This circuit was obtained from a 1968 documentation and can be adapted to use current equivalent components. The maximum frequency depends on the components used.
Hybrid PWM controllers with integrated 8-bit microcontrollers for supervision and management can...
This amplification stage circuit with a germanium transistor was found in a 1980s documentation. The...
This circuit is from an 80's documentation. The circuit makes use of a component of the era, the...