Infrared cordless Headphone Amplifier
https://www.electronics-lab.com/project/infrared-cordless-headphone-amplifier/
Description Using this low cost Project one can reproduce AUDIO from TV without disturbing anyone. It does not use any wire between TV and HEADPHONE. In place of pair of wires it uses invisible Infrared light to transmit audio signals from TV to Headphone. Without using any lens a range of up to 6 meters […]
Three Channel Audio Mixer
https://www.electronics-lab.com/project/three-channel-audio-mixer-2/
Description Above schematic is for a three channel audio mixer. That will provide an overall gain of one between the output and each input channel. Each input channel includes a single 0.1uf capacitor and 100-Kilohms resistor to provide an output impedance of 100K. The number of input channels to this audio mixer can be increased […]
Active Bass & Tremble Controller
https://www.electronics-lab.com/project/active-bass-tremble-controller/
ACTIVE BASS TONE CONTROLLER circuit diagram It is very useful (and has Best Quality) for 1 -100watt AUDIO AMPLIFIERS
20W Audio Amplifier using LM1875
https://www.electronics-lab.com/project/20w-audio-amplifier-using-lm1875/
20W Audio Amplifier kit is based on LM1875 IC. Specifications Power supply – 48 VDC Output – 20 W, 4 Ω Very low distortion (THD – 0.015%), good channel separation and ripple rejection IC built-in thermal, short circuit protections Internal output protection diodes Terminal pins for connecting input Power Battery Terminal (PBT) for easy power […]
20W Bridge Audio Amplifier
https://www.electronics-lab.com/project/20w-bridge-audio-amplifier/
Description 20W Bridge Audio Amplifier project, based on the TDA2005 IC, The TDA 2005 IC is class B dual audio amplifier, specifically designed for car radio applications etc. Specifications: Power supply input : 18 VDC Output power : 20 W, 4 Ω IC built in Thermal Shut-down, Load dump voltage surge protected Terminal pins for […]
Stereo tape head preamplifier using LA3161
https://www.electronics-lab.com/project/stereo-tape-head-preamplifier-using-la3161/
The Stereo Tape Head Preamplifier kit is based on LA3161 IC from SANYO. Specifications Power supply – 9 ~ 12 VDC @ 20 mA Output power – upto 200 mW Input Resistance – 100 KΩ (Typ), Load Resistance – 10 KΩ (Typ) Low noise, good ripple rejection owing to the on-chip voltage regulator Berg pins […]
Tiny audio amplifier using LM386
https://www.electronics-lab.com/project/tiny-audio-amplifier-using-lm386/
The Tiny Audio Amplifier kit is a good choice for battery operation. It is based on LM386 IC. Specifications Power supply – 6 – 12 VDC Output power – 1 W, 8 Ohm The quiescent power drain is only 24 mW when operating from 6 VDC Self-centering output quiescent voltage Onboard PRESET to adjust […]
5000W Ultra Light – High Power Amplifier
https://www.electronics-lab.com/project/5000w-ultra-light-high-power-amplifier/
This circuit is of an 2x 2,500W RMS stereo amplifier, super-light and without switching-mode power supply. The circuit just shows a channel, and the power supply that it assists to the two channels. The audio circuit should be duplicated, but the power supply assists to the two channels without problems. A special care should be […]
2N3055 Power Amplifier
https://www.electronics-lab.com/project/2n3055-power-amplifier/
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, in this design the components have a big tolerance, so you can build it almost of the components, which you find at […]
Motorola Hi-Fi power amplifier
https://www.electronics-lab.com/project/motorola-hi-fi-power-amplifier/
This is a very simple, low cost, Hi-Fi quality power amplifier. You can build it 5 ways, like its shown in the table (from 20 W to 80 W RMS). Comments The first thing that you must do, is to measure the end transistors (T3 and T4) amplifying coefficient, the hfe or β. If […]