C and solving for C gives 1 C
|
|
- Julia Curtis
- 6 years ago
- Views:
Transcription
1 Physics 241 Lab RLC Radios Name: Section 1: 1. Begin today by reviewing the experimental procedure for finding C, L and resonance. This may help you to do well on your lab practical. (Be sure to sign up for your lab practical time slot today.) 1.1. Reminder of how to measure an unknown capacitance C with an RC circuit: The component voltage amplitudes of an RC circuit driven sinusoidally with angular frequency drive are given by V C,amplitude C Z V source,amplitude and V R,amplitude R Z V source,amplitude. These component voltage amplitudes are equal when C R. Substituting R C 1 drive C and solving for C gives 1 C. R 2 f drive Remember this is only true when the voltage amplitude across the resistor is equal to the voltage amplitude across the capacitor. Therefore, to find an unknown capacitance C, measure R and find the driving frequency where V C,amplitude V R,amplitude. (No question.) 1.2. Reminder of how to measure an unknown inductance L with an RL circuit: In an RL circuit driven sinusoidally with angular frequency drive, V L,amplitude L Z V and V R source,amplitude R,amplitude Z V. source,amplitude These component voltage amplitudes are equal when L R. Substituting R L drive L and solving for L gives R L. 2 f drive Remember this is only true when the voltage amplitude across the resistor is equal to the voltage amplitude across the inductor. Therefore, to find an unknown inductance L, measure R and find the driving frequency where V L,amplitude V R,amplitude. (No question.) 1.3. Reminder of how to measure the resonant frequency resonance of an RLC circuit: In a sinusoidally driven RLC circuit, there is a driving frequency at which the current in the resistor is maximized (i.e. absorbing the most power from the oscillating source). This happens when the total circuit impedance Z R 2 L C 2 is minimized. This occurs when L C 2 0. The driving frequency at which L C 0 occurs is called the resonant frequency. This can 1 be found by setting C equal to L so that drive C L. Solving gives 1 drive drive resonance L C. (No question.)
2 1.4. A plot of current vs. driving frequency in an RLC circuit has a maximum at the resonant frequency. This is useful because an RLC circuit can be tuned to a specific resonant frequency by adjusting its C or L. If you lower the resistance of an RLC circuit and retake your measurements, the resonant frequency won t change (since L and C don t change), but you will measure a higher quality factor: The smaller the resistance, the sharper this peak gets. This is useful because an RLC circuit with low resistance only reacts to frequencies very near resonance while ignoring other driving frequencies. A radio can be made using a low-resistance RLC circuit that responds only to a specific radio frequency electromagnetic wave. How could you make the peak as sharp as possible in an RLC circuit for use in a radio? Take the resistor out so that only the tiny resistance of metal wires is present. (No question.) 1.5. Reminder of how to observe f resonance using an oscilloscope: The most accurate way to find f resonance is to utilize the fact that at resonance, V R (t) and V source (t) are exactly in phase with each other with equal amplitudes. You should place each of these voltages on your oscilloscope channels and examine an XY formatted display. The resonance frequency is easily found because you will see an ellipse when V R (t) and V source (t) are out of phase and a diagonal line when they are in phase. You see a straight line when they are in phase because both voltages must reach zero simultaneously. (No question.) Section 2: Modulating High Frequency Waves with Low Frequency Waves 2.1. Imagine that you want to transmit the following sound wave from one solenoid (the transmitter) to another solenoid (the receiver). The two solenoids are not connected in any way so that the oscillating magnetic field inside one solenoid must be made to oscillate within the other solenoid to utilize Faraday s Law.
3 Unfortunately, this wave is alternating much too slowly to induce a large voltage in the receiving solenoid. Remember the equation for mutual inductance, V induced di circuit 1 M 1 to 2, where in circuit 2 dt M is a constant that describes how much the solenoids overlap. If the current doesn t oscillate rapidly enough, then V induced in circuit 2 is very small. Gee, I wish this wave oscillated more quickly to cause a bigger induced voltage in the receiving solenoid, you might say. But then it wouldn t be the same sound pitch that you wanted to hear in the first place! Still, it sounds like something you would say. (No question.) 2.2. Next examine a wave that oscillates quickly, radio or slightly sub-radio frequency for example. This isn t the frequency you want to hear (you are not able to!), but it does oscillate so quickly as to create a large induced voltage in the receiving solenoid. I.e., it oscillates quickly enough to be transmitted into the receiving circuit through the mutual inductance of the transformer (overlapping solenoids) The solution is to combine the two waves by multiplying them together. This modulated wave has the properties of both waves: it carries information about the audio frequency component and it oscillates quickly enough to generate a highly induced voltage in the receiver circuit.
4 The modulating wave (or envelope wave) is the low frequency oscillation while the high frequency oscillation is often called the carrier wave Why are we interested in using a low frequency envelope wave in today s lab? Your answer: 2.5. Why do we need to use a rapidly oscillating carrier wave in today s lab? Your answer: 2.6. In today s lab, we would like to transmit a modulated sound wave transmitted by one solenoid into another receiving solenoid. We will use a capacitor in the second receiving circuit to make an RLC receiving circuit. By changing the capacitor of the receiving circuit, we can adjust its resonant frequency. Therefore, we will be able to tune our receiver to a particular radio frequency. Now you would like to listen to your transmitted wave. But there is a huge problem. Whenever the wave is positive, it causes an upward force on the speaker, and whenever it is negative it causes a downward force on the speaker. The modulated wave is oscillating up and down with the rapid radio frequency, much too fast for the speaker to respond to. It just sits there quivering. The trick is to add a diode to the output. Remember that a diode is a quantum mechanical component that only allows current to flow in one direction once a turn-on voltage has been reached (determined by the semiconductor band gap energy). This will allow only positive voltage to reach the speaker. The speaker now gets pushed out a maximum distance at the maximum amplitude of the pulse and relaxes at the minimum Would you be able to hear the speaker if the direction of the diode in the circuit was reversed? Explain your answer? Your answer and explanation:
5 Section 3: Now you will experimentally use a sound wave to modulate a radio frequency wave. Never insert the speaker directly into your ear without first verifying that the sound level is safe. The basic set-up provided consists of two solenoids wound together (to be perfectly overlapping) and a diode-speaker connector: Clean your ear-speaker with alcohol. Set your function generator to 3,600 Hz. Connect your function generator to the speaker/diode connection of your double-solenoid board as shown below (PVC pipe with wound red wire, only looks like one solenoid but is really two wound together) Slowly increase the output voltage until you can hear the signal. Ask for help if you have any doubts about the proper operation of these devices. Find the upper end of the frequency range of your hearing. It may be significantly less than your classmates if you are older or have suffered hearing loss due to loud noises. Also note any intermediate ranges of hearing loss. Do these frequencies correspond to the kinds of music you listen to (too loudly)? Record your measured range(s) of hearing: f max,sound = Hz 3.2. What frequency makes the speaker diaphragm vibrations resonate, i.e. what is the resonant frequency that makes the speaker the loudest? There may be more than one resonant frequency for your speaker since it is a complex mechanical system. Your observed speaker resonant frequency(s): f resonance,speaker = Hz
6 3.3. Now input an audio-frequency signal of 1,000 Hz from your function generator into your RF modulator. Use a carrier radio-frequency wave of 500,000 Hz to create a modulated output wave of 1,000 Hz envelope waves surrounding a 500 khz high frequency wave. What are the periods for these two kinds of oscillations in the output modulated wave? Your answer: T audio = s T RF = s Examine the output of this signal on your oscilloscope at two time ranges so that you can see the audio-frequency signal and the radio-frequency signal separately. To do this, choose a seconds per division setting for the time axis that is appropriate for the time scale of the wave you wish to examine (i.e., use the wave s period). You may need to press the run-stop button to view the wave packets if they appear smeared out on the oscilloscope. Sketch the appearance of the modulated wave at the audio frequency scale and then the radio frequency scale, and record the time scales used to observe the waves. Notice that the RF generator does not necessarily produce a clean RF output as was discussed earlier in this handout. Be sure you can hear the envelope waves of the modulated signal. Make sketches of the modulated wave and record the time-scale used: Radio Frequency Audio Frequency
7 Section 4: Now you will use a sound wave to modulate a radio frequency wave, then use mutual inductance to transmit the radio frequency wave to a separate RLC circuit, and finally listen to the sound wave First determine the inductances L A and L B of your solenoids using the methods described in part 1. In other words, for each solenoid create an RL circuit driven sinusoidally and monitor the voltage across the resistor and inductor as you vary the driving frequency. Use the appropriate equation to solve for the inductance L. Even with the 10 resistor, you will need to use large driving frequencies as these inductances are very small. Your measured inductances: 4.2. Input the audio signal at f resonance,speaker from your function generator into your RF modulator initially set to f RF = 550,000 Hz. Use the following sketch to set up your circuit. We will refer to the solenoid connected to the RF modulator the transmitter and the solenoid connected to the speaker the receiver. The variable capacitor component represents the capacitance you choose to use Calculate the resonant frequency f resonance for your receiver solenoid in series with a F capacitor. Your calculated resonant frequency: 4.4. With your capacitor box set to F, use your oscilloscope to measure the voltage signal being received across the speaker. Adjust f RF until your transmitted signal is in resonance with the receiving circuit and record this f RF, resonance. You will see this as maximizing the signal sent to the speaker. Some students can perform this part of the experiment searching for RF resonance by hearing when the transmitted signal is the loudest. This occurs when L,receiver = C,receiver in your receiving circuit. Compare this to your result in 4.3. Your measured resonant frequency and comparison:
8 Section 5: Write directly onto the figure below to completely explain how this compound circuit(s) works. You can use labels, text and arrows, and you do not need to write in complete sentences. Note that the speaker is shown wired in parallel to the receiving RLC circuit rather than in series, but you do not need to explain this particular feature. You will need to use equations described earlier in this lab for full credit.
9 Section 6: Now you will replace the function generator used in part 4 of this lab with an antenna attached to the outside of the building to detect radio frequency electromagnetic waves permeating the surrounding atmosphere. Room noise must be kept to a minimum for success here Implement the following sketch Using the receiver inductance L receiver measured in part 4.1 and the three smallest capacitances available to you, calculate the three resonant frequencies f resonant that you could detect with your receiving RLC circuit using the smallest capacitors. Your calculated detectable radio wave frequencies: 6.3. Change your receiver capacitance using single capacitors and series capacitors to detect AM radio stations. The AM radio band is from 520 khz to 1.61 MHz. Rely on the oscilloscope rather than the ear-speaker to detect induced voltages in the receiving RLC circuit since it is unlikely you will be able to hear the radio station. (Some students manage to barely hear the station in a very quiet room). Record the frequency of any broadcast stations you find. Your detected radio station frequencies: Report Guidelines: Write a separate section using the labels and instructions provided below. You may add diagrams and equations by hand to your final printout. However, images, text or equations plagiarized from the internet are not allowed! Title A catchy title worth zero points so make it fun. Goals Write a 3-4 sentence paragraph stating the experimental goals of the lab (the big picture). Do NOT state the learning goals (keep it scientific). [~1-point] Concepts & Equations [~12-points]. Procedure & Results Do not write this section. [~0-points] Conclusion Write at least three paragraphs where you analyze and interpret the results you observed or measured based upon your previous discussion of concepts and equations. It is all right to sound repetitive since it is important to get your scientific points across to your reader. Write a separate paragraph analyzing and interpreting your results from your open-ended experiment. Do NOT write personal statements or feeling about the learning process (keep it scientific). [~7-points] Graphs None. [0-points] Worksheet thoroughly completed in class and signed by your TA. [~5-points]
Week 8 AM Modulation and the AM Receiver
Week 8 AM Modulation and the AM Receiver The concept of modulation and radio transmission is introduced. An AM receiver is studied and the constructed on the prototyping board. The operation of the AM
More informationAC CIRCUITS. Part 1: Inductance of a Coil. THEORY: If the current in a resistor R, a capacitor C, and/or an inductor L is given by:
AC CIRCUITS OBJECTIVE: To study the effect of alternating currents on various electrical quantities in circuits containing resistors, capacitors and inductors. Part 1: Inductance of a Coil THEORY: If the
More informationAC Circuits INTRODUCTION DISCUSSION OF PRINCIPLES. Resistance in an AC Circuit
AC Circuits INTRODUCTION The study of alternating current 1 (AC) in physics is very important as it has practical applications in our daily lives. As the name implies, the current and voltage change directions
More informationExperiment 9: AC circuits
Experiment 9: AC circuits Nate Saffold nas2173@columbia.edu Office Hour: Mondays, 5:30PM-6:30PM @ Pupin 1216 INTRO TO EXPERIMENTAL PHYS-LAB 1493/1494/2699 Introduction Last week (RC circuit): This week:
More informationGoals. Introduction. To understand the use of root mean square (rms) voltages and currents.
Lab 10. AC Circuits Goals To show that AC voltages cannot generally be added without accounting for their phase relationships. That is, one must account for how they vary in time with respect to one another.
More informationLab 10 - INTRODUCTION TO AC FILTERS AND RESONANCE
159 Name Date Partners Lab 10 - INTRODUCTION TO AC FILTERS AND RESONANCE OBJECTIVES To understand the design of capacitive and inductive filters To understand resonance in circuits driven by AC signals
More informationSound Waves and Beats
Physics Topics Sound Waves and Beats If necessary, review the following topics and relevant textbook sections from Serway / Jewett Physics for Scientists and Engineers, 9th Ed. Traveling Waves (Serway
More informationEE2210 Laboratory Project 1 Fall 2013 Function Generator and Oscilloscope
EE2210 Laboratory Project 1 Fall 2013 Function Generator and Oscilloscope For students to become more familiar with oscilloscopes and function generators. Pre laboratory Work Read the TDS 210 Oscilloscope
More informationAn induced emf is the negative of a changing magnetic field. Similarly, a self-induced emf would be found by
This is a study guide for Exam 4. You are expected to understand and be able to answer mathematical questions on the following topics. Chapter 32 Self-Induction and Induction While a battery creates an
More informationExperiment No. 2 Pre-Lab Signal Mixing and Amplitude Modulation
Experiment No. 2 Pre-Lab Signal Mixing and Amplitude Modulation Read the information presented in this pre-lab and answer the questions given. Submit the answers to your lab instructor before the experimental
More informationGoals. Introduction. To understand the use of root mean square (rms) voltages and currents.
Lab 10. AC Circuits Goals To show that AC voltages cannot generally be added without accounting for their phase relationships. That is, one must account for how they vary in time with respect to one another.
More informationLab E5: Filters and Complex Impedance
E5.1 Lab E5: Filters and Complex Impedance Note: It is strongly recommended that you complete lab E4: Capacitors and the RC Circuit before performing this experiment. Introduction Ohm s law, a well known
More informationEECS 216 Winter 2008 Lab 3: AM Radio Part II: In-Lab & Post-lab Assignment
EECS 216 Winter 2008 Lab 3: Part II: In-Lab & Post-lab Assignment c Kim Winick 2008 1 Introduction In this laboratory you will assemble and test a working superheterodyne AM radio consisting of a front-end
More informationStudy of Inductive and Capacitive Reactance and RLC Resonance
Objective Study of Inductive and Capacitive Reactance and RLC Resonance To understand how the reactance of inductors and capacitors change with frequency, and how the two can cancel each other to leave
More informationINTRODUCTION TO AC FILTERS AND RESONANCE
AC Filters & Resonance 167 Name Date Partners INTRODUCTION TO AC FILTERS AND RESONANCE OBJECTIVES To understand the design of capacitive and inductive filters To understand resonance in circuits driven
More informationChapter 4: AC Circuits and Passive Filters
Chapter 4: AC Circuits and Passive Filters Learning Objectives: At the end of this topic you will be able to: use V-t, I-t and P-t graphs for resistive loads describe the relationship between rms and peak
More informationExperiment 2: Transients and Oscillations in RLC Circuits
Experiment 2: Transients and Oscillations in RLC Circuits Will Chemelewski Partner: Brian Enders TA: Nielsen See laboratory book #1 pages 5-7, data taken September 1, 2009 September 7, 2009 Abstract Transient
More informationPHASES IN A SERIES LRC CIRCUIT
PHASES IN A SERIES LRC CIRCUIT Introduction: In this lab, we will use a computer interface to analyze a series circuit consisting of an inductor (L), a resistor (R), a capacitor (C), and an AC power supply.
More informationSTEP RESPONSE OF 1 ST AND 2 ND ORDER CIRCUITS
STEP RESPONSE OF 1 ST AND 2 ND ORDER CIRCUITS YOUR NAME GTA S SIGNATURE LAB MEETING TIME Objectives: To observe responses of first and second order circuits - RC, RL and RLC circuits, source-free or with
More informationFilters And Waveform Shaping
Physics 3330 Experiment #3 Fall 2001 Purpose Filters And Waveform Shaping The aim of this experiment is to study the frequency filtering properties of passive (R, C, and L) circuits for sine waves, and
More informationSimple Oscillators. OBJECTIVES To observe some general properties of oscillatory systems. To demonstrate the use of an RLC circuit as a filter.
Simple Oscillators Some day the program director will attain the intelligent skill of the engineers who erected his towers and built the marvel he now so ineptly uses. Lee De Forest (1873-1961) OBJETIVES
More informationPhysics 309 Lab 3 Bipolar junction transistor
Physics 39 Lab 3 Bipolar junction transistor The purpose of this third lab is to learn the principles of operation of a bipolar junction transistor, how to characterize its performances, and how to use
More informationEECS40 RLC Lab guide
EECS40 RLC Lab guide Introduction Second-Order Circuits Second order circuits have both inductor and capacitor components, which produce one or more resonant frequencies, ω0. In general, a differential
More informationWorksheet for Exploration 31.1: Amplitude, Frequency and Phase Shift
Worksheet for Exploration 31.1: Amplitude, Frequency and Phase Shift We characterize the voltage (or current) in AC circuits in terms of the amplitude, frequency (period) and phase. The sinusoidal voltage
More informationAM Radio Lab. How Stuff Works. Mission College. Brad #1 Brad #2 Brad #3 Brad #4. Introduction:
How Stuff Works Hope College Mission College Name: AM Radio Lab Brad #1 Brad #2 Brad #3 Brad #4 Introduction: In this lab you will construct an AM radio receiver that operates without a battery. The energy
More informationFREQUENCY RESPONSE OF R, L AND C ELEMENTS
FREQUENCY RESPONSE OF R, L AND C ELEMENTS Marking scheme : Methods & diagrams : 3 Graph plotting : - Tables & analysis : 2 Questions & discussion : 3 Performance : 2 Aim: This experiment will investigate
More informationDepartment of Electrical & Computer Engineering Technology. EET 3086C Circuit Analysis Laboratory Experiments. Masood Ejaz
Department of Electrical & Computer Engineering Technology EET 3086C Circuit Analysis Laboratory Experiments Masood Ejaz Experiment # 1 DC Measurements of a Resistive Circuit and Proof of Thevenin Theorem
More informationClass #7: Experiment L & C Circuits: Filters and Energy Revisited
Class #7: Experiment L & C Circuits: Filters and Energy Revisited In this experiment you will revisit the voltage oscillations of a simple LC circuit. Then you will address circuits made by combining resistors
More informationTopic Advanced Radio Receivers. Explain that an RF amplifier can be used to improve sensitivity;
Learning Objectives: At the end of this topic you will be able to; Explain that an RF amplifier can be used to improve sensitivity; Explain that a superheterodyne receiver offers improved selectivity and
More informationLab #11 Rapid Relaxation Part I... RC and RL Circuits
Rev. D. Day 10/18/06; 7/15/10 HEFW PH262 Page 1 of 6 Lab #11 Rapid Relaxation Part I... RC and RL Circuits INTRODUCTION Exponential behavior in electrical circuits is frequently referred to as "relaxation",
More informationRadio Frequency Electronics
Radio Frequency Electronics Frederick Emmons Terman Transformers Masters degree from Stanford and Ph.D. from MIT Later a professor at Stanford His students include William Hewlett and David Packard Wrote
More informationLaboratory Exercise 6 THE OSCILLOSCOPE
Introduction Laboratory Exercise 6 THE OSCILLOSCOPE The aim of this exercise is to introduce you to the oscilloscope (often just called a scope), the most versatile and ubiquitous laboratory measuring
More informationPre-Lab. Introduction
Pre-Lab Read through this entire lab. Perform all of your calculations (calculated values) prior to making the required circuit measurements. You may need to measure circuit component values to obtain
More informationVECTRONICS. SWR-66 Dip Meter Adapter
INTRODUCTION VECTRONICS SWR-66 Dip Meter Adapter Thank you for purchasing the SWR-66 Dip Meter Adapter. The SWR-66 Dip Meter Adapter works with your Vectronics SWR-584 HF/VHF SWR Analyzer. The SWR-66 Dip
More informationAbout Q. About Q, Xtal Set Society, Inc
About Q, Xtal Set Society, Inc In the crystal radio hobby and in electronics in general Q can refer to a number of things: the Q of a coil, the Q of a circuit, the quality factor of some item, or the label
More informationHomework Assignment 03
Question (75 points) Homework Assignment 03 Overview Tuned Radio Frequency (TRF) receivers are some of the simplest type of radio receivers. They consist of a parallel RLC bandpass filter with bandwidth
More informationNEW YORK CITY COLLEGE of TECHNOLOGY THE CITY UNIVERSITY OF NEW YORK DEPARTMENT OF ELECTRICAL ENGINEERING AND TELECOMMUNICATIONS TECHNOLOGIES
NEW YORK CITY COLLEGE of TECHNOLOGY THE CITY UNIVERSITY OF NEW YORK DEPARTMENT OF ELECTRICAL ENGINEERING AND TELECOMMUNICATIONS TECHNOLOGIES Course : EET 24 Communications Electronics Module : AM Tx and
More information15. the power factor of an a.c circuit is.5 what will be the phase difference between voltage and current in this
1 1. In a series LCR circuit the voltage across inductor, a capacitor and a resistor are 30 V, 30 V and 60 V respectively. What is the phase difference between applied voltage and current in the circuit?
More informationNavy Electricity and Electronics Training Series
NONRESIDENT TRAINING COURSE SEPTEMBER 1998 Navy Electricity and Electronics Training Series Module 9 Introduction to Wave- Generation and Wave-Shaping NAVEDTRA 14181 DISTRIBUTION STATEMENT A: Approved
More informationLab E5: Filters and Complex Impedance
E5.1 Lab E5: Filters and Complex Impedance Note: It is strongly recommended that you complete lab E4: Capacitors and the RC Circuit before performing this experiment. Introduction Ohm s law, a well known
More informationExperiment 7: Undriven & Driven RLC Circuits
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2006 OBJECTIVES Experiment 7: Undriven & Driven RLC Circuits 1. To explore the time dependent behavior of RLC Circuits, both driven
More informationLABORATORY 4. Palomar College ENGR210 Spring 2017 ASSIGNED: 3/21/17
LABORATORY 4 ASSIGNED: 3/21/17 OBJECTIVE: The purpose of this lab is to evaluate the transient and steady-state circuit response of first order and second order circuits. MINIMUM EQUIPMENT LIST: You will
More information11. AC-resistances of capacitor and inductors: Reactances.
11. AC-resistances of capacitor and inductors: Reactances. Purpose: To study the behavior of the AC voltage signals across elements in a simple series connection of a resistor with an inductor and with
More informationDC and AC Circuits. Objective. Theory. 1. Direct Current (DC) R-C Circuit
[International Campus Lab] Objective Determine the behavior of resistors, capacitors, and inductors in DC and AC circuits. Theory ----------------------------- Reference -------------------------- Young
More informationCharan Langton, Editor
Charan Langton, Editor SIGNAL PROCESSING & SIMULATION NEWSLETTER Baseband, Passband Signals and Amplitude Modulation The most salient feature of information signals is that they are generally low frequency.
More informationElectron Spin Resonance v2.0
Electron Spin Resonance v2.0 Background. This experiment measures the dimensionless g-factor (g s ) of an unpaired electron using the technique of Electron Spin Resonance, also known as Electron Paramagnetic
More informationLaboratory Project 4: Frequency Response and Filters
2240 Laboratory Project 4: Frequency Response and Filters K. Durney and N. E. Cotter Electrical and Computer Engineering Department University of Utah Salt Lake City, UT 84112 Abstract-You will build a
More informationElectronic Instrumentation ENGR-4300 Fall 2002 Project 2: Optical Communications Link
Project 2: Optical Communications Link For this project, each group will build a transmitter circuit and a receiver circuit. It is suggested that 1 or 2 students build and test the individual components
More informationCHAPTER 14. Introduction to Frequency Selective Circuits
CHAPTER 14 Introduction to Frequency Selective Circuits Frequency-selective circuits Varying source frequency on circuit voltages and currents. The result of this analysis is the frequency response of
More informationLab 3: AC Low pass filters (version 1.3)
Lab 3: AC Low pass filters (version 1.3) WARNING: Use electrical test equipment with care! Always double-check connections before applying power. Look for short circuits, which can quickly destroy expensive
More informationUniversity of Jordan School of Engineering Electrical Engineering Department. EE 219 Electrical Circuits Lab
University of Jordan School of Engineering Electrical Engineering Department EE 219 Electrical Circuits Lab EXPERIMENT 7 RESONANCE Prepared by: Dr. Mohammed Hawa EXPERIMENT 7 RESONANCE OBJECTIVE This experiment
More informationElectric Circuit Fall 2017 Lab10. LABORATORY 10 RLC Circuits. Guide. Figure 1: Voltage and current in an AC circuit.
LABORATORY 10 RLC Circuits Guide Introduction RLC circuit When an AC signal is input to a RLC circuit, voltage across each element varies as a function of time. The voltage will oscillate with a frequency
More informationOptical Modulation and Frequency of Operation
Optical Modulation and Frequency of Operation Developers AB Overby Objectives Preparation Background The objectives of this experiment are to describe and illustrate the differences between frequency of
More informationLab 2: Linear and Nonlinear Circuit Elements and Networks
OPTI 380B Intermediate Optics Laboratory Lab 2: Linear and Nonlinear Circuit Elements and Networks Objectives: Lean how to use: Function of an oscilloscope probe. Characterization of capacitors and inductors
More information#8A RLC Circuits: Free Oscillations
#8A RL ircuits: Free Oscillations Goals In this lab we investigate the properties of a series RL circuit. Such circuits are interesting, not only for there widespread application in electrical devices,
More informationWireless Communication
Equipment and Instruments Wireless Communication An oscilloscope, a signal generator, an LCR-meter, electronic components (see the table below), a container for components, and a Scotch tape. Component
More information1 Propagating Light. Reflection and Refraction
PRACTICE FINAL 1 1) An ac source of period T and maximum voltage V is connected to a single unknown ideal element that is either a resistor, and inductor, or a capacitor. At time t = 0 the voltage is zero.
More informationThe Series RLC Circuit and Resonance
Purpose Theory The Series RLC Circuit and Resonance a. To study the behavior of a series RLC circuit in an AC current. b. To measure the values of the L and C using the impedance method. c. To study the
More informationBasic Electronics Learning by doing Prof. T.S. Natarajan Department of Physics Indian Institute of Technology, Madras
Basic Electronics Learning by doing Prof. T.S. Natarajan Department of Physics Indian Institute of Technology, Madras Lecture 38 Unit junction Transistor (UJT) (Characteristics, UJT Relaxation oscillator,
More informationProperties of Sound. Goals and Introduction
Properties of Sound Goals and Introduction Traveling waves can be split into two broad categories based on the direction the oscillations occur compared to the direction of the wave s velocity. Waves where
More informationEXPERIMENT 4: RC, RL and RD CIRCUITs
EXPERIMENT 4: RC, RL and RD CIRCUITs Equipment List Resistor, one each of o 330 o 1k o 1.5k o 10k o 100k o 1000k 0.F Ceramic Capacitor 4700H Inductor LED and 1N4004 Diode. Introduction We have studied
More informationEE301 ELECTRONIC CIRCUITS CHAPTER 2 : OSCILLATORS. Lecturer : Engr. Muhammad Muizz Bin Mohd Nawawi
EE301 ELECTRONIC CIRCUITS CHAPTER 2 : OSCILLATORS Lecturer : Engr. Muhammad Muizz Bin Mohd Nawawi 2.1 INTRODUCTION An electronic circuit which is designed to generate a periodic waveform continuously at
More informationIntroduction. Inductors in AC Circuits.
Module 3 AC Theory What you ll learn in Module 3. Section 3.1 Electromagnetic Induction. Magnetic Fields around Conductors. The Solenoid. Section 3.2 Inductance & Back e.m.f. The Unit of Inductance. Factors
More informationSpeaking of Electricity & Magnetism
Speaking of Electricity & Magnetism Pre- Lab: Sound Waves and Their Generation by Speakers A Bit of History Mr. Watson, come here! I want to see you! These words were spoken by Alexander Graham Bell to
More informationBTEC NATIONALS-ELECTRIC AND ELECTRONIC PRINCIPLES ASSIGNMENT 1 RESISTANCE IN ELECTRIC CIRCUITS
BTEC NATIONALS-ELECTRIC AND ELECTRONIC PRINCIPLES ASSIGNMENT 1 RESISTANCE IN ELECTRIC CIRCUITS NAME: Date Issued I agree to the assessment as contained in this assignment. I confirm that the work submitted
More informationECE212H1F University of Toronto 2017 EXPERIMENT #4 FIRST AND SECOND ORDER CIRCUITS ECE212H1F
ECE212H1F University of Toronto 2017 EXPERIMENT #4 FIRST AND SECOND ORDER CIRCUITS ECE212H1F OBJECTIVES: To study the voltage-current relationship for a capacitor. To study the step responses of a series
More informationCH 1. Large coil. Small coil. red. Function generator GND CH 2. black GND
Experiment 6 Electromagnetic Induction "Concepts without factual content are empty; sense data without concepts are blind... The understanding cannot see. The senses cannot think. By their union only can
More informationLab 1. Resonance and Wireless Energy Transfer Physics Enhancement Programme Department of Physics, Hong Kong Baptist University
Lab 1. Resonance and Wireless Energy Transfer Physics Enhancement Programme Department of Physics, Hong Kong Baptist University 1. OBJECTIVES Introduction to the concept of resonance Observing resonance
More informationExercise 1: RF Stage, Mixer, and IF Filter
SSB Reception Analog Communications Exercise 1: RF Stage, Mixer, and IF Filter EXERCISE OBJECTIVE DISCUSSION On the circuit board, you will set up the SSB transmitter to transmit a 1000 khz SSB signal
More informationAC CURRENTS, VOLTAGES, FILTERS, and RESONANCE
July 22, 2008 AC Currents, Voltages, Filters, Resonance 1 Name Date Partners AC CURRENTS, VOLTAGES, FILTERS, and RESONANCE V(volts) t(s) OBJECTIVES To understand the meanings of amplitude, frequency, phase,
More informationtotal j = BA, [1] = j [2] total
Name: S.N.: Experiment 2 INDUCTANCE AND LR CIRCUITS SECTION: PARTNER: DATE: Objectives Estimate the inductance of the solenoid used for this experiment from the formula for a very long, thin, tightly wound
More informationLaboratory Assignment 5 Amplitude Modulation
Laboratory Assignment 5 Amplitude Modulation PURPOSE In this assignment, you will explore the use of digital computers for the analysis, design, synthesis, and simulation of an amplitude modulation (AM)
More informationChapter 18 RADIOS. Note: A simplified circuit for a radio sending unit is shown in Figure A discussion of its workings is presented below:
Chapter 18--Radios Chapter 18 RADIOS A.) Radio Circuits--Sending Stations: Note: A simplified circuit for a radio sending unit is shown in Figure 18.1. A discussion of its workings is presented below:
More informationPhyzLab: Fork it Over
PhyzLab: Fork it Over a determination of the speed of sound Pre-Lab. STANDING WAVES IN GENERAL a. Consider the standing waves illustrated below. i. Label each end either fixed or free. ii. Label the nodes
More informationEXPERIMENT NUMBER 8 Introduction to Active Filters
EXPERIMENT NUMBER 8 Introduction to Active Filters i-1 Preface: Preliminary exercises are to be done and submitted individually. Laboratory hardware exercises are to be done in groups. This laboratory
More informationExperiment 9 AC Circuits
Experiment 9 AC Circuits "Look for knowledge not in books but in things themselves." W. Gilbert (1540-1603) OBJECTIVES To study some circuit elements and a simple AC circuit. THEORY All useful circuits
More informationLab E2: B-field of a Solenoid. In the case that the B-field is uniform and perpendicular to the area, (1) reduces to
E2.1 Lab E2: B-field of a Solenoid In this lab, we will explore the magnetic field created by a solenoid. First, we must review some basic electromagnetic theory. The magnetic flux over some area A is
More informationEXPERIMENT #2 CARRIER OSCILLATOR
EXPERIMENT #2 CARRIER OSCILLATOR INTRODUCTION: The oscillator is usually the first stage of any transmitter. Its job is to create a radio-frequency carrier that can be amplified and modulated before being
More informationVE7CNF - 630m Antenna Matching Measurements Using an Oscilloscope
VE7CNF - 630m Antenna Matching Measurements Using an Oscilloscope Toby Haynes October, 2016 1 Contents VE7CNF - 630m Antenna Matching Measurements Using an Oscilloscope... 1 Introduction... 1 References...
More informationChapter 33. Alternating Current Circuits
Chapter 33 Alternating Current Circuits Alternating Current Circuits Electrical appliances in the house use alternating current (AC) circuits. If an AC source applies an alternating voltage to a series
More informationElectric Circuit Fall 2016 Pingqiang Zhou LABORATORY 7. RC Oscillator. Guide. The Waveform Generator Lab Guide
LABORATORY 7 RC Oscillator Guide 1. Objective The Waveform Generator Lab Guide In this lab you will first learn to analyze negative resistance converter, and then on the basis of it, you will learn to
More informationElectrical Fundamentals and Basic Components Chapters T2, T3, G4
Electrical Fundamentals and Basic Components Chapters T2, T3, G4 Some Basic Math, Electrical Fundamentals, AC Power, The Basics of Basic Components, A Little More Component Detail, Reactance and Impedance
More informationPhysics Jonathan Dowling. Lecture 35: MON 16 NOV Electrical Oscillations, LC Circuits, Alternating Current II
hysics 2113 Jonathan Dowling Lecture 35: MON 16 NOV Electrical Oscillations, LC Circuits, Alternating Current II Damped LCR Oscillator Ideal LC circuit without resistance: oscillations go on forever; ω
More informationThe RLC Series Circuit with an AC Source
The R Series ircuit with an A Source Introduction Ohm s law and R circuit labs use a steady current. However, this lab uses a different power supply, which is alternating current (A). The previous electronics
More informationUniversity of Jordan School of Engineering Electrical Engineering Department. EE 219 Electrical Circuits Lab
University of Jordan School of Engineering Electrical Engineering Department EE 219 Electrical Circuits Lab EXPERIMENT 4 TRANSIENT ANALYSIS Prepared by: Dr. Mohammed Hawa EXPERIMENT 4 TRANSIENT ANALYSIS
More informationResonance in Circuits
Resonance in Circuits Purpose: To map out the analogy between mechanical and electronic resonant systems To discover how relative phase depends on driving frequency To gain experience setting up circuits
More informationChapter 24. Alternating Current Circuits
Chapter 24 Alternating Current Circuits Objective of Lecture Generators and Motors Inductance RL Circuits (resistance and inductance) Transformers AC REMINDER: WORK ON THE EXAMPLES Read physics in perspective
More informationExercise 2: Q and Bandwidth of a Series RLC Circuit
Series Resonance AC 2 Fundamentals Exercise 2: Q and Bandwidth of a Series RLC Circuit EXERCISE OBJECTIVE When you have completed this exercise, you will be able to calculate the bandwidth and Q of a series
More informationLab 7 - Inductors and LR Circuits
Lab 7 Inductors and LR Circuits L7-1 Name Date Partners Lab 7 - Inductors and LR Circuits The power which electricity of tension possesses of causing an opposite electrical state in its vicinity has been
More informationAC Circuits. "Look for knowledge not in books but in things themselves." W. Gilbert ( )
AC Circuits "Look for knowledge not in books but in things themselves." W. Gilbert (1540-1603) OBJECTIVES To study some circuit elements and a simple AC circuit. THEORY All useful circuits use varying
More informationMiniproject: AM Radio
Objective UNIVERSITY OF CALIFORNIA AT BERKELEY College of Engineering Department of Electrical Engineering and Computer Sciences EE05 Lab Experiments Miniproject: AM Radio Until now, the labs have focused
More informationUniversity of North Carolina, Charlotte Department of Electrical and Computer Engineering ECGR 3157 EE Design II Fall 2009
University of North Carolina, Charlotte Department of Electrical and Computer Engineering ECGR 3157 EE Design II Fall 2009 Lab 1 Power Amplifier Circuits Issued August 25, 2009 Due: September 11, 2009
More informationSpeaking of Electricity & Magnetism
Speaking of Electricity & Magnetism Pre- Lab: Sound Waves and Their Generation from Speakers A Bit of History Mr. Watson, come here! I want to see you! These words were spoken by Alexander Graham Bell
More informationEXPERIMENT 4: RC, RL and RD CIRCUITs
EXPERIMENT 4: RC, RL and RD CIRCUITs Equipment List An assortment of resistor, one each of (330, 1k,1.5k, 10k,100k,1000k) Function Generator Oscilloscope 0.F Ceramic Capacitor 100H Inductor LED and 1N4001
More informationBEATS AND MODULATION ABSTRACT GENERAL APPLICATIONS BEATS MODULATION TUNING HETRODYNING
ABSTRACT The theory of beats is investigated experimentally with sound and is compared with amplitude modulation using electronic signal generators and modulators. Observations are made by ear, by oscilloscope
More informationUniversity of Pittsburgh
University of Pittsburgh Experiment #11 Lab Report Inductance/Transformers Submission Date: 12/04/2017 Instructors: Dr. Minhee Yun John Erickson Yanhao Du Submitted By: Nick Haver & Alex Williams Station
More informationAlternating Current. Slide 1 / 69. Slide 2 / 69. Slide 3 / 69. Topics to be covered. Sources of Alternating EMF. Sources of alternating EMF
Slide 1 / 69 lternating urrent Sources of alternating EMF Transformers ircuits and Impedance Topics to be covered Slide 2 / 69 LR Series ircuits Resonance in ircuit Oscillations Sources of lternating EMF
More informationAlternating Current. Slide 2 / 69. Slide 1 / 69. Slide 3 / 69. Slide 4 / 69. Slide 6 / 69. Slide 5 / 69. Topics to be covered
Slide 1 / 69 lternating urrent Sources of alternating EMF ircuits and Impedance Slide 2 / 69 Topics to be covered LR Series ircuits Resonance in ircuit Oscillations Slide 3 / 69 Sources of lternating EMF
More informationDiodes This week, we look at switching diodes, LEDs, and diode rectification. Be sure to bring a flash drive for recording oscilloscope traces.
Diodes This week, we look at switching diodes, LEDs, and diode rectification. Be sure to bring a flash drive for recording oscilloscope traces. 1. Basic diode characteristics Build the circuit shown in
More informationLab 4: Analysis of the Stereo Amplifier
ECE 212 Spring 2010 Circuit Analysis II Names: Lab 4: Analysis of the Stereo Amplifier Objectives In this lab exercise you will use the power supply to power the stereo amplifier built in the previous
More information