24W Audio Amplifier (Class A)
This is the circuit diagram of 24 Watt class A linear audio amplifier, built and tested by Marc Klynhans from…
Simple 3 Channels Mini Audio Mixer
This is the simple and low cost 3 channels mini audio mixer circuit diagram. This circuit supplied using 9V power…
35W Power Audio Amplifier based LM391
Here the 35W power audio amplifier circuit based on LM391. Inductor L1 is constituted by 20 coils of wire, with…
18W Audio Amplifier
This is the circuit diagram of 18W audio amplifier. The circuit is quite simple and inexpensive to built. It uses…
Diode Zener Tester
This is the circuit diagram of zener diode tester which tests zener diodes with breakdown voltages extending up to 120…
Active FM Booster
This is a simple low cost circuit of an active FM booster that can be used to amplify the FM…
Digital Variable Resistor / Potensiometer DS1669
The DS1669 is an electronic digital rheostat manufactured by Dallas Semiconductor. This component has a function similar to digital variable…
2 Way Speaker Box Design
This is 2 way speaker box design for audio system. I've used this design for my home audio system, the…
USB Power Booster for PC / Laptop
This is the circuit diagram of USB power booster, expecially to strength the power capability of USB port from PC…