This circuit was found in the 1992 Radio Electronics Handbook. It is used to test VCR recording heads. It can also be used for other purposes.
This circuit was suggested by Motorola in 1980s documentation. The circuit employs an operational of...
This simple calibration circuit consists of a crystal oscillator that generates an accurate 100 kHz...
Quadrature Generator for Transistor and SCR Testing This circuit was found in US 1980s...