This is the circuit of a MW commercial radio obtained in a 1967 publication. The transistors are made of germanium and are powered by 4 common batteries.
This circuit was found in an 80's Radio Electronics. The circuit multiplies the frequency of a low...
This circuit can be interleaved between guitars and guitars to give the fuzz distortion effect. The...
A complete test for opto-couplers can be made using the circuit Bellow. The function generator...