Found in documentation from the 90s, this circuit was used in communications receivers of the time. MOSFET is a component of the time, uncommon today.
In a transmitter sequencer we have a high input impedance and a low output impedance. The voltage...
This basic configuration aof a touch switch controls a relay. Power supply can be 5, 6 or 12 V...
This circuit amplifies signals from low impedance sources as microphones, transducers, etc. For...