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Amplifier Circuits:  Power Circuits  Page 1a
Power Amplifiers:  #'s - E      F - Z
Amplifier -- Main Page  

Last Updated on: Friday, March 23, 2012 04:35 PM

 

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

20 Watt Class a Power Amplifier -  (schematic / Circuit design added 9/02)
20 Watt GaAs-FET Power on 2.3 GHz -  (circuit / schematic added 6/03)
20 Watt Power Amplifier -  This IC chip was designed specifically for use in power boosting applications in automobiles. It is self protecting against short circuits and thermal problems. In the bridge configuration shown it will deliver 20 watts of power into a 2 ohm speaker operating at 14.4 volts. [Randy Linscott, designer]
20 Watt Power Amplifier -  The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications....(added 04/03/02)
20 Watt/Channel Stereo Power Amplifier -  Based on the versatile LM1875 from National Semiconductor (circuit / schematic added 6/03)
2304 & 3456 MHz Power Amplifiers -  (electronic circuit added 4/05)
27MHz toy car Transmitter -  schematic only, L1=same as L4,  L2=15 turns, .5mm wire, 5mm diameter, L3=3.5 turns, .5mm wire, 5mm diameter] [Peter Jakab, Electrical Engineer, Engineer of Informatics]
30 Watt Power Amplifier -  Ultra-Low distortion30-Watt Power Amplifier (added 4/02)
300 Watt Subwoofer Power Amplifier -  (electronic circuit added 7/03)
4 In/1 Out Summing Power Amplifier  -  (circuit / schematic design added 6/06)
45W HEXFET Power Amplifier  -  An ideal solution to make a good, low cost power amplifier ….(electronic schematic added 11/08)
4W Amplifier -  I have recently included a page about AF amplifers for use with Homebrew rigs. In this I mentioned that I may include a practical one-watt circuit, complete with PCB foil and layout. Here it is, but I have taken the liberty of engineering it to provide 4-watts of AF output and with a frequency response almost suitable for Hi-Fi applications.... [from Harry Lythall's website]
55 Watt Originally 75W Power Amplifier -  (circuit / schematic added 6/03)
555 Amplifier -  The 555 can be used as an amplifier. It operates very similar to pulse-width modulation. The component values cause the 555 to oscillate at approx 66kHz and the speaker does not respond to this high frequency.  Instead it responds to the average CD value of the modulated output and demonstrates the concept of pulse-width modulation. The chip gets very hot and is only for brief demonstrations. 
60 Watt into 8 Ohms Power Amplifier -  A simple amp to build, uses commonly available parts and is stable and reliable (added 4/02)
60 Watt Power Amplifier  -  (schematic added 9/02)
60-100W Hi-Fi Power Amp -  100W into 4 or 8 ohms.  Has excellent performance, and is easy to build. (added 05/06/07)
60W Class-A Power Amp -  circuit is on last page.  There is one amplifier configuration that is universally accepted as the ideal for audio use: Class A operation. Many early amplifiers operated in Class A, but….(circuit added 04/05/06)
65W HEXFET Power Amplifier  -  A medium power amplifier that is characterized by a lot of good sound quality, but simultaneously is very simple in the construction. Him uses, enough time in my active loudspeakers. In his output stage exist the very good FET transistors, technology HEXFET,....(added 07/07/07)


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Power Amplifiers:  #'s - E      F - Z

 
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