Connection Tester

55 years ago

Here the low resistance connection tester which can be used as cable or wire tester, soldered joints and other types…

1.5W Audio Amplifier with IC SSM2211

55 years ago

This is 1.5W audio amplifier circuit design based on wide bandwidth, low distortion power IC SSM2211 from Analog Devices. This…

Adjustable Regulated Battery Charger

55 years ago

This battery charger circuit is regulated and adjustable to make this circuit able to charge the mosto NiCAD battery. This…

CD/DVD/Bluray-Disk Drives Troubleshooting and Repair Tutorial

55 years ago

This is the CD Drives troubleshooting and repair tutorial for your electronic service reference. It should be work and also…

24W Audio Amplifier (Class A)

55 years ago

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

55 years ago

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

55 years ago

Here the 35W power audio amplifier circuit based on LM391. Inductor L1 is constituted by 20 coils of wire, with…

18W Audio Amplifier

55 years ago

This is the circuit diagram of 18W audio amplifier. The circuit is quite simple and inexpensive to built. It uses…

Diode Zener Tester

55 years ago

This is the circuit diagram of zener diode tester which tests zener diodes with breakdown voltages extending up to 120…

Active FM Booster

55 years ago

This is a simple low cost circuit of an active FM booster that can be used to amplify the FM…