30 Watt Audio Power Amplifier

Size: px
Start display at page:

Download "30 Watt Audio Power Amplifier"

Transcription

1 30 Watt Audio Power Amplifier Including Preamp, Tone Controls, Reg dc Power Supply, 18 Watt into 8 Ohm - 30W into 4 Ohm loads Amplifier Section Circuit diagram: Audio Power Amplifier Circuit Diagram This project was a sort of challenge: designing an audio amplifier capable of delivering a decent output power with a minimum parts count, without sacrificing quality. The Power Amplifier section employs only three transistors and a handful of resistors and capacitors in a shunt feedback configuration but can deliver more than 18W into 8 Ohm with 0.08% 1KHz at the onset of clipping 1W - 1KHz and 1W - 10KHz) and up to 30W into a 4 Ohm load. To obtain such a performance and to ensure overall stability of this very simple circuitry, a suitable regulated dc power supply is mandatory. This is not a snag because it also helps in keeping noise and hum of the preamp to very low levels and guarantees a predictable output power into different load impedance. Finally, as the amplifier requires only a single rail supply, a very good dc voltage regulator capable of supplying more than 2 40V can be implemented with a few parts also. Power Amplifier Parts: R1 = 2K2 1/4W Resistor R2 = 27K 1/4W Resistor R3 = 2K2 1/2W Trimmers Cermet R4 = 2K2 1/2W Trimmers Cermet R5 = 100R 1/4W Resistor R6 = 1K 1/4W Resistor R7 = 330R 1/4W Resistors R8 = 330R 1/4W Resistors C1 = 22µF 25V Electrolytic Capacitor C2 = 47pF 63V Polystyrene or Ceramic Capacitor C3 = 100µF 50V Electrolytic Capacitors C4 = 100µF 50V Electrolytic Capacitors C5 = 2200µF 50V Electrolytic Capacitor Q1 = BC550C 45V 100mA Low noise High gain NPN Transistor

2 Q2 = IRF V 14A N-Channel Hexfet Transistor (or MTP12N10) Q3 = IRF V 12A P-Channel Hexfet Transistor (or MTP12P10) Setting up the Power Amplifier: 1. The setup of this amplifier must be done carefully and with no haste: 2. Connect the Power Supply Unit (previously tested separately) to the Power Amplifier but not the Preamp: the input of the Power Amplifier must be left open. 3. Rotate the cursor of R4 fully towards Q1 Collector. 4. Set the cursor of R3 to about the middle of its travel. 5. Connect a suitable loudspeaker or a 8 Ohm 20W resistor to the amplifier output. 6. Connect a Multimeter, set to measure about 50V fsd, across the positive end of C5 and the negative ground. 7. Switch on the supply and rotate R3 very slowly in order to read about 23V on the Multimeter display. 8. Switch off the supply, disconnect the Multimeter and reconnect it, set to measure at least 1Amp fsd, in series to the positive supply (the possible use of a second Multimeter in this place will be very welcomed). 9. Switch on the supply and rotate R4 very slowly until a reading of about 120mA is displayed. 10. Check again the voltage at the positive end of C5 and readjust R3 if necessary. 11. If R3 was readjusted, R4 will surely require some readjustment. 12. Wait about 15 minutes, watch if the current is varying and readjust if necessary. 13. Please note that R3 and R4 are very sensitive: very small movements will cause rather high voltage or current variations, so be careful. 14. Those lucky enough to reach an oscilloscope and a 1KHz sine wave generator, can drive the amplifier to the maximum output power and adjust R3 in order to obtain a symmetrical clipping of the sine wave displayed. Pre-Amplifier Section: The Preamp sensitivity and overload margin were designed to cope with most modern music program sources like CD players, Tape recorders, ipods, Computer audio outputs, Tuners etc. The source selecting switches and input connectors are not shown and their number and arrangement are left to the constructor's choice. To obtain a very high input overload margin, the volume control was placed at the preamp input. After a unity gain, impedance converter stage (Q1) a negative-feedback Baxandall-type Bass and Treble tone control stage was added. As this stage must provide some gain (about 5.6 times) a very low noise, "bootstrapped" twotransistors circuitry with FET-input was implemented. This stage features also excellent THD figures up to 4V RMS output and a low output impedance, necessary to drive properly the Mini-MosFet Power Amplifier, but can also be used for other purposes.

3 Circuit diagram: Pre-Amplifier Circuit Diagram For Power Amplifier Preamplifier Parts: P1 = 50K - Log. Potentiometer P2 = 100K - Linear Potentiometers P3 = 100K - Linear Potentiometers (twin concentric-spindle dual gang for stereo) R1 = 220K - 1/4W Resistor R2 = 100K - 1/4W Resistor R3 = 2K7-1/4W Resistor R4 = 8K2-1/4W Resistors R5 = 8K2-1/4W Resistors R6 = 4K7-1/4W Resistor R7 = 2K2-1/4W Resistors R8 = 2K2-1/4W Resistors R9 = 2M2-1/4W Resistor R10 = 47K - 1/4W Resistor R11 = 47K - 1/4W Resistor R12 = 33K - 1/4W Resistor R13 = 2K2-1/4W Resistors R14 = 470R - 1/4W Resistor R15 = 10K - 1/4W Resistor R16 = 3K3-1/4W Resistor (See Notes) C1 = 470nF - 63V Polyester Capacitors C2 = 470nF - 63V Polyester Capacitors C3 = 47nF - 63V Polyester Capacitors C4 = 47nF - 63V Polyester Capacitors C5 = 6n8-63V Polyester Capacitors C6 = 6n8-63V Polyester Capacitors C7 = 10µF - 63V Electrolytic Capacitor C8 = 22µF - 25V Electrolytic Capacitors C9 = 470nF - 63V Polyester Capacitors C10 = 22µF - 25V Electrolytic Capacitors

4 C11 = 470µF - 25V Electrolytic Capacitor (See Notes) Q1 = BC550C - 45V 100mA Low noise High gain NPN Transistors Q2 = 2N General-purpose N-Channel FET Q3 = BC550C - 45V 100mA Low noise High gain NPN Transistors Power Supply Section: A very good and powerful Regulated Power Supply section was implemented by simply adding a PNP power transistor to the excellent LM317T adjustable regulator chip. In this way this circuit was able to deliver much more than the power required to drive two Mini-MosFet amplifiers to full output (at least 40V into 4 Ohm load) without any appreciable effort. Circuit diagram: Regulated Power Supply Circuit Diagram Power Supply Parts: R1 = 3R9-2W Resistor R2 = 22R - 1/4W Resistor R3 = 6K8-1/4W Resistor R4 = 220R - 1/4W Resistor R5 = 4K7-1/2W Resistor C1 = 4700µF - 50V Electrolytic Capacitor C2 = 100nF - 63V Polyester Capacitors C3 = 10µF - 63V Electrolytic Capacitor C4 = 220µF - 50V Electrolytic Capacitor C5 = 100nF - 63V Polyester Capacitors D1 = Diode bridge - 100V 4A D2 = 1N V 1A Diode D3 = LED - Any type and color SW2 = SPST - Mains switch IC1 = LM317T - 3-Terminal Adjustable Regulator PL1 = Male Mains plug with cord

5 Q1 = TIP42A - 60V 6A PNP Transistor T1 = 230V Primary, 35-36V (Center-tapped) Secondary, 50-75VA Mains transformer (See Notes) Notes: Q2 and Q3 in the Power Amplifier must be mounted each on a finned heatsink of at least 80x40x25mm. Q1 and IC1 in the Regulated Power Supply must be mounted on a finned heatsink of at least 45x40x17mm. A power Transformer having a secondary winding rated at 35-36V and 50VA (i.e. about 1.4Amp) is required if you intend to use Loudspeaker cabinets of 8 Ohm nominal impedance. To drive 4 Ohm loads at high power levels, a 70-75VA Transformer (2Amp at least) will be a better choice. These transformers are usually center tapped: the central lead will be obviously left open. For the stereo version of this project, R16 and C11 in the Preamp will be in common to both channels: therefore, only one item each is necessary. In this case, R16 must be a 1K5 1/2W resistor. The value of C11 will remain unchanged. Technical data: Output power: 18 Watt RMS into 8 Ohm (1KHz sine wave) - 30 Watt RMS into 4 Ohm Input sensitivity of the complete Amplifier: 160mV RMS for full output Power Amplifier Input sensitivity: 900mV RMS for full output Power Amplifier Frequency 1W RMS: flat from 40Hz to 20KHz, 30Hz, 20Hz Power Amplifier Total harmonic 1KHz: 100mW 0.04% 1W 0.04% 10W 0.06% 18W 0.08% Power Amplifier Total harmonic 100mW 0.02% 1W 0.02% 10W 0.05% 18W 0.12% Unconditionally stable on capacitive loads Preamp Maximum output voltage: 4V RMS Preamp Frequency response: flat from 20Hz to 20KHz Preamp Total harmonic 1KHz:

6 1V RMS 0.007% 3V RMS 0.035% Preamp Total harmonic 1V RMS 0.007% 3V RMS 0.02% Bass control frequency range referred to 1KHz: 40Hz Treble control frequency range referred to 1KHz: 20KHz

Minimalist Discrete Hi-Fi Preamp

Minimalist Discrete Hi-Fi Preamp Minimalist Discrete Hi-Fi Preamp Rod Elliott (ESP) Introduction A preamp designed for the minimalist, and having no frills at all is the design goal for this project. It is designed as a preamp for the

More information

VOLUME AND TONE CONTROL - PREAMPLIFIER K8084

VOLUME AND TONE CONTROL - PREAMPLIFIER K8084 VOLUME AND TONE CONTROL - PREAMPLIFIER K8084 When using one of our amplifiers (big or small), you always need a volume control and preferably also a tone control H8084IP-1 Features & specifications When

More information

DIY Function Generator XR2206

DIY Function Generator XR2206 DIY Function Generator XR2206 20Hz 100KHz http://radiohobbystore.com Components List: Resistors: R1, R2 1% Metal Film 5K1 R4 1% Metal Film 10K R5 1% Metal Film 3K R10 5% Carbon Film 10R R3, R9 Potentiometer

More information

EE43 43/100 Fall Final Project: 1: Audio Amplifier, Part Part II II. Part 2: Audio Amplifier. Lab Guide

EE43 43/100 Fall Final Project: 1: Audio Amplifier, Part Part II II. Part 2: Audio Amplifier. Lab Guide EE 3/00 EE FINAL PROJECT PROJECT:AN : AUDIO AUDIO AMPLIFIER AMPLIFIER Part : Audio Amplifier Lab Guide In this lab we re going to extend what you did last time. We re going to use your AC to DC converter

More information

Construction notes for the symmetrical 400 watt amplifier

Construction notes for the symmetrical 400 watt amplifier Construction notes for the symmetrical 400 watt amplifier Introduction The symmetrical amplifier is an update of one of my designs, which appeared in the Australian electronics magazine Silicon Chip in

More information

MA 5100 SERVICE INFORMATION PREAMP - AMPLIFIER. MclNTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK STARTING WITH SERIAL NO.

MA 5100 SERVICE INFORMATION PREAMP - AMPLIFIER. MclNTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK STARTING WITH SERIAL NO. PREAMP - AMPLIFIER SERVICE INFORMATION STARTING WITH SERIAL NO. 21HOO MclNTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK ELECTRICAL SPECIFICATIONS Power Output: 90 watts RMS continuous, 45

More information

audionet AMP 1 V2 User s Manual Stereo - Amplifier

audionet AMP 1 V2 User s Manual Stereo - Amplifier audionet AMP 1 V2 Stereo - Amplifier User s Manual 1 2 Contents 1 Preface... 4 1.1 Included... 5 1.2 Transport... 5 2 Overview control elements... 6 2.1 Front panel... 6 3 Overview connections... 7 3.1

More information

audionet 4 Channel Amplifier Owner's Manual

audionet 4 Channel Amplifier Owner's Manual audionet amp Iv 4 Channel Amplifier Owner's Manual Congratulations! For those in need of even more amplification we have engineered the AMP IV. The AMP IV is our power amplifier for multichannel applications

More information

60-100W Hi-Fi Power Amplifier. Rod Elliott (ESP) PCBs are available for this project. Click the image for details.

60-100W Hi-Fi Power Amplifier. Rod Elliott (ESP) PCBs are available for this project. Click the image for details. Page 1 of 6 Elliott Sound Products Project 3A Introduction 60-100W Hi-Fi Power Amplifier Rod Elliott (ESP) PCBs are available for this project. Click the image for details. Update - 24 Jul 2003. OnSemi

More information

Registration 3. Owners Record Setup 4. Unit Connections 6. Front Panel Controls 8. Remote Control 9. Unit Care Technology 10. Designer s Note 12.

Registration 3. Owners Record Setup 4. Unit Connections 6. Front Panel Controls 8. Remote Control 9. Unit Care Technology 10. Designer s Note 12. Registration 3. Owners Record Setup 4. Unit Connections 6. Front Panel Controls 8. Remote Control 9. Unit Care Technology 10. Designer s Note 12. Specifications 2 The model and serial numbers are located

More information

University 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 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 information

LM4610 Dual DC Operated Tone/Volume/Balance Circuit with National 3-D Sound

LM4610 Dual DC Operated Tone/Volume/Balance Circuit with National 3-D Sound LM4610 Dual DC Operated Tone/Volume/Balance Circuit with National 3-D Sound General Description The LM4610 is a DC controlled tone (bass/treble), volume and balance circuit for stereo applications in car

More information

MC2301. Features and Benefits. Promotional Highlights TUBE POWER AMPLIFIER MCINTOSH LABORATORY INC., 2 CHAMBERS STREET, BINGHAMTON, NEW YORK 13903

MC2301. Features and Benefits. Promotional Highlights TUBE POWER AMPLIFIER MCINTOSH LABORATORY INC., 2 CHAMBERS STREET, BINGHAMTON, NEW YORK 13903 MC2301 Product Preview Page 1 McIntosh Laboratory, Inc., Binghamton, NY 13903 Design Engineering Department PRODUCT PREVIEW MC2301 TUBE POWER AMPLIFIER Project 1336 Promotional Highlights 300 Watts Mono

More information

DIY: from vinyl to compact disk

DIY: from vinyl to compact disk AUDIO & HI-FI DIY: from vinyl to compact disk with a PC and sound card Nowadays, with the availability of personal computers and compact-disk (CD) writers, there is nothing in the way of transferring one

More information

Ibanez Tube Screamer 808

Ibanez Tube Screamer 808 History Ibanez Tube Screamer 808 The Ibanez Tube Screamer is an overdrive pedal. The most popular use of a tube screamer is to push a tube amp to make it overdrive more. The pedal has a characteristic

More information

Materials. Eight pin DIP socket 0.1 µf capacitor

Materials. Eight pin DIP socket 0.1 µf capacitor JOE GROELE Project Outline The goal of this project was to build a plasma speaker that will amplify an electric guitar sound. Build an audio oscillator circuit using an ordinary speaker Test speaker performance

More information

DEPARTMENT 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 02139 DEPARTMENT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE MASSACHUSETTS INSTITUTE OF TECHNOLOGY CAMBRIDGE, MASSACHUSETTS 02139 Spring Term 2007 6.101 Introductory Analog Electronics Laboratory Laboratory

More information

19'' Rack Mount 300 Watt Power Amplifier/ Mixer w/70v Output & Mic Talkover USER MANUAL

19'' Rack Mount 300 Watt Power Amplifier/ Mixer w/70v Output & Mic Talkover USER MANUAL 19'' Rack Mount 300 Watt Power Amplifier/ Mixer w/70v Output & Mic Talkover USER MANUAL Your new PYRAMID PA305 300 Watt P.A. Amplifier gives you the power and versatility you need in a professional sound

More information

OBSOLETE. Microphone Preamplifier with Variable Compression and Noise Gating SSM2165

OBSOLETE. Microphone Preamplifier with Variable Compression and Noise Gating SSM2165 a FEATURES Complete Microphone Conditioner in an 8-Lead Package Single +5 V Operation Preset Noise Gate Threshold Compression Ratio Set by External Resistor Automatic Limiting Feature Prevents ADC Overload

More information

Opamp Based Power Amplifier

Opamp Based Power Amplifier Introduction Opamp Based Power Amplifier Rohit Balkishan This is a contributed project from Rohit Balkishan, who has built it, and thought that it would make a nice simple project for others. This is a

More information

11. Audio Amp. LM386 Low Power Amplifier:

11. 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 information

Op Amp Booster Designs

Op Amp Booster Designs Op Amp Booster Designs Although modern integrated circuit operational amplifiers ease linear circuit design, IC processing limits amplifier output power. Many applications, however, require substantially

More information

7 Watt Audio Amplifier with TDA2003

7 Watt Audio Amplifier with TDA2003 7 Watt Audio Amplifier with TDA2003 Schematic diagram of a simple 7 watt audio amplifier using TDA2003 Amplifier IC. This is a good IC with many built in features like low harmonic distortion, short circuit

More information

The ROSE 80 CW Transceiver (Part 1 of 3)

The ROSE 80 CW Transceiver (Part 1 of 3) Build a 5 watt, 80 meter QRP CW Transceiver!!! Page 1 of 10 The ROSE 80 CW Transceiver (Part 1 of 3) Build a 5 watt, 80 meter QRP CW Transceiver!!! (Designed by N1HFX) A great deal of interest has been

More information

PB 700 PB 1000 PB 1100 PB 1500 PB 2600 PB 1200 PB 1700 PB 2200 PB 2700 USER'S MANUAL.

PB 700 PB 1000 PB 1100 PB 1500 PB 2600 PB 1200 PB 1700 PB 2200 PB 2700 USER'S MANUAL. PB 700 PB 1000 PB 1100 PB 1500 PB 2600 PB 1200 PB 1700 PB 2200 PB 2700 USER'S MANUAL www.pyramidcaraudio.com congratulations... on your purchase of a Pyramid America Series amplifier. This amplifier extends

More information

Analyzing the Dynaco Stereo 120 Power Amplifier

Analyzing the Dynaco Stereo 120 Power Amplifier Analyzing the Dynaco Stereo 120 Power Amplifier The Stereo 120 Power Amplifier came out around 1966. It was the first powerful (60 watts per channel) solid state amplifier in wide production. Each channel

More information

UMA 4300 Professional Series Installation Power Amplifer Owner s Manual

UMA 4300 Professional Series Installation Power Amplifer Owner s Manual 1 UMA 4300 Professional Series Installation Power Amplifer Owner s Manual UMA 4300 Professional Installation Power Amplifier ENGLISH The UMA 4300 is a high quality, commercial grade analog audio mixer/amplifier.

More information

Experiment 6: Biasing Circuitry

Experiment 6: Biasing Circuitry 1 Objective UNIVERSITY OF CALIFORNIA AT BERKELEY College of Engineering Department of Electrical Engineering and Computer Sciences EE105 Lab Experiments Experiment 6: Biasing Circuitry Setting up a biasing

More information

Marchand Electronics Inc.

Marchand Electronics Inc. Marchand Electronics Inc. Rochester, NY. TEL:(585) 423 0462 www.marchandelec.com Electronic Crossover XM1 XM1 ELECTRONIC CROSSOVER NETWORK In many high performance loudspeaker systems the individual loudspeaker

More information

The Aleph 5 is a stereo 60 watt audio power amplifier which operates in single-ended class A mode.

The Aleph 5 is a stereo 60 watt audio power amplifier which operates in single-ended class A mode. Pass Laboratories Aleph 5 Service Manual Rev 0 9/20/96 Aleph 5 Service Manual. The Aleph 5 is a stereo 60 watt audio power amplifier which operates in single-ended class A mode. The Aleph 5 has only two

More information

MODEL 3 MONO AMPLIFIER OWNER S MANUAL

MODEL 3 MONO AMPLIFIER OWNER S MANUAL MODEL 3 MONO AMPLIFIER OWNER S MANUAL TABLE OF CONTENTS Introduction Features Unpacking Instructions Installation * Space requirements * A.C. connections Input Impedance Selection Adjustable Gain Signal

More information

EUA6210 Output Capacitor-less 67mW Stereo Headphone Amplifier

EUA6210 Output Capacitor-less 67mW Stereo Headphone Amplifier Output Capacitor-less 67mW Stereo Headphone Amplifier DESCRIPTION The is an audio power amplifier primarily designed for headphone applications in portable device applications. It is capable of delivering

More information

VERSATILE AUDIO AGC CIRCUIT Dave Kenward G8AJN

VERSATILE AUDIO AGC CIRCUIT Dave Kenward G8AJN VERSATILE AUDIO AGC CIRCUIT Dave Kenward G8AJN Whilst we spend many happy hours perfecting our video signals, the audio often tends to be an afterthought. For our local repeater a finely adjustable compressor/limiter

More information

WESTREX RA-1712 PHOTOGRAPHIC SOUND RECORD ELECTRONICS

WESTREX RA-1712 PHOTOGRAPHIC SOUND RECORD ELECTRONICS INTRODUCTION The RA-1712 solid state Record Electronics is an integrated system for recording photographic sound tracks on a Westrex photographic sound recorder. It accepts a 600Ω input signal level from

More information

LM391 Audio Power Driver

LM391 Audio Power Driver LM391 Audio Power Driver General Description The LM391 audio power driver is designed to drive external power transistors in 10 to 100 watt power amplifier designs High power supply voltage operation and

More information

Operational Amplifiers

Operational Amplifiers Operational Amplifiers Reading Horowitz & Hill handout Notes, Chapter 9 Introduction and Objective In this lab we will examine op-amps. We will look at a few of their vast number of uses and also investigate

More information

A hi-fi system begins with the source and ends with the loudspeakers.

A hi-fi system begins with the source and ends with the loudspeakers. A hi-fi system begins with the source and ends with the loudspeakers. >> Any information lost at the source can never be recovered by a subsequent component in the system. >> No matter how good the amplification,

More information

Low Cost, General Purpose High Speed JFET Amplifier AD825

Low Cost, General Purpose High Speed JFET Amplifier AD825 a FEATURES High Speed 41 MHz, 3 db Bandwidth 125 V/ s Slew Rate 8 ns Settling Time Input Bias Current of 2 pa and Noise Current of 1 fa/ Hz Input Voltage Noise of 12 nv/ Hz Fully Specified Power Supplies:

More information

Burning Amp 2. by Nelson Pass. Introduction. Concept

Burning Amp 2. by Nelson Pass. Introduction. Concept Burning Amp 2 by Nelson Pass Introduction In Burning Amp 1 we examined an amplifier circuit designed to complement the hardware we gave away to some attendees at last October's Burning Amp Festival in

More information

Calibration Techniques for the Home Lab

Calibration Techniques for the Home Lab Calibration Techniques for the Home Lab Jacques Audet VE2AZX jacaudet@videotron.ca Web: ve2azx.net September 2018 ve2azx.net 1 Summary - Using a reference multimeter as a calibrator for less accurate instruments.

More information

USO RESTRITO. Introduction to the Six Basic Audio Measurements. About this Technote. 1: Device Under Test and Signal Path. DUTs

USO RESTRITO. Introduction to the Six Basic Audio Measurements. About this Technote. 1: Device Under Test and Signal Path. DUTs USO RESTRITO A p p l i c a t i o n a n d T e c h n i c a l S u p p o r t f o r A u d i o P r e c i s i o n U s e r s T E C H N O T E TN104 2700 Series ATS-2 APx500 Series Introduction to the Six Basic

More information

[Q] DEFINE AUDIO AMPLIFIER. STATE ITS TYPE. DRAW ITS FREQUENCY RESPONSE CURVE.

[Q] DEFINE AUDIO AMPLIFIER. STATE ITS TYPE. DRAW ITS FREQUENCY RESPONSE CURVE. TOPIC : HI FI AUDIO AMPLIFIER/ AUDIO SYSTEMS INTRODUCTION TO AMPLIFIERS: MONO, STEREO DIFFERENCE BETWEEN STEREO AMPLIFIER AND MONO AMPLIFIER. [Q] DEFINE AUDIO AMPLIFIER. STATE ITS TYPE. DRAW ITS FREQUENCY

More information

PartIIILectures. Multistage Amplifiers

PartIIILectures. Multistage Amplifiers University of missan Electronic II, Second year 2015-2016 PartIIILectures Assistant Lecture: 1 Multistage and Compound Amplifiers Basic Definitions: 1- Gain of Multistage Amplifier: Fig.(1-1) A general

More information

G6ALU 20W FET PA Construction Information

G6ALU 20W FET PA Construction Information G6ALU 20W FET PA Construction Information The requirement This amplifier was designed specifically to complement the Pic-A-Star transceiver developed by Peter Rhodes G3XJP. From the band pass filter an

More information

Final Project Stereo Audio Amplifier Final Report

Final Project Stereo Audio Amplifier Final Report The George Washington University School of Engineering and Applied Science Department of Electrical and Computer Engineering Final Project Stereo Audio Amplifier Final Report Daniel S. Boucher ECE 20-32,

More information

MAINTENANCE MANUAL AUDIO AMPLIFIER BOARD 19D904025G1 (MDR) AUDIO AMPLIFIER BOARD 19D904025G2 (MDX)

MAINTENANCE MANUAL AUDIO AMPLIFIER BOARD 19D904025G1 (MDR) AUDIO AMPLIFIER BOARD 19D904025G2 (MDX) A MAINTENANCE MANUAL AUDIO AMPLIFIER BOARD 19D904025G1 (MDR) AUDIO AMPLIFIER BOARD 19D904025G2 (MDX) TABLE OF CONTENTS DESCRIPTION............................................... Page Front Cover CIRCUIT

More information

SPECIFICATIONS: Subcarrier Frequency 5.5MHz adjustable, FM Modulated +/- 50KHz. 2nd 11MHz >40dB down from 5.5MHz

SPECIFICATIONS: Subcarrier Frequency 5.5MHz adjustable, FM Modulated +/- 50KHz. 2nd 11MHz >40dB down from 5.5MHz Mini-kits AUDIO / SUBCARRIER KIT EME75 Version4 SPECIFICATIONS: Subcarrier Frequency 5.5MHz adjustable, FM Modulated +/- 50KHz Subcarrier Output 1.5v p-p Output @ 5.5MHz DESCRIPTION & FEATURES: The Notes

More information

AN W 2 (18 V, 8 Ω) Power Amplifier with Variable Audio Output and Volume Control. ICs for Audio Common Use. Overview. Features.

AN W 2 (18 V, 8 Ω) Power Amplifier with Variable Audio Output and Volume Control. ICs for Audio Common Use. Overview. Features. ICs for Audio Common Use. W 2 (8 V, 8 Ω) Power Amplifier with Variable Audio Output and Volume Control Overview The is a monolithic integrated circuit designed for. W (8 V, 8 Ω) output audio power amplifier.

More information

Experiment 6: Biasing Circuitry

Experiment 6: Biasing Circuitry 1 Objective UNIVERSITY OF CALIFORNIA AT BERKELEY College of Engineering Department of Electrical Engineering and Computer Sciences EE105 Lab Experiments Experiment 6: Biasing Circuitry Setting up a biasing

More information

El-Cheapo - A Really Simple Power Amplifier

El-Cheapo - A Really Simple Power Amplifier El-Cheapo - A Really Simple Power Amplifier Rod Elliott - ESP (Semi-Original Design) "Semi-Original Design" - What is that supposed to mean? Well, many years ago, there was an amplifier circuit in a magazine

More information

A 3-STAGE 5W AUDIO AMPLIFIER

A 3-STAGE 5W AUDIO AMPLIFIER ECE 2201 PRELAB 7x BJT APPLICATIONS A 3-STAGE 5W AUDIO AMPLIFIER UTILIZING NEGATIVE FEEDBACK INTRODUCTION Figure P7-1 shows a simplified schematic of a 3-stage audio amplifier utilizing three BJT amplifier

More information

Mixing Amplifier MA 247MR

Mixing Amplifier MA 247MR MA 247MR Mixing Amplifier Less is more. As the CD is losing more and more ground, there is no more CD-player in the MA247MR. No moving parts, higher reliability. Something of a legend already, this 240

More information

HAMTRONICS TB901 FM EXCITER INSTALLATION, OPERATION, & MAINTENANCE

HAMTRONICS TB901 FM EXCITER INSTALLATION, OPERATION, & MAINTENANCE HAMTRONICS TB901 FM EXCITER INSTALLATION, OPERATION, & MAINTENANCE GENERAL INFORMATION. The TB901 is a single-channel low power fm transmitter (exciter) designed to provide 300-600 milliwatts continuous

More information

Figure 2 shows the actual schematic for the power supply and one channel.

Figure 2 shows the actual schematic for the power supply and one channel. Pass Laboratories Aleph 3 Service Manual rev 0 2/1/96 Aleph 3 Service Manual. The Aleph 3 is a stereo 30 watt per channel audio power amplifier which operates in single-ended class A mode. The Aleph 3

More information

A 120 watt Solid State Amp

A 120 watt Solid State Amp A 120 watt Solid State Amp Introduction Again an amplifier at a time when nice class-d amps (Hypex) are available? After the absolute success of the SSA35 (it measures and sounds so good) I present its

More information

3 Circuit Theory. 3.2 Balanced Gain Stage (BGS) Input to the amplifier is balanced. The shield is isolated

3 Circuit Theory. 3.2 Balanced Gain Stage (BGS) Input to the amplifier is balanced. The shield is isolated Rev. D CE Series Power Amplifier Service Manual 3 Circuit Theory 3.0 Overview This section of the manual explains the general operation of the CE power amplifier. Topics covered include Front End Operation,

More information

AN W 2 (18 V, 8 Ω) Power Amplifier with Mute Function and Volume Control. ICs for Audio Common Use. Overview. Features.

AN W 2 (18 V, 8 Ω) Power Amplifier with Mute Function and Volume Control. ICs for Audio Common Use. Overview. Features. . W 2 (8 V, 8 Ω) Power Amplifier with Mute Function and Volume Control Overview The is a monolithic integrated circuit designed for. W (8 V, 8 Ω) output audio power amplifier. It is a dual channel SEPP

More information

K8066 3W MONO AMPLIFIER. Specifications

K8066 3W MONO AMPLIFIER. Specifications Total solder points: 34 Difficulty level: beginner 1 2 3 4 5 advanced 3W MONO AMPLIFIER K8066 Small but powerful amplifier suits a wide range of applications. Specifications Output power : 3Wrms (4-8 ohm,

More information

GOLDMUND MIMESIS SRM2.3 MONO AMPLIFIER

GOLDMUND MIMESIS SRM2.3 MONO AMPLIFIER GOLDMUND MIMESIS SRM2.3 MONO AMPLIFIER 1 GOLDMUND MIMESIS SRM2.3 MONO AMPLIFIER USER MANUAL ATTENTION : No connection or manipulation must be done before reading those instructions. Damage to the amplifier

More information

10-channel Power Amplifier Construction. The 10-channel amplifier contains the following amplification modules: 7 x 50Watt/8ohm + 3 x 100Watt/4ohm.

10-channel Power Amplifier Construction. The 10-channel amplifier contains the following amplification modules: 7 x 50Watt/8ohm + 3 x 100Watt/4ohm. 10-channel Power Amplifier Construction The 10-channel amplifier contains the following amplification modules: 7 x 50Watt/8ohm + 3 x 100Watt/4ohm. The easiest to assemble were the 50Watt/8ohm modules,

More information

UNISONIC TECHNOLOGIES CO.,LTD.

UNISONIC TECHNOLOGIES CO.,LTD. UNISONIC TECHNOLOGIES CO.,LTD. STEREO AUDIO AMPLIFIER DESCRIPTION The UTC is a monolithic integrated audio amplifier in a 6-pin plastic dual in line package. It is designed for portable cassette players

More information

transformer rectifiers

transformer rectifiers Power supply mini-project This week, we finish up 201 lab with a short mini-project. We will build a bipolar power supply and use it to power a simple amplifier circuit. 1. power supply block diagram Figure

More information

MAX Series Bass Amplifiers

MAX Series Bass Amplifiers MAX Series Bass Amplifiers Operating Manual www.peavey.com FCC Compliancy Statement This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device

More information

INTEGRATED CIRCUITS DATA SHEET. TDA1074A Dual tandem electronic potentiometer circuit. Product specification File under Integrated Circuits, IC01

INTEGRATED CIRCUITS DATA SHEET. TDA1074A Dual tandem electronic potentiometer circuit. Product specification File under Integrated Circuits, IC01 INTEGRATED CIRCUITS DATA SHEET File under Integrated Circuits, IC01 December 1982 GENERAL DESCRIPTION The is a monolithic integrated circuit designed for use as volume and tone control circuit in stereo

More information

Trace Elliot Elf Bass Instrument Amplifier

Trace Elliot Elf Bass Instrument Amplifier Trace Elliot Elf Bass Instrument Amplifier Owner s Manual FCC Compliancy Statement This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device

More information

The Aleph 2 is a monoblock 100 watt audio power amplifier which operates in single-ended class A mode.

The Aleph 2 is a monoblock 100 watt audio power amplifier which operates in single-ended class A mode. Pass Laboratories Aleph 2 Service Manual Rev 0 2/1/96 Aleph 2 Service Manual. The Aleph 2 is a monoblock 100 watt audio power amplifier which operates in single-ended class A mode. The Aleph 2 has only

More information

TOA 900 SERIES POWER AMPLIFIER P-924A

TOA 900 SERIES POWER AMPLIFIER P-924A Operation Instruction Manual TOA 900 SERIES POWER AMPLIFIER P-924A Features General Descriptions 1 Wide frequency response; 20 20,000 Hz, ±1dB 2 Low distortion and noise level 3 Excellent output regulation

More information

TOA NEW 900 SERIES MIXER POWER AMPLIFIER A-901A. General Description. TOA Corporation. Operation Instruction Manual

TOA NEW 900 SERIES MIXER POWER AMPLIFIER A-901A. General Description. TOA Corporation. Operation Instruction Manual Operation Instruction Manual TOA NEW 900 SERIES MIXER POWER AMPLIFIER A-901A Features 1 3-channel mixer power amplifier 2 Wide frequency response; 20 20,000 Hz, ±1dB 3 Low distortion and noise level 4

More information

Audio Test Oscillator

Audio Test Oscillator Audio Test Oscillator Design By Rod Elliott - ESP Introduction As a piece of test equipment, an audio oscillator has to be considered essential for anyone working in with hi-fi gear. Together with an audio

More information

Stereo Tone Controller

Stereo Tone Controller Stereo Tone Controller 1. Objective In this project, you get to design a stereo tone-controller. In other words, the circuit will amplify the base and/or treble for a two-channel stereo system. 2. Prelab

More information

MAINTENANCE MANUAL AUDIO MATRIX BOARD P29/

MAINTENANCE MANUAL AUDIO MATRIX BOARD P29/ MAINTENANCE MANUAL AUDIO MATRIX BOARD P29/5000056000 TABLE OF CONTENTS Page DESCRIPTION................................................ Front Cover CIRCUIT ANALYSIS.............................................

More information

Electronics I. laboratory measurement guide

Electronics I. laboratory measurement guide Electronics I. laboratory measurement guide Andras Meszaros, Mark Horvath 2017.02.27. 4. Measurement: Bipolar transistor current generator and amplifiers These measurements will use a single (asymmetric)

More information

SERVICE MANUAL. Subwoofer Amplifier Model: SW12-I SW15-I KLIPSCH, INC.

SERVICE MANUAL. Subwoofer Amplifier Model: SW12-I SW15-I KLIPSCH, INC. SERVICE MANUAL Subwoofer Amplifier Model: SW12-I SW15-I KLIPSCH, INC. TABLE OF CONTENTS SPECIFICATIONS...2 Model: SW12-I...2 Model: SW15-I...2 THEORY OF OPERATION... 3 INPUTS... 3 SIGNAL CONDITIONING...

More information

FMR611S SUBCARRIER DEMODULATOR

FMR611S SUBCARRIER DEMODULATOR ALL ENGINEERING DESIGNS, DRAWINGS AND DATA CONTAINED HEREIN ARE PROPRIETARY AND MAY NOT BE REPRODUCED, COPIED OR OTHERWISE USED WITHOUT WRITTEN AUTHORIZATION FMR611S SUBCARRIER DEMODULATOR INSTRUCTION

More information

AN W 2 (18 V, 8 Ω) Power Amplifier with Mute Function and Volume Control. ICs for Audio Common Use. Overview. Features.

AN W 2 (18 V, 8 Ω) Power Amplifier with Mute Function and Volume Control. ICs for Audio Common Use. Overview. Features. 4.0 W 2 (8 V, 8 Ω) Power Amplifier with Mute Function and Volume Control Overview The is a monolithic integrated circuit designed for 4.0 W (8 V, 8 Ω) output audio power amplifier. It is a dual channel

More information

LM150/LM350A/LM350 3-Amp Adjustable Regulators

LM150/LM350A/LM350 3-Amp Adjustable Regulators LM150/LM350A/LM350 3-Amp Adjustable Regulators General Description The LM150 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output

More information

Ultra 4B SE Special Edition. Stereo Phono/Line Preamplifier

Ultra 4B SE Special Edition. Stereo Phono/Line Preamplifier Modular Series Ultra B SE Special Edition Stereo Phono/Line Preamplifier User s Manual Phono Line Line Balance Volume Mapletree Audio Design Ultra B SE Stereo Preamplifier Rev. Feb. / Mapletree Audio Design

More information

DVM98. True RMS Digital Multimeter. 1 Safety information. 1.1 Preliminary. 1.2 During use

DVM98. True RMS Digital Multimeter. 1 Safety information. 1.1 Preliminary. 1.2 During use True RMS Digital Multimeter DVM98 1 Safety information This multimeter has been designed according to IEC - 1010 concerning electronic measuring instruments with an overvoltage category (CAT II) and pollution

More information

UNISONIC TECHNOLOGIES CO.,LTD. TEA2025

UNISONIC TECHNOLOGIES CO.,LTD. TEA2025 UNISONIC TECHNOLOGIES CO.,LTD. TEA05 STEREO AUDIO AMPLIFIER DESCRIPTION The UTC TEA05 is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package. It is designed for portable cassette

More information

Distributed by: www.jameco.com 1-800-831-4242 The content and copyrights of the attached material are the property of its owner. LM138/LM338 5-Amp Adjustable Regulators General Description The LM138 series

More information

Operating Instruction Manual ELECTRONIC MUSIC AMPLIFICATION SYSTEM. Model KD-1. Toa Electric Co., Ltd. KOBE, JAPAN

Operating Instruction Manual ELECTRONIC MUSIC AMPLIFICATION SYSTEM. Model KD-1. Toa Electric Co., Ltd. KOBE, JAPAN Operating Instruction Manual ELECTRONIC MUSIC AMPLIFICATION SYSTEM Model KD-1 Toa Electric Co., Ltd. KOBE, JAPAN Contents Precautions... 1 General Description... 2 Features... 2 Front Panel: Names of components

More information

audionet amp II G2 Owner's Manual Mono - Amplifier

audionet amp II G2 Owner's Manual Mono - Amplifier audionet amp II G2 Mono - Amplifier Owner's Manual Owner's manual The Audionet-Team would like to congratulate you to purchasing the Audionet AMP II G2! Your Audionet AMP II G2 is designed for absolutely

More information

Full FET Class AB Amplifier

Full FET Class AB Amplifier Full FET Class AB Amplifier INTRODUCTION & FEATURES... 2 FEATURES & CONTROLS... 3-4 specification... 5 installation & precautions... 5 SYSTEM WIRING...6-13 2channel SYSTEM WIRING...6-8 4channel SYSTEM

More information

HOM rev. new Heathkit of the Month #74: by Bob Eckweiler, AF6C STEREO HI-FI EQUIPMENT. Heath of the Month #74 - Model Description

HOM rev. new Heathkit of the Month #74: by Bob Eckweiler, AF6C STEREO HI-FI EQUIPMENT. Heath of the Month #74 - Model Description Heathkit of the Month #74: by Bob Eckweiler, AF6C STEREO HI-FI EQUIPMENT Heathkit AA-14 Solid-State Stereo Amplifier Introduction: Heathkit of the Month #63 covered the AJ-14 Stereo FM Tuner. For many

More information

ECE 310L : LAB 9. Fall 2012 (Hay)

ECE 310L : LAB 9. Fall 2012 (Hay) ECE 310L : LAB 9 PRELAB ASSIGNMENT: Read the lab assignment in its entirety. 1. For the circuit shown in Figure 3, compute a value for R1 that will result in a 1N5230B zener diode current of approximately

More information

THE HONG KONG POLYTECHNIC UNIVERSITY EN107/1 Department of Electronic and Information Engineering. EN107: OCL Class AB Power Amplifier Objective

THE HONG KONG POLYTECHNIC UNIVERSITY EN107/1 Department of Electronic and Information Engineering. EN107: OCL Class AB Power Amplifier Objective THE HONG KONG POLYTECHNIC UNIVERSITY EN107/1 EN107: OCL Class AB Power Amplifier Objective 1. To study the circuit performance of an OCL amplifier. 2. To study the effects of biasing on cross-over distortion

More information

Learning Objectives:

Learning Objectives: Learning Objectives: At the end of this topic you will be able to; recall the conditions for maximum voltage transfer between sub-systems; analyse a unity gain op-amp voltage follower, used in impedance

More information

Ear+ Purist HD. Ear+ HD High Definition Stereo Headphone Amplifier

Ear+ Purist HD. Ear+ HD High Definition Stereo Headphone Amplifier Ear Purist HD Ear HD High Definition Stereo Headphone Amplifier 2AX7 Users' Manual ev Oct. 7/3 Mapletree Audio Design loyd Peppard.., Seeley's Bay, Ontario, Canada, K0H 2N0 (63) 387-3830 www.mapletreeaudio.com

More information

LA W 2-Channel AF Power Amplifier

LA W 2-Channel AF Power Amplifier Ordering number:enn1164c Monolithic Linear IC LA4500 5.3W 2-Channel AF Power Amplifier Features Low idling current (20mA/2 channels) enabling prolonged battery life. Less dependence of idling current on

More information

An Electronic Variable Load by Dave Chute, KG4BZW

An Electronic Variable Load by Dave Chute, KG4BZW EDITOR: GEOFF HAINES, N1GY Published Quarterly N1GY@ARRL.NET Summer Edition FROM THE EDITOR: Once again I am happy to report that we have several great articles in the Summer Edition of The WCF Experimenter.

More information

Homework Assignment 13

Homework Assignment 13 Question 1 Short Takes 2 points each. Homework Assignment 13 1. Classify the type of feedback uses in the circuit below (i.e., shunt-shunt, series-shunt, ) 2. True or false: an engineer uses series-shunt

More information

Phono3. Two Channel Analog RIAA MM/MC Pre-Amplifier

Phono3. Two Channel Analog RIAA MM/MC Pre-Amplifier User's Guide Phono3 e.one Series Two Channel Analog RIAA MM/MC Pre-Amplifier Bel Canto Design, LTD. 221 North First Street Minneapolis, MN 55401 Phone: (612) 317.4550 Fax: (612) 359.9358 www.belcantodesign.com

More information

H BRIDGE INVERTER. Vdc. Corresponding values of Va and Vb A+ closed, Va = Vdc A closed, Va = 0 B+ closed, Vb = Vdc B closed, Vb = 0 A+ B+ A B

H BRIDGE INVERTER. Vdc. Corresponding values of Va and Vb A+ closed, Va = Vdc A closed, Va = 0 B+ closed, Vb = Vdc B closed, Vb = 0 A+ B+ A B 1. Introduction How do we make AC from DC? Answer the H-Bridge Inverter. H BRIDGE INVERTER Vdc A+ B+ Switching rules Either A+ or A is always closed, but never at the same time * Either B+ or B is always

More information

Congratulations on your purchase of a Lanzar EVOLUTION amplifier. You have purchased a quality product designed

Congratulations on your purchase of a Lanzar EVOLUTION amplifier. You have purchased a quality product designed Congratulations on your purchase of a Lanzar EVOLUTION amplifier. You have purchased a quality product designed and engineered to give you many years of uncompromised musical service. EVOLUTION amplifiers

More information

Model SR554 Transformer Preamplifier

Model SR554 Transformer Preamplifier Model SR554 Transformer Preamplifier Model SR554 Transformer Preamplifier 1290-D Reamwood Avenue Sunnyvale, California 94089 Phone: (408) 744-9040 Fax: (408) 744-9049 email: info@thinksrs.com www.thinksrs.com

More information

AN174 Applications for compandors SA570/571 SA571

AN174 Applications for compandors SA570/571 SA571 RF COMMUNICATIONS PRODUCTS Applications for compandors SA570/571 SA571 1997 Aug 20 Philips Semiconductors APPLICATIONS The following circuits will illustrate some of the wide variety of applications for

More information

Experiment No. 6. Audio Tone Control Amplifier

Experiment No. 6. Audio Tone Control Amplifier Experiment No. 6. Audio Tone Control Amplifier By: Prof. Gabriel M. Rebeiz The University of Michigan EECS Dept. Ann Arbor, Michigan Goal: The goal of Experiment #6 is to build and test a tone control

More information

LM W Audio Power Amplifier

LM W Audio Power Amplifier LM388 1 5W Audio Power Amplifier General Description The LM388 is an audio amplifier designed for use in medium power consumer applications The gain is internally set to 20 to keep external part count

More information

LM831 Low Voltage Audio Power Amplifier

LM831 Low Voltage Audio Power Amplifier LM831 Low Voltage Audio Power Amplifier General Description The LM831 is a dual audio power amplifier optimized for very low voltage operation The LM831 has two independent amplifiers giving stereo or

More information

Sampling and Reconstruction

Sampling and Reconstruction Experiment 10 Sampling and Reconstruction In this experiment we shall learn how an analog signal can be sampled in the time domain and then how the same samples can be used to reconstruct the original

More information