2x30W audio amplifier (STK465)
Completed STK465 is an amplifier of acoustic frequencies that offers qualitative output, using minimal exterior elements. Substantially he is one of big complet...
25W Mosfet audio amplifier
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 vari...
200W audio power amplifier
No description available....
60W Power Amplifier with 2N3055
Simple and low cost. The optimal supply voltage is around 50V, but this amp work from 30 to 60V. The maximal input voltage is around 0.8 - 1V. As you can see, i...
VHF TV Signal Amplifier
Many times we needed to strengthen a small signal in the region of VHF or FM. The preamplifier that to you we propose offers 20dB in all the region of VHF and i...
Video Distributor Amplifier CA3100
This circuit is useful to amplify and distribute video signals with low noise and without losses. The CA3100 is a fast opamp designed to amplify video signals. ...
15dB UHF TV Antenna Amplifier
This is an UHF band TV antenna preamplifier circuit With 15dB gain to build easily. It is formed based on BF180 UHF Transistor. The first stage is an band pass ...
Mini Audio Amplifier
This is a low watt audio amplifier with a different technique in design. The 1.8K resistor has been connected to output of the circuit instead of VCC line. The ...
LM390 Bass Amplifier
This circuit is a mono audio amplifier that will boost low frequencies as you see at the frequency response. The circuit is suitable for driving a subwoofer spe...
10 Watt Power Amplifier (TDA2030)
This simple 10 watts audio power amplifier is designed for home-brewed purpose. It is based on an Audio Power Amplifier IC that is called TDA2030. It is a monol...
20 Watt Audio Amplifier
This simple 20 watts audio power amplifier is designed for home-brewed purpose. The L1 should be able to handle a current up to 4A to drive speaker in full load...
TDA1554 / 22W Stereo Amplifier
Very simple and useful circuit for amplify the stereo signals .The circuit dissipates roughly 28 watts of heat, so a good heatsink is necessary. The chip should...
Electret Microphone Preamplifier
This circuit will be useful if you have an electret microphone that produces a low audio (sound) level and you want to connect it to an amplifier or something l...
40 Watt Audio power Amplifier LM3876
This Circuit is based on the LM3876. A 11-pin plastic package IC with high performance audio power amplifier, an output mute function which can be used to elimi...
Amplifier Thermal Protection
This project is really a mixture of ideas, some simple, and others even simpler. The system I have installed in my biamp unit is fan cooling. Once a preset te...
Class-A Power Amp
The capacitors needed for the power supply are massive to try to get rid of hum, and massive means expensive. The "improved" Zen is a little better, since it us...
Hi-Fi Headphone Amplifier
This design for a headphone amplifier arose after the purchase of commercial equipment with separate pre and power amplifiers without a headphone output. Its ad...
Amplifier Clipping Indicator
At some stage, we will all find ourselves pushing hi-fi equipment just a little too hard, and if lucky, will just find that the sound has become "dirty". If thi...
Amplifier Bridging
The primary advantage of this method of bridging is that no additional components are needed (which means that it is cheap), and there is no signal degradation ...
Headphone Amplifier
The amplifier is capable of delivering around 1.5W into 8 ohm headphones, and 2.2W into 32 ohms - this is vastly more than will ever be needed in practice. The ...