This circuit for very low frequencies was found in an American documentation from the 90's. Transistors are for general use and the frequency depends on C1 and C2.
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...