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June 22, 2010
This design is based on the 18 Watt Audio Amplifier, and was developed mainly to satisfy the requests of correspondents unable to locate the TLE2141C chip. It uses the widespread NE5532 Dual IC but, obviously,... [more]
August 6, 2010
2 x 18W Hi-Fi Stereo Power Amplifier based around two TDA2030 ICs. It has good input sensitivity, low distortion, good operating stability and full protection against overloads and output short-circuits. It can be used as... [more]
circuit from:http://www.extremecircuits.net/2010/01/18w-18w-stereo-hi-fi-audio-amplifier.html
June 22, 2010
Can be directly connected to CD players, tuners and tape recorders. [more]
August 6, 2010
High Quality very simple unit, No need for a preamplifier [more]
circuit from:http://www.extremecircuits.net/2009/07/18watt-audio-amplifier.html
June 22, 2010
The 22 watt amp is easy to build, and very inexpensive. The circuit can be used as a booster in a car audio system, an amp for satellite speakers in a surround sound or home... [more]
August 6, 2010
This is a 25 Watt basic power amp that was designed to be (relatively) easy to build at a reasonable cost. It has better performance than the standard STK module amps that are used in... [more]
circuit from:http://www.extremecircuits.net/2009/07/25-watt-audio-amplifier-circuit.html
June 22, 2010
Can be directly connected to CD players, tuners and tape recorders. Simply add a 10K Log potentiometer (dual gang for stereo) and a switch to cope with the various sources you need. [more]
August 5, 2010
This amplifier was designed to be self-contained in a small loudspeaker box. It can be feed by Walkman, Mini-Disc, iPod and CD players, computers and similar devices fitted with line or headphone output. Of course,... [more]
circuit from:http://www.extremecircuits.net/2009/07/2watt-audio-amplifier.html
August 5, 2010
This solid-state push-pull single-ended Class A circuit is capable of providing a sound comparable to those valve amplifiers, delivering more output power (6.9W measured across a 8 Ohm loudspeaker cabinet load), less THD, higher input... [more]
circuit from:http://www.extremecircuits.net/2009/07/5-watt-class-audio-amplifier-circuit.html
June 22, 2010
The limitation of car supply voltage (12V) forces to convert the voltages to higher in order to power audio amplifiers. [more]
August 5, 2010
Designs for audio amplifiers with DC coupling to the load are not often encountered these days, even though they offer definite advantages. [more]
circuit from:http://www.extremecircuits.net/2010/05/dc-coupled-audio-amplifier.html
August 5, 2010
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% THD @ 1KHz at... [more]
circuit from:http://www.extremecircuits.net/2009/12/30-watt-audio-power-amplifier-schematic.html
August 5, 2010
It's based on a Philips class-H audio amplifier IC and can deliver 36W RMS OR 70W music power, all from a 13.8V supply. Our new Mighty Midget Amplifier can really pack a punch - around... [more]
August 5, 2010
These goals were achieved by using a discrete-components op-amp driving a BJT complementary common-emitter output stage into Class B operation. In this way, for small output currents, the output transistors are turned off, and the... [more]
circuit from:http://www.extremecircuits.net/2010/02/45-watt-class-b-audio-power-amplifier.html
August 5, 2010
The supply rails voltage was kept prudentially at the rather low value of + and - 40V. For those wishing to experiment, the supply rails voltage could be raised to + and - 50V maximum,... [more]
circuit from:http://www.extremecircuits.net/2010/01/60-watt-audio-power-amplifier-circuit.html
August 5, 2010
This small amplifier is constructed around the TDA2003 IC, capable of delivering 4Wrms at 4ohms. The TDA 2003 has improved performance with the same pin configuration as the TDA 2002. The additional features of TDA... [more]
circuit from:http://www.extremecircuits.net/2009/09/7-watt-audio-power-amplifier-circuit.html
August 5, 2010
Here is the schematic for an 8 watt audio power amplifier. This amp can be used as a simple booster, the heart of a more complicated amplifier or used as a guitar amp. It is... [more]
circuit from:http://www.extremecircuits.net/2009/12/8-watt-audio-power-amplifier-schematic.html
August 5, 2010
Using this low-cost project one can reproduce audio from TV without disturbing others. It does not use any wire connection between TV and Loud Speaker. In place of a pair of wires, it uses invisible... [more]
circuit from:http://www.extremecircuits.net/2009/12/low-power-wireless-audio-power.html
April 13, 2010
Afterwards the Modular preamplifier presentation good is I present also a simpler circuit in the manufacture but very good quality. And in this circuit the philosophy that follow is: simple is also better. As you... [more]
August 7, 2010
The TDA7294 amplifier module is a monolithic integrated circuit. It is intended for use as an audio class AB amplifier in hi-fi applications. It has a wide voltage range and output current capability, enabling it... [more]
April 13, 2010
The circuit is a preamplifier with digital regulation intensity of sound. He is separated in three departments. [more]
August 6, 2010
A small power amplifier, but with very good quality of sound. It combines a completed very good quality (NE5534), that has the possibility of control of low loads, high speed, low distortion and two transistors... [more]
April 13, 2010
This preamplifier is requirement result of many friends to give a high quality preamplifier, capable to drive high quality power amplifiers with good sound, it's not however difficult to making, it combines simplicity and handiness.... [more]
April 13, 2010
The preamplifier that appears in the figure is a completely symmetrical preamplifier, from the input as the exit and it works in Class A. It does not have somebody innovation, simply it uses good solutions,... [more]
April 13, 2010
The Electrocompaniet 2 Channel Audio Power Amplifier [more]
August 6, 2010
Here is a little audio amplifier similar to what you might find in a small transistor radio. The input stage is biased so that the supply voltage is divided equally across the two complimentary output... [more]
August 8, 2010
This circuit is design, in order to is heard the voice above the music. Useful for DJ, for small radio stations, for statements above the music, in shops etc. Also we can him use in... [more]
August 7, 2010
The amplifier's gain is nominally 20 dB. Its frequency response is determined primarily by the value of just a few components-primarily C1 and R1. The values of the schematic diagram provide a response of ±3.0... [more]
circuit from:http://www.extremecircuits.net/2009/07/audio-booster.html
April 13, 2010
This you can place in the MODULES of inputs any circuit you want, depending on the use that you intend the MIXER, the same is also for the number of input channels, that you will... [more]
August 6, 2010
Audio Note Conquest Power amp. with 300B [more]
August 8, 2010
A peak level indicator when a signal exceeds a certain maximum value. It can be quite useful, for instance, with tape recorders, mixing consoles etc. One of the most important requirements of a peak level... [more]
June 22, 2010
Using a single cable such as speaker wire or doorbell cable, this circuit can be remotely positioned, for example, at the bottom of a garden or garage, and used to detect all sound in that... [more]
June 5, 2010
If you work in the professional audio field, you need to use balanced lines for long signal runs to prevent hum and noise pick-up. This Balanced/Unbalanced Converter is really two projects in one. It can... [more]
circuit from:http://www.extremecircuits.net/2010/03/balanced-unbalanced-converter-for-audio.html
December 3, 2010
This simple circuit mixes two or more channels into one channel (eg. stereo into mono). The circuit can mix as many or as few channels as you like and consumes very little power. [more]
August 6, 2010
Improved 3 Transistor Audio Amp (80 milliwatt) [more]
May 14, 2010
This active splitter for laptop audio-out is powered from a USB and provides individual channel gain of 39 dB and individual volume control of a head-phone channel. The circuit uses two TDA2822M audio power amplifier... [more]
circuit from:http://www.extremecircuits.net/2009/12/laptop-audio-out-splitter-circuit.html
August 6, 2010
The example below illustrates using an op-amp as an audio amplifier for a simple intercom. A small 8 ohm speaker is used as a microphone which is coupled to the op-amp input through a 0.1uF... [more]
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