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Posts Tagged ‘audio amplifier’

LM3886 based stereo amplifier

Tuesday, November 27th, 2018

Mark Rehorst blogged about his LM3886 based stereo amplifier build: Several years ago, National Semiconductor came out with some very high performance, easy to use audio power amplifier ICs.  I was in need of an extra amplifier so I could biamp some of my home-built electrostatic loudspeakers so I tried...

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How to make a simple 1 watt audio amplifier (LM386 based)

Friday, January 20th, 2017

A tutorial on making an LM386 audio amplifier circuit from Afrotechmods: A tutorial on how to use the popular LM386 class AB audio amplifier IC to build a simple mono 1 watt audio amplifier. It costs less than $3 in parts! There is also a brief discussion of how to...

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A simple push-pull audio amplifier using russian rod tubes and power transformers

Tuesday, January 3rd, 2017

KA7OEI blogged about a simple push-pull audio amplifier using russian rod tubes and power transformers: Many years ago I'd read about the type of tube that is now often referred to as a "Gammatron" - a "gridless" amplifier tube of the 1920s, so-designed to get around patents that included what would...

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Mullard 3-3 amplifier project (part 1)

Wednesday, January 13th, 2016

Dilshan Jayakody has published a new build, a Mullard 3-3 amplifier project: Mullard 3-3 is quiet popular 3W tube amplifier introduced by Mullard Ltd in 1956. A schematic and design detail of this amplifier is available in "Mullard Circuits for Audio Amplifiers" book and in National Valve Museum article. This amplifier is...

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Digitally controlled 2.1 channel analog audio power amplifier

Monday, October 13th, 2014

Dilshan Jayakody  writes: This article introduces high quality digitally controlled 2.1 channel analog audio power amplifier system. This project is mainly based on TDA7377 AF power amplifier and PIC18F452 8bit microcontroller. Basic features of this receiver are 2 × 6W + 20W audio output power, ±14dB bass and treble controls,...

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LM386 low voltage audio power amplifier

Monday, July 21st, 2014

Zx Lee published a low voltage audio amplifier build: Today, I am going to share on how you can make a low voltage audio amplifier. For this project, I am using LM 386 Audio Amplifier, which is commonly used among electronics hobbyist. I will break the article into a few sections. First,...

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6AS5 and 6N2P vacuum tube base guitar amplifier

Monday, July 14th, 2014

Another Dilshan Jayakody's cool project, a vacuum tube base amplifier project based on 6AS5 pentode and 6N2P dual triode: This is our first vacuum tube base amplifier project and this project is based on 6AS5 pentode and 6N2P dual triode. Schematic of this project is not designed by us and we got...

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Digital audio amplifier with PLL synthesized FM radio

Wednesday, June 11th, 2014

Another open source hardware project by Dilshan Jayakody the digital audio amplifier with PLL synthesized FM radio: This is high quality stereo digital audio amplifier with PLL synthesized FM radio receiver. Some of the high level specifications of this receiver are listed in below: Audio output power: 4W + 4W (with 8ohm speakers)...

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Posted in AVR, digital radio data, open source | 2 Comments »

Smart audio box

Friday, June 7th, 2013

Dilshan Jayakody has written an article about his open hardware project known as Smart Audio Box (SAB): Smart Audio Box (SAB) is microprocessor controlled audio switch and amplifier system, which is specifically design for audio composers and for audio engineers. SAB consist of 4 high impedance stereo inputs and two...

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Amplifier design articles and engineering stuff

Tuesday, November 16th, 2010

This site is loaded with audio amplifier design articles and assorted weird engineering stuff. It can use up a lot of your time. Check out the amplifier institute and the Museum of RetroTechnology. Thanks McZ!

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