Found in American documentation from the 90's, this circuit consists of a solid state relay with lock. The component values depend on the application.
This high voltage source circuit was found in an old American publication. It uses a voltage...
Frequency in this oscillator is controlled by a crystal. Any 1 MHz to 15 MHz can be used. The JFET can...
With the circuit shown, we have an excellent level for the signal obtained from an electret...