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 […]
Amplifier of Acoustic Frequencies with Preamplifier
https://www.electronics-lab.com/project/amplifier-of-acoustic-frequencies-with-preamplifier/
Characteristics Input Voltage: 15V Output Power: 4,2Wrms @ 4Ohm Minimal input signal: 94mVp-p with preamplifier, 0,65Vp-p without the preamplifier Parts R1 2,2K R2 330K R3 4,7K – logarithmic potentiometer R4 330K R5 1K R6 1.5Ohm C1, C6 100nF polyester C2 100uF/25V electrolytic C3, C7 1uF/25V electrolytic C4 1000uF/25V electrolytic C5 10uF/25V electrolytic Q1 BC547 U1 TDA2002 LS1 speaker […]