Simulation and Design of a Waveform Generator Based on DDS Technology
|
|
- Aileen Lawrence
- 6 years ago
- Views:
Transcription
1 Simulation and Design of a Waveform Generator Based on DDS Technology Qun Sun 1*, Zhenmin Ge 1, Chao Li 2, Linlin Chen 1, Chong Wang 1 1 School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng ,China 2 College of Mechanical Engineering and Applied Electronics Technology Beijing University of Technology, Beijing * Corresponding author: sunxiaoqun97@163.com Abstract - Waveform generators employed in college laboratories are often purchased instruments with ultra precision, which may cause unnecessary expenditure since the prices are often high whilst some functionalities are not required. By analyzing the principle of existing products, a simple waveform generator based on DDS (direct digital synthesis) technology has been developed using AT89S52 single chip microcomputer combined with DDS chip AD9851, which can produce square wave, sine wave and triangular wave signals. While meeting the requirements of college laboratories, surplus functionalities were avoided to limit the cost. In addition to advantages such as small size, simple structure and easy operation, experiments showed that the generated waveforms are of high precision. Keywords - DDS technology, wave generator, AT89S52 microcomputer I. INTRODUCTION Waveform generators are widely used in scientific research, engineering education and production practice. Square waves and sine waves are extensively utilized signals, often as the standard signals in electronic circuit performance test or parameter measurement [1-3]. In addition, many testing instruments also need standard sine wave and square wave signals to detect some physical quantities. The Direct Digital Synthesis (DDS) technology has been dramatically developed in recent years for several advantages such as very high resolution, continuous phase of frequency conversion, easy synthesis and convenient extension [4-8]. Waveform generators in many laboratories at present are mainly purchased instruments with ultra precision and high costs, which could cause waste of resources since not all the functionalities can be fully utilized[9-15]. For the above reason, a simplified waveform generator has been developed using single chip microcomputer combined with integration of DDS chip to achieve high precision, small volume, simple structure and easy operation. It can produce square wave, sine wave and triangle wave to meet the requirements of laboratories in colleges and universities, whilst other functionalities not commonly used are removed to limit the cost. II. THE OVERALL DESIGN OF WAVE GENERATOR A. System Design Requirement and Module Construction The requirements of system design are to achieve the basic functions of a waveform generator, i.e., ready to configure the output signal waveform types, numerically control output signal amplitude and frequency, ensure the output frequency to reach as high as 6 MHz, operate through the keyboard and display frequency and amplitude etc. The block diagram of the system construction is shown in Figure 1, including a human-computer interface module, a micro-computer controller module, a signal generating module and a signal processing module. The signal processing module includes operational amplifier circuit and filter circuit. Figure 1. The block diagram of wave generator The frequency values are typed through a keyboard and sent to the micro-computer control unit to judge whether it is beyond the frequency range. If it is within the scope, then the frequency control code is generated and sent parallel to the DDS chip, which synthesizes the frequencies required by the users and produces sine wave and square wave signals, and shows on the LCD display through programming. The waveform signals are processed through filter and operational amplifier circuits, and the amplitudes can be adjusted by a slide rheostat. DOI /IJSSST.a ISSN: x online, print
2 B. Selection of System Main Components The human-machine interface module consists of a keyboard and LCD1602 display. The controller module is based on an AT89S52 single chip microcomputer that controls other modules, and the signal generating module is an AD9851 chip that produces the signal. The signal processing module is a LM224 amplifier that processes signals after these are produced. In the -12V voltage generating circuit, a 10uF bypass capacitor was added between pin CAP+ and pin CAP- to avoid pressure drop attenuation, and a 10uF capacitor was added to pin VOUT to introduce filter effect. This circuit is a voltage inversion circuit, which outputs -12V voltage through the stabilized +12V input voltage, as shown in Figure 4. III. HARDWARE DESIGN OF THE WAVE GENERATOR A. The Design of stabilized Voltage Supply The power supply module provides voltage to the whole circuit so that the voltage source condition determines the performance of the circuit to a great extent. This design employs three voltage source types including +5V and ±12V. It would be very inconvenient if all the required voltages are external inputs, therefore a single +12V input voltage was chosen as the power supply and the other two voltages were obtained from conversion of +12V. The single chip microcomputer in the control module needs +5V voltage power supply, which can be obtained from a three-terminal voltage regulator LM7805. The signal processing module LM224 needs ±12V power supply, where +12V voltage can be obtained directly, and the -12V voltage is obtained by CMOS voltage converter ICL7662CPA. The principle of the power unit is shown in Figure 2. Figure 4. The circuit of generating -12V voltage. B. Design of the Signal Generating Module Signal generation is made through an AT89S52 single chip microcomputer and a DDS chip AD9851. Users send the frequency values through keyboard to the single chip microcomputer (SCM), where the frequency values can be processed into control word, and finally the control word is sent to the DDS chip that can generate frequency controllable waveform signals. The circuit scheme of AT89S52 and AD9851 is shown in Figure 5. Figure 2. The principle of stabilized voltage supply The 12V input produces +5V voltage after a filtering circuit and the voltage regulator 7805 circuit. It needs to use a 100uF capacitor and a 0.1uF capacitor before power supply voltage input for the purpose of filtering, and to add a 100uF capacitor and a 0.1uF capacitor at the voltage output for the purpose of filtering and damping. A light emitting diode is connected at the end of the output and cascaded with a 1kΩ resistance to indicate the voltage. The 5V voltage regulator circuit is shown in Figure V U1 VCC 1 V V 2 IN OUT GND C3 Cap 0.1uF 3 C4 78L05 Cap Pol2 100uF GND C7 Cap 0.1uF C8 Cap Pol2 100uF Figure 3. +5V voltage regulator circuit R2 Res2 1K D1 LED0 Figure 5. The circuit scheme of AT89S52 and AD9851. C. Design of the Controller Module AT89S52 MCU is advantageous in its low power consumption and has 8k internal storage capacity. The XTAL1 and XTAL2 pins of the MCU are connected to a 12M crystal oscillator and 30pF capacitors before grounding. The clock circuit can be set up as shown in Figure 6. DOI /IJSSST.a ISSN: x online, print
3 The square wave amplifier circuit adopts inverting input and the in-phase input was grounded. The input signal connects with a 5kΩ resistor and then to the inverting input terminal, while a 10kΩ slide rheostat was linked between inverting input end and the output end. The amplification factor ranges from 0 to 2 and the square wave amplifier circuit is shown in Figure 9. Figure 6. The clock circuit The RST pin connects to a switch button and VCC, with a 10uF capacitor in parallel connection, grounded via a 10K resistor. This constitutes a reset circuit as shown in Figure 7. Figure 9. The square amplifier circuit Figure 7. The reset circuit D. Design of the Human-Machine Interface Module LCD1602 with 2 16 characters, internal font,and adjustable character brightness is chosen as LCD display module. The 8-line data cables of the LCD module are connected to the microcontroller Port 0, while pin RS, pin RW, pin E respectively link to P3.5, P3.6 and P3.7 of the MCU, with a slide rheostat used to adjust the brightness of the display. The LCD interface circuit is shown in Figure 8. The sine wave amplifier circuit adopts inverting input and the in-phase input was grounded. The input signal connects with a 5kΩ resistor and then to the inverting input terminal, while a 10kΩ slide rheostat was linked between inverting input end and the output end. The amplification factor ranges from 0 to 10 and the sine wave amplifier circuit is shown in Figure 10. Figure 10. The sinusoidal amplifier circuit Compared with the inverting circuit, a 0.1uF capacitor was used to replace the resistor as the feedback element, so as to construct an integral arithmetic circuit. Its role is to convert square wave signals into triangle wave signals, as shown in Figure 11. Figure 8. The LCD interface circuit. E. The Design of Signal Processing Module Op-Amp LM224 was chosen within amplifying circuit and integral circuit for signal processing, and the amplitude was adjusted by a slide rheostat. Figure 11. The circuit of generating triangular wave DOI /IJSSST.a ISSN: x online, print
4 The triangle wave amplifier circuit adopts inverting input and the in-phase input was grounded. The input signal connects with a 1kΩ resistor and then to the inverting input terminal, while a 10kΩ slide rheostat was linked between inverting input end and the output end. The amplification factor ranges from 0 to 10 and the square wave amplifier circuit is shown in Figure 12. modes are detected, the program moves into different subfunctions. Figure 12. The triangular amplifier circuit F. The Anti-Interference Design The anti-interference circuit adopts an elliptic filter as shown in Figure 13. Since this signal generator is a hybridsystem of digital and analogue circuits with very high operating frequency, much attention should be paid to the PCB anti-interference design. The PCB separates the layer out and wiring of digital circuit and analogue circuit, while the digital signal ground and analogue signal ground are separated but grounded at one point. The crystal oscillator is close to the pins of the DDS chip. The wires of the crystal oscillator and the power supply were thickened. Figure 13. The filtering circuit IV. THE SOFTWARE DESIGN OF WAVE GENERATOR A. The Main Program Design The software is based on the idea of structured and modular design, and the flow diagram is shown in Figure 14. The initialization program mainly writes in several special function registers, and sets the working modes and initial values of each module. If the reset source is watchdog or the clock looses detector, the latest working condition will be restored. The keyboard scanning is controlled by the T0 timer, and after different waveform Figure 14. The main program flow chart B. The design of DDS Controller The DDS control flow chart is shown in Figure 15. Programming the DDS chip will make the DDS chip produce square wave or sine wave signals that are of the corresponding frequencies. The D/A output voltage of MCU can be adjusted according to the input amplitude, so as to control the amplitude of the square wave and sine wave, and store the frequency and amplitude values into MCU internal flash to avoid losing data. If the reset source is watchdog or the clock looses detector, the frequency and amplitude values saved in the last working cycle is restored. DOI /IJSSST.a ISSN: x online, print
5 Start Input the Frequency The requency is beyond the scope? No Convert the frequency into control word Send control word, writing enabled End Yes conditions. The oscilloscope is a selected DS1102E digital oscilloscope. Statistical method has been used for the sampling test, mainly to see whether or not a waveform has distortion. The data collection procedures of three waveforms are the same. Firstly, the frequency is fixed at 1Hz to detect the waveform ranging from 1V to 10V using 1V step. Then the frequency is fixed at 10Hz to detect the waveform ranging from 1V to 10V using 1V step. The tests are carried on using this method by gradually increasing the frequency. A. The Square Waveform Testing In order to make waveform more accurate, some improvements to the original amplifier circuit has been made by adding a voltage comparator to the circuit. UR is the reference voltage added to the in-phase input end and the input voltage U1 is added to the inverting input end. The operational amplifier works in an open loop condition. Because of high voltage in open-loop amplification and a tiny difference can lead to output saturation voltage, an ideal square wave only exists in a saturated zone. The actual square wave experiment is shown in Figure 16. Figure 15. The DDS flow gram C. The key Scanning Program The keyboard is firstly initialized and anti-shake program is added to prevent detection error during key scanning. If key 1 is pressed, the LCD cursor moves to the right. Pressing key 2 increases the frequency value, and pressing key 3 reduces the frequency value. If key 4 is pressed, the microcontroller will reset and the program will restart. D. The LCD display The display module is a LCD1602 panel that can display two lines and each line can display 16 characters. Firstly initialize LCD1602 and then set the position of the first line and display the contents of the first line. In order to ensure that the control command can be received completely, time delay is added in the program. The second line is configured after completion of the first line of data transmission, using the same approach as for the first line. V. EXPERIMENTAL ANALYSIS AND IMPROVEMENT OF THE WAVE GENERATOR Figure 16. The measured drawing of square wave B. The Sinusoidal Waveform Testing The sinusoidal wave is output directly by the AD9851, by adjusting the slide rheostat to adjust the amplitude. For sinusoidal wave with any arbitrary frequency and amplitude, the test found that the waveform is ideal. The actual experiment of sinusoidal wave is shown in Figure 17. Because this design is for laboratory in colleges and universities, therefore there are not very strict requirements for environmental conditions. The scope of the room temperature ranging from 10 to 35 have been provided, and relative humidity is no more than 80% under the testing DOI /IJSSST.a ISSN: x online, print
6 Figure 17. The measured drawing of sinusoidal wave. C. The Triangular Waveform Testing Triangle wave generating circuit is actually an integral circuit, which is integral of the square wave output of AD9850, resulting in a triangle wave. Because the triangular wave is obtained by square wave, the quality of the square wave directly affects the quality of the triangular wave. Therefore, in order to get ideal triangle wave, it is essential to firstly ensure the quality of the square wave. The actual experiment of triangular wave is shown in Figure 18. (A)Before improvement;(b)after improvement;(c)frequency control word Figure 19.The experimental data of frequency testing E. The Improvement of System Amplitude-Frequency Characteristics Before nonlinear compensation, the D/A output voltage is linear and its input amplitude is fixed at 306mV. The system amplitude-frequency characteristics are those characteristics of the operational amplifiers. The amplitudefrequency characteristic curve is shown in Figure 20, where the signal attenuation is 0dB within the low frequency band and the actual output amplitude is consistent with the configured range. When the frequency is 80 khz, the amplitude begins to decay, the higher the frequency the greater the decay. The amplification factor decreases when the input signal frequency is increased. Figure 18. The measured drawing of triangular wave. D. Improvement of the System Frequency Performance Frequency synthesis adopts a ROM look-up table. From the perspective of the application, the frequency control word determines the output frequency and sampling points, which can either increase the frequency decreasing the sampling points, or decrease the frequency and increase sampling points. Due to variations of output frequency, the output waveform signal distortion also changes, as shown in Figure 19. Figure 20. The comparison of the amplitude-frequency characteristics of before and after non-linear compensation. DOI /IJSSST.a ISSN: x online, print
7 Figure 21. The developed waveform generator. VI. CONCLUSION The lost cost waveform generator has been developed with several advantages such as high precision, small size, simple structure and easy operation. It can produce square wave, sine wave and triangle wave signals to satisfy the requirements of laboratories in colleges and universities. At the same time, some rarely used functions have been removed to reduce costs. Under the control of the MCU, waveform signals with adjustable frequency and amplitude can be directly synthetized by the DDS device. According to the sampling theorem, the frequency of the output sine signal can reach 6MHz when the DDS chip uses a 125MHz reference clock. However due to restrictions of the operational amplifier, the waveform quality becomes poor when the output frequency increases to 10MHz. [6] Yifan TAO. Design of a Signal Generator Based on AD9854[J]. Control & Automation, 2006(02Z): [7] Guoguang ZHANG. Research of DDS-based high-precision multichannel signal generation system[j]. Electronic Measurement Technology,2014,37(4): [8] Qun SUN, Qing SONG. Portable signal generator based on direct digital synthesis[j]. Instrument Technique and sensor.2009,4(4): [9] Jianqing LIAO. Design of Phase Adjustable Signal Generator Based on DDS[J].Journal of Luoyang Normal University, 2014,33(2): [10] Zhengjiao CAO. Design of DDS Signal Generator Based on FPGA[J].Computer Measurement & Control, 2011,19(12): ,3186. [11] Yingying SUN, Jingyang LU, Sijiu LIU, Hongqi BEN. Design of sinusoidal signal generator based on AD9833 and potentiometer[j].electrical Measurement & Instrumentation, 2012,7: [12] Dawei YANG, Xiufang YANG, Jianghong CHEN. Design and implementation of direct digital frequency synthesis [13] Chuansheng ZHANG. Visualization Versatile Waveform-generator Based on S3C2440 [J].Chinese Journal of Liquid Crystals and Displays, 2014, 29(6): [14] Shou.Y.Z, Zhang.H, Ge.Y.H. Design and Implementation of DDS Signal Generator Based on FPGA[J]. Journal of Jimei University (Natural Science), 2014, 19(5): [15] ZHANG Genxuan,WU Zihuai. Design of Signal Generator Based on AT89S52 Microcontroller[J]. Journal of Hunan Institute of Engineering, 2010, 20(3): ACKNOWLEDGEMENT This project is founded by Shandong Province special funding to upgrade technology research of large scientific instruments (ID: 2013SJGZ26) and national college students innovation and National Training Programs of Innovation and Entrepreneurship for Undergraduates (ID: ). REFERENCES [1] Xiaoling XIA. The design of waveform generator based on FPGA and MCU[J]. Electronic Technology & Software Engineering. 2015, 06:141. [2] Haibo WANG, Weitao REN, Xu LIU. Simulative HPM Pulse Generation Based on Arbitrary Waveform Generator[J]. Modern Applied Physics, 2015,01: [3] Shuming LAI, Zhuoxin YANG, Lijuan ZHANG. A new type of digital development of high frequency signal generator[j]. Digital Technology and Application, 2015, 02: [4] Kaiyan LI. Multi-functional signal generator[j]. Journal of Tianjin University of Commerce, 2006,26(3): [5] Wenting LI, Shaobo LIU, Zhaozhi LONG. Calculated performance analysis of impulse measurement software[j]. Electrical Measurement & Instrumentation, 2015,01: DOI /IJSSST.a ISSN: x online, print
Design and Implementation of a New Gain Control RF Amplifier
2016 3 rd International Conference on Materials Science and Mechanical Engineering (ICMSME 2016) ISBN: 978-1-60595-391-5 Design and Implementation of a New Gain Control RF Amplifier Qingtian Wang, Yu Yan
More informationDesign of Frequency Characteristic Test Instrument Based on USB
Design of Frequency Characteristic Test Instrument Based on USB Zhengling Wu, Nannan Zhang College of information and control engineering, Jilin Institute of Chemical Technology, Jilin, Jilin, P.R. China.
More informationSchool of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, , China
4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 2015) A design and implementation of Pulse-Measure instrument based on Microcontroller Zhu Siqing1,
More informationDesign and Fabrication of High Frequency Linear Function Generator with Digital Frequency Counter using MAX038 and a PIC microcontroller
International Journal of Latest Tr ends in Engineering and Technology Vol.(7)Issue(3), pp. 263-270 DOI: http://dx.doi.org/10.21172/1.73.536 e-issn:2278-621x Design and Fabrication of High Frequency Linear
More informationSTM32 microcontroller core ECG acquisition Conditioning System. LIU Jia-ming, LI Zhi
International Conference on Computer and Information Technology Application (ICCITA 2016) STM32 microcontroller core ECG acquisition Conditioning System LIU Jia-ming, LI Zhi College of electronic information,
More informationDesign of Low-Cost Multi- Waveforms Signal Generator Using Operational Amplifier
Ali S. Aziz Al-Hussain University College, Karbala Province, IRAQ aliaziz@huciraq.edu.iq Design of Low-Cost Multi- Waveforms Signal Generator Using Operational Amplifier Function signal generator has a
More informationDesign and Research of Piezoelectric Ceramics Drive Power
Sensors & Transducers 204 by IFSA Publishing, S. L. http://www.sensorsportal.com Design and Research of Piezoelectric Ceramics Drive Power Guang Ya LIU, Guang Yu XU Electronic Engineering, Hubei University
More informationSTUDY OF A NEW PHASE DETECTOR BASED ON CMOS
STUDY OF A NEW PHASE DETECTOR BASED ON CMOS 1 CHEN SHUYUE, 2 WANG NU 1 Prof., School of Information Science and Engineering, Changzhou University, Changzhou213164,P.R.China 2 Graduate Student, School of
More informationThe Application and Stimulation Research of PIC single chip in. waveform signal generator. Gao Yi
Advanced Materials Research Online: 2013-05-14 ISSN: 1662-8985, Vols. 694-697, pp 1446-1449 doi:10.4028/www.scientific.net/amr.694-697.1446 2013 Trans Tech Publications, Switzerland The Application and
More informationLow Cost Screening Audiometer
Abstract EE 389 EDL Report, EE Dept. IIT Bombay, submitted on Nov.2004 Low Cost Screening Audiometer Group No.: D3 Chirag Jain 01d07018 Prashant Yadav 01d07024 Puneet Parakh 01d07007 Supervisor: Prof.
More informationDesign of double loop-locked system for brush-less DC motor based on DSP
International Conference on Advanced Electronic Science and Technology (AEST 2016) Design of double loop-locked system for brush-less DC motor based on DSP Yunhong Zheng 1, a 2, Ziqiang Hua and Li Ma 3
More informationDesign of high precision current signal source on DDS Han Ya Kun1, a, Suo Xue Song*,1, b
4th National Conference on Electrical, Electronics and Computer Engineering (NCEECE 2015) Design of high precision current signal source on DDS Han Ya Kun1, a, Suo Xue Song*,1, b 1 Agricultural University
More informationDesign of Adaptive RFID Reader based on DDS and RC522 Li Yang, Dong Zhi-Hong, Cong Dong-Sheng
International Conference on Applied Science and Engineering Innovation (ASEI 2015) Design of Adaptive RFID Reader based on DDS and RC522 Li Yang, Dong Zhi-Hong, Cong Dong-Sheng Beijing Key Laboratory of
More informationDesign of Virtual Sphygmomanometer Based on LABVIEWComparison, Reflection, Biological assets, Accounting standard.
Design of Virtual Sphygmomanometer Based on LABVIEWComparison, Reflection, Biological assets, Accounting standard. Li Su a, Boxin Zhang b School of electronic engineering, Xi'an Aeronautical University,
More informationEE 368 Electronics Lab. Experiment 10 Operational Amplifier Applications (2)
EE 368 Electronics Lab Experiment 10 Operational Amplifier Applications (2) 1 Experiment 10 Operational Amplifier Applications (2) Objectives To gain experience with Operational Amplifier (Op-Amp). To
More informationImprovement of Ultrasonic Distance Measuring System
Improvement of Ultrasonic Distance Measuring System Yu Jiang 1, Rui Song 2,*, and Mingting Yuan 3 1 Qingdao University, College of automation and electrical engineering, 266071 Qingdao and Shangdong University,College
More informationIntro To Engineering II for ECE: Lab 7 The Op Amp Erin Webster and Dr. Jay Weitzen, c 2014 All rights reserved.
Lab 7: The Op Amp Laboratory Objectives: 1) To introduce the operational amplifier or Op Amp 2) To learn the non-inverting mode 3) To learn the inverting mode 4) To learn the differential mode Before You
More informationDesign and Implementation of Digital Frequency Meter Based on SCM. Weiqiang Zheng
Applied Mechanics and Materials Submitted: 2014-09-28 ISS: 1662-7482, Vols. 687-691, pp 3466-3469 Accepted: 2014-09-28 doi:10.4028/www.scientific.net/amm.687-691.3466 Online: 2014-11-27 2014 Trans Tech
More informationECE3204 D2015 Lab 1. See suggested breadboard configuration on following page!
ECE3204 D2015 Lab 1 The Operational Amplifier: Inverting and Non-inverting Gain Configurations Gain-Bandwidth Product Relationship Frequency Response Limitation Transfer Function Measurement DC Errors
More informationExperiment No. 4 The LM 741 Operational Amplifier
Experiment No. 4 The LM 741 Operational Amplifier By: Prof. Gabriel M. Rebeiz The University of Michigan EECS Dept. Ann Arbor, Michigan The LM * 741 is the most widely used op-amp in the world due to its
More informationPURPOSE: NOTE: Be sure to record ALL results in your laboratory notebook.
EE4902 Lab 9 CMOS OP-AMP PURPOSE: The purpose of this lab is to measure the closed-loop performance of an op-amp designed from individual MOSFETs. This op-amp, shown in Fig. 9-1, combines all of the major
More information6. HARDWARE PROTOTYPE AND EXPERIMENTAL RESULTS
6. HARDWARE PROTOTYPE AND EXPERIMENTAL RESULTS Laboratory based hardware prototype is developed for the z-source inverter based conversion set up in line with control system designed, simulated and discussed
More information11. Audio Amp. LM386 Low Power Amplifier:
EECE208 INTRO TO EE LAB Dr. Charles Kim 11. Audio Amp Objectives: The main purpose of this laboratory exercise is to design an audio amplifier based on the LM386 Low Voltage Audio Power Amplifier chip
More informationThe Application of EDA Technology in the Teaching of Communication Circuits
doi: 10.14355/jitae.2014.0304.03 The Application of EDA Technology in the Teaching of Communication Circuits Jianfang YE 1, Jianwei YE* 2, Jiale TU 2 1 College of Information Science and Technology, Donghua
More informationEE-110 Introduction to Engineering & Laboratory Experience Saeid Rahimi, Ph.D. Lab Timer: Blinking LED Lights and Pulse Generator
EE-110 Introduction to Engineering & Laboratory Experience Saeid Rahimi, Ph.D. Lab 9 555 Timer: Blinking LED Lights and Pulse Generator In many digital and analog circuits it is necessary to create a clock
More informationDesign of the circuit for FSK modulation based on AD9910. Yongjun 1,2
Applied Mechanics and Materials Online: 2011-06-10 ISSN: 1662-7482, Vols. 58-60, pp 2664-2669 doi:10.4028/www.scientific.net/amm.58-60.2664 2011 Trans Tech Publications, Switzerland Design of the circuit
More informationApplication of CPLD in Pulse Power for EDM
Application of CPLD in Pulse Power for EDM Yang Yang and Yanqing Zhao School of Mechanical and Electronical Engineering, East China Jiaotong University, Nanchang 330013, China zyq19851202@yahoo.com.cn
More informationScreening Audiometer
EE89 Electronic Design Lab (EDL) Report, EE Dept, IIT Bombay, December, 00 Screening Audiometer Group No. D0 Mahim Agrawal (0D000) < mahim@ee.iitb.ac.in > Ashok Kumar Bhardwaj (0D00) < ashokkb@ee.iitb.ac.in
More informationDesign of High Precision Digital AC Constant Current Source
dvances in Engineering Research, volume 0 International Forum on Energy, Environment Science and Materials (IFEESM 0) Design of High Precision Digital C Constant Current Source LIU Hongzheng, a, YUN Haiyan,
More informationA High Precision Electronic Scale Based on STM32. Jiahui Chen
2nd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2017) A High Precision Electronic Scale Based on STM32 Jiahui Chen Department of Electronic and Communication
More informationDesign of Linear Sweep Source Based on DDS Used in Readout System for Wireless Passive Pressure Sensor
PHOTONIC SENSORS / Vol. 4, No. 4, 2014: 359 365 Design of Linear Sweep Source Based on DDS Used in Readout System for Wireless Passive Pressure Sensor Yingping HONG 1,2, Tingli ZHENG 1,2, Ting LIANG 1,2,
More informationUNIVERSITI MALAYSIA PERLIS
UNIVERSITI MALAYSIA PERLIS ANALOG ELECTRONICS II EMT 212 2009/2010 EXPERIMENT # 3 OP-AMP (OSCILLATORS) 1 1. OBJECTIVE: 1.1 To demonstrate the Wien bridge oscillator 1.2 To demonstrate the RC phase-shift
More informationOperational Amplifiers
Questions Easy Operational Amplifiers 1. Which of the following statements are true? a. An op-amp has two inputs and three outputs b. An op-amp has one input and two outputs c. An op-amp has two inputs
More informationSimulation of small signal resonant amplifier based on Multisim Dan Ren
Simulation of small signal resonant amplifier based on Multisim Dan Ren College of engineering and technology, Eastern Liaoning University, Dandong Liaoning 118000, China ldxyrendan@163.com Abstract. In
More informationDesign of Signal Conditioning Circuit for Photoelectric Sensor. , Zhennan Zhang
7th International Conference on Education, Management, Computer and Medicine (EMCM 2016) Design of Signal Conditioning Circuit for Photoelectric Sensor 1, a* Nan Xie 2, b, Zhennan Zhang 2, c and Weimin
More informationDEPARTMENT OF ELECTRICAL ENGINEERING LAB WORK EE301 ELECTRONIC CIRCUITS
DEPARTMENT OF ELECTRICAL ENGINEERING LAB WORK EE301 ELECTRONIC CIRCUITS EXPERIMENT : 5 TITLE : ACTIVE FILTERS OUTCOME : Upon completion of this unit, the student should be able to: 1. gain experience with
More informationEE 3305 Lab I Revised July 18, 2003
Operational Amplifiers Operational amplifiers are high-gain amplifiers with a similar general description typified by the most famous example, the LM741. The LM741 is used for many amplifier varieties
More informationUNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering
UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering EXPERIMENT 5 GAIN-BANDWIDTH PRODUCT AND SLEW RATE OBJECTIVES In this experiment the student will explore two
More informationDesign of intelligent vehicle control system based on machine visual
Advances in Engineering Research (AER), volume 117 2nd Annual International Conference on Electronics, Electrical Engineering and Information Science (EEEIS 2016) Design of intelligent vehicle control
More informationENGN Analogue Electronics Digital PC Oscilloscope
Faculty of Engineering and Information Technology Department of Engineering ENGN3227 - Analogue Electronics Digital PC Oscilloscope David Dries u2543318 Craig Gibbons u2543813 James Moran u4114563 Ranmadhu
More informationElectronic PRINCIPLES
MALVINO & BATES Electronic PRINCIPLES SEVENTH EDITION Chapter 22 Nonlinear Op-Amp Circuits Topics Covered in Chapter 22 Comparators with zero reference Comparators with non-zero references Comparators
More informationCapacitive Touch Sensing Tone Generator. Corey Cleveland and Eric Ponce
Capacitive Touch Sensing Tone Generator Corey Cleveland and Eric Ponce Table of Contents Introduction Capacitive Sensing Overview Reference Oscillator Capacitive Grid Phase Detector Signal Transformer
More informationLINEAR IC APPLICATIONS
1 B.Tech III Year I Semester (R09) Regular & Supplementary Examinations December/January 2013/14 1 (a) Why is R e in an emitter-coupled differential amplifier replaced by a constant current source? (b)
More informationCENG4480 Embedded System Development and Applications The Chinese University of Hong Kong Laboratory 1: Op Amp (I)
CENG4480 Embedded System Development and Applications The Chinese University of Hong Kong Laboratory 1: Op Amp (I) Student ID: 2018 Fall 1 Introduction This lab session introduces some very basic concepts
More informationSpectrum analyzer for frequency bands of 8-12, and MHz
EE389 Electronic Design Lab Project Report, EE Dept, IIT Bombay, November 2006 Spectrum analyzer for frequency bands of 8-12, 12-16 and 16-20 MHz Group No. D-13 Paras Choudhary (03d07012)
More informationHAMEG Programmable Measuring Instruments Series 8100
HAMEG Programmable Measuring Instruments Series 8100 HAMEG Programmable Measuring Instruments Series 8100 are ideally suited for test installations in production and automated tests in laboratories. They
More informationPHYS 536 The Golden Rules of Op Amps. Characteristics of an Ideal Op Amp
PHYS 536 The Golden Rules of Op Amps Introduction The purpose of this experiment is to illustrate the golden rules of negative feedback for a variety of circuits. These concepts permit you to create and
More informationDEPARTMENT OF ELECTRICAL ENGINEERING LAB WORK EE301 ELECTRONIC CIRCUITS
DEPARTMENT OF ELECTRICAL ENGINEERING LAB WORK EE301 ELECTRONIC CIRCUITS EXPERIMENT : 4 TITLE : 555 TIMERS OUTCOME : Upon completion of this unit, the student should be able to: 1. gain experience with
More informationDesign and Implementation of Digital Signal Transmission Performance Analyzer Based on FPGA
Research Journal of Applied Sciences, Engineering and Technology 5(6): 1991-1997, 2013 ISSN: 2040-7459; e-issn: 2040-7467 Maxwell Scientific Organization, 2013 Submitted: July 12, 2012 Accepted: September
More informationECEN Network Analysis Section 3. Laboratory Manual
ECEN 3714----Network Analysis Section 3 Laboratory Manual LAB 07: Active Low Pass Filter Oklahoma State University School of Electrical and Computer Engineering. Section 3 Laboratory manual - 1 - Spring
More informationSeparately Excited DC Motor for Electric Vehicle Controller Design Yulan Qi
6th International Conference on Sensor etwork and Computer Engineering (ICSCE 2016) Separately Excited DC Motor for Electric Vehicle Controller Design ulan Qi Wuhan Textile University, Wuhan, China Keywords:
More informationAbout the Tutorial. Audience. Prerequisites. Copyright & Disclaimer. Linear Integrated Circuits Applications
About the Tutorial Linear Integrated Circuits are solid state analog devices that can operate over a continuous range of input signals. Theoretically, they are characterized by an infinite number of operating
More informationFrequency Synthesizer Project ECE145B Winter 2011
Frequency Synthesizer Project ECE145B Winter 2011 The goal of this last project is to develop a frequency synthesized local oscillator using your VCO from Lab 2. The VCO will be locked to a stable crystal
More informationSummer 2015 Examination
Summer 2015 Examination Subject Code: 17445 Model Answer Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as given in the model answer scheme.
More informationWe are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists. International authors and editors
We are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists 3,500 108,000 1.7 M Open access books available International authors and editors Downloads Our
More informationDesign of a AC current source for inductive loads. Kuihong Hao Bin Li
Applied Mechanics and Materials Online: 2013-12-09 ISSN: 1662-7482, Vols. 475-476, pp 1638-1642 doi:10.4028/www.scientific.net/amm.475-476.1638 2014 Trans Tech Publications, Switzerland Design of a AC
More informationChapter 2 Signal Conditioning, Propagation, and Conversion
09/0 PHY 4330 Instrumentation I Chapter Signal Conditioning, Propagation, and Conversion. Amplification (Review of Op-amps) Reference: D. A. Bell, Operational Amplifiers Applications, Troubleshooting,
More informationLaboratory 6. Lab 6. Operational Amplifier Circuits. Required Components: op amp 2 1k resistor 4 10k resistors 1 100k resistor 1 0.
Laboratory 6 Operational Amplifier Circuits Required Components: 1 741 op amp 2 1k resistor 4 10k resistors 1 100k resistor 1 0.1 F capacitor 6.1 Objectives The operational amplifier is one of the most
More informationThe Theory and Implementation of Gain Test for Operational Amplifiers
0 International Conference on Computer Science and Information Technology (ICCSIT 0) IPCSIT vol. (0) (0) IACSIT Press, Singapore DOI: 0./IPCSIT.0..4 The Theory and Implementation of Gain Test for Operational
More informationLab 10: Oscillators (version 1.1)
Lab 10: Oscillators (version 1.1) WARNING: Use electrical test equipment with care! Always double-check connections before applying power. Look for short circuits, which can quickly destroy expensive equipment.
More information9 Feedback and Control
9 Feedback and Control Due date: Tuesday, October 20 (midnight) Reading: none An important application of analog electronics, particularly in physics research, is the servomechanical control system. Here
More informationFigure 1: Closed Loop System
SIGNAL GENERATORS 3. Introduction Signal sources have a variety of applications including checking stage gain, frequency response, and alignment in receivers and in a wide range of other electronics equipment.
More informationDev Bhoomi Institute Of Technology Department of Electronics and Communication Engineering PRACTICAL INSTRUCTION SHEET REV. NO. : REV.
Dev Bhoomi Institute Of Technology Department of Electronics and Communication Engineering PRACTICAL INSTRUCTION SHEET LABORATORY MANUAL EXPERIMENT NO. ISSUE NO. : ISSUE DATE: July 200 REV. NO. : REV.
More informationChapter 9: Operational Amplifiers
Chapter 9: Operational Amplifiers The Operational Amplifier (or op-amp) is the ideal, simple amplifier. It is an integrated circuit (IC). An IC contains many discrete components (resistors, capacitors,
More informationHART Modem DS8500. Features
Rev 1; 2/09 EVALUATION KIT AVAILABLE General Description The is a single-chip modem with Highway Addressable Remote Transducer (HART) capabilities and satisfies the HART physical layer requirements. The
More informationA Digital Thyristor Trigger Control System based on DSP
A Digital Thyristor Trigger Control System based on DSP Zhen Guo a, Jun Liu b, Shunxing Hu c, Yuyang Li d Department of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068,
More informationThe Hardware Design of Power Quality Online Monitoring Device Based. on MCU
5th International Conference on Advanced Design and Manufacturing Engineering (ICADME 05) The Hardware Design of Power Quality Online Monitoring Device Based on MCU Zheng Jiang,a*, Longguang Kong,b, Yang
More informationUAV Automatic Test System Design based on VXI-Bus
International Conference on Electromechanical Control Technology and Transportation (ICECTT 2015) UAV Automatic Test System Design based on VXI-Bus Dingwen Peng1,2, a, Wenling Huang2,b 1 Dept. of Weapon
More informationTHE DESIGN OF ENERGY-EFFICIENT MONITORING TERMINALFOR POWER SUPPLY AND DISTRIBUTION SYSTEM OF ENTERPRISE BASED ON STM32
THE DESIGN F ENERGY-EFFICIENT MNITRING TERMINALFR PWER SUPPLY AND DISTRIBUTIN SYSTEM F ENTERPRISE BASED N STM32 1 XIA HAIHNG, 2 CHEN TA 1 Assoc Prof., School of Electrical information Engineering, Henan
More informationUsed in Image Acquisition Area CCD Driving Circuit Design
Used in Image Acquisition Area CCD Driving Circuit Design Yanyan Liu Institute of Electronic and Information Engineering Changchun University of Science and Technology Room 318, BLD 1, No.7089, Weixing
More informationI. INTRODUCTION II. LITERATURE REVIEW
ABSTRACT 2018 IJSRSET Volume 4 Issue 4 Print ISSN: 2395-1990 Online ISSN : 2394-4099 Themed Section : Engineering and Technology Reactive Power Compensation in Distribution System Piyush Upadhyay, Praveen
More informationGOVERNMENT OF KARNATAKA KARNATAKA STATE PRE-UNIVERSITY EDUCATION EXAMINATION BOARD II YEAR PUC EXAMINATION MARCH-2013 SCHEME OF VALUATION
GOVERNMENT OF KARNATAKA KARNATAKA STATE PRE-UNIVERSITY EDUCATION EXAMINATION BOARD II YEAR PUC EXAMINATION MARCH-03 SCHEME OF VALUATION Subject Code: 0 Subject: PART - A 0. What does the arrow mark indicate
More informationSpeed Control of DC Motor Using Phase-Locked Loop
Speed Control of DC Motor Using Phase-Locked Loop Authors Shaunak Vyas Darshit Shah Affiliations B.Tech. Electrical, Nirma University, Ahmedabad E-mail shaunak_vyas1@yahoo.co.in darshit_shah1@yahoo.co.in
More informationVCC. Digital 16 Frequency Divider Digital-to-Analog Converter Butterworth Active Filter Sample-and-Hold Amplifier (part 2) Last Update: 03/19/14
Digital 16 Frequency Divider Digital-to-Analog Converter Butterworth Active Filter Sample-and-Hold Amplifier (part 2) ECE3204 Lab 5 Objective The purpose of this lab is to design and test an active Butterworth
More informationECE159H1S University of Toronto 2014 EXPERIMENT #2 OP AMP CIRCUITS AND WAVEFORMS ECE159H1S
ECE159H1S University of Toronto 2014 EXPERIMENT #2 OP AMP CIRCUITS AND WAVEFORMS ECE159H1S OBJECTIVES: To study the performance and limitations of basic op-amp circuits: the inverting and noninverting
More informationEE 330 Laboratory 8 Discrete Semiconductor Amplifiers
EE 330 Laboratory 8 Discrete Semiconductor Amplifiers Fall 2018 Contents Objective:...2 Discussion:...2 Components Needed:...2 Part 1 Voltage Controlled Amplifier...2 Part 2 A Nonlinear Application...3
More informationmultiplier input Env. Det. LPF Y (Vertical) VCO X (Horizontal)
Spectrum Analyzer Objective: The aim of this project is to realize a spectrum analyzer using analog circuits and a CRT oscilloscope. This interface circuit will enable to use oscilloscopes as spectrum
More informationCHAPTER 4 MULTI-LEVEL INVERTER BASED DVR SYSTEM
64 CHAPTER 4 MULTI-LEVEL INVERTER BASED DVR SYSTEM 4.1 INTRODUCTION Power electronic devices contribute an important part of harmonics in all kind of applications, such as power rectifiers, thyristor converters
More informationPrecision Rectifier Circuits
Precision Rectifier Circuits Rectifier circuits are used in the design of power supply circuits. In such applications, the voltage being rectified are usually much greater than the diode voltage drop,
More informationUART CRYSTAL OSCILLATOR DESIGN GUIDE. 1. Frequently Asked Questions associated with UART Crystal Oscillators
UART CRYSTAL OSCILLATOR DESIGN GUIDE March 2000 Author: Reinhardt Wagner 1. Frequently Asked Questions associated with UART Crystal Oscillators How does a crystal oscillator work? What crystal should I
More informationECE 363 FINAL (F16) 6 problems for 100 pts Problem #1: Fuel Pump Controller (18 pts)
ECE 363 FINAL (F16) NAME: 6 problems for 100 pts Problem #1: Fuel Pump Controller (18 pts) You are asked to design a high-side switch for a remotely operated fuel pump. You decide to use the IRF9520 power
More information1) Consider the circuit shown in figure below. Compute the output waveform for an input of 5kHz
) Consider the circuit shown in figure below. Compute the output waveform for an input of 5kHz Solution: a) Input is of constant amplitude of 2 V from 0 to 0. ms and 2 V from 0. ms to 0.2 ms. The output
More informationELC224 Final Review (12/10/2009) Name:
ELC224 Final Review (12/10/2009) Name: Select the correct answer to the problems 1 through 20. 1. A common-emitter amplifier that uses direct coupling is an example of a dc amplifier. 2. The frequency
More information). The THRESHOLD works in exactly the opposite way; whenever the THRESHOLD input is above 2/3V CC
ENGR 210 Lab 8 RC Oscillators and Measurements Purpose: In the previous lab you measured the exponential response of RC circuits. Typically, the exponential time response of a circuit becomes important
More informationASC-50. OPERATION MANUAL September 2001
ASC-5 ASC-5 OPERATION MANUAL September 21 25 Locust St, Haverhill, Massachusetts 183 Tel: 8/252-774, 978/374-761 FAX: 978/521-1839 TABLE OF CONTENTS ASC-5 1. ASC-5 Overview.......................................................
More informationAnalog/Digital Guitar Synthesizer. Erin Browning Matthew Mohn Michael Senejoa
Analog/Digital Guitar Synthesizer Erin Browning Matthew Mohn Michael Senejoa Project Definition To use a guitar as a functional controller for an analog/digital synthesizer by taking information from a
More informationBME/ISE 3512 Bioelectronics. Laboratory Five - Operational Amplifiers
BME/ISE 3512 Bioelectronics Laboratory Five - Operational Amplifiers Learning Objectives: Be familiar with the operation of a basic op-amp circuit. Be familiar with the characteristics of both ideal and
More informationEE431 Lab 1 Operational Amplifiers
Feb. 10, 2015 Report all measured data and show all calculations Introduction The purpose of this laboratory exercise is for the student to gain experience with measuring and observing the effects of common
More informationAssignment 11. 1) Using the LM741 op-amp IC a circuit is designed as shown, then find the output waveform for an input of 5kHz
Assignment 11 1) Using the LM741 op-amp IC a circuit is designed as shown, then find the output waveform for an input of 5kHz Vo = 1 x R1Cf 0 Vin t dt, voltage output for the op amp integrator 0.1 m 1
More informationThe Design Of Multiple Nodes Wireless Temperature Transmission System Based On STC15W1K24S And CC1101
3rd International Conference on Material, Mechanical and Manufacturing Engineering (IC3ME 2015) The Design Of Multiple Nodes Wireless Temperature Transmission System Based On STC15W1K24S And CC1101 Zhijian
More informationAnalysis and Design of PLL Motor Speed Control System
TELKOMNIKA, Vol. 11, No. 10, October 2013, pp. 5662 ~ 5668 ISSN: 2302-4046 5662 Analysis and Design of PLL Motor Speed Control System Qi chao Zhang Physics & Electronic engineering institute, Hubei University
More informationCHAPTER IV DESIGN AND ANALYSIS OF VARIOUS PWM TECHNIQUES FOR BUCK BOOST CONVERTER
59 CHAPTER IV DESIGN AND ANALYSIS OF VARIOUS PWM TECHNIQUES FOR BUCK BOOST CONVERTER 4.1 Conventional Method A buck-boost converter circuit is a combination of the buck converter topology and a boost converter
More informationEE 330 Laboratory 8 Discrete Semiconductor Amplifiers
EE 330 Laboratory 8 Discrete Semiconductor Amplifiers Fall 2017 Contents Objective:... 2 Discussion:... 2 Components Needed:... 2 Part 1 Voltage Controlled Amplifier... 2 Part 2 Common Source Amplifier...
More informationLAB #10: Analog Interfacing
CS/EE 3720 Handout #10 Spring 2004 Myers LAB #10: Analog Interfacing You must checkoff this lab during your lab section of the week of April 19th. Lab writeup is due in class on April 27th. NO LATE CHECKOFFS
More informationLow distortion signal generator based on direct digital synthesis for ADC characterization
ACTA IMEKO July 2012, Volume 1, Number 1, 59 64 www.imeko.org Low distortion signal generator based on direct digital synthesis for ADC characterization Walter F. Adad, Ricardo J. Iuzzolino Instituto Nacional
More informationPreliminary simulation study of the front-end electronics for the central detector PMTs
Angra Neutrino Project AngraNote 1-27 (Draft) Preliminary simulation study of the front-end electronics for the central detector PMTs A. F. Barbosa Centro Brasileiro de Pesquisas Fsicas - CBPF, e-mail:
More informationReconstruction of Information Technology Curriculum From Empirical Selection to Projection of Thought
2018 4th International Conference on Systems, Computing, and Big Data (ICSCBD 2018) Reconstruction of Information Technology Curriculum From Empirical Selection to Projection of Thought Tian Yanjuan Shandong
More informationCircuit Design and Implementation of Micro-Displacement Measurement System of Laser Self-Mixing Interference
Sensors & Transducers, ol. 64, Issue, February 04, pp. 557 Sensors & Transducers 04 by IFSA Publishing, S. L. http://www.sensorsportal.com Circuit Design and Implementation of MicroDisplacement Measurement
More informationDEPARTMENT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE MASSACHUSETTS INSTITUTE OF TECHNOLOGY CAMBRIDGE, MASSACHUSETTS 02139
DEPARTMENT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE MASSACHUSETTS INSTITUTE OF TECHNOLOGY CAMBRIDGE, MASSACHUSETTS 019.101 Introductory Analog Electronics Laboratory Laboratory No. READING ASSIGNMENT
More informationChlorophyll a/b-chlorophyll a sensor for the Biophysical Oceanographic Sensor Array
Intern Project Report Chlorophyll a/b-chlorophyll a sensor for the Biophysical Oceanographic Sensor Array Mary Ma Mentor: Zbigniew Kolber August 21 st, 2003 Introduction Photosynthetic organisms found
More information