This 100 kHz oscillator was found in a 1966 Motorola publication. The transistors are of types suitable for the generated frequency and L1 / C1 depend on that frequency.
The circuit shown has the advantage over the reductions with resistors to have a much higher...
This circuit uses a switch to select the direction of rotation of a DC motor. It was found in the...
Found in American documentation, this circuit can make use of modern equivalent transistors. The...