We found this circuit in an EDN from the 90s. The circuit is a voltage quadruplicator using operating equipment of the time. The output current is low.
This circuit consists of a simplified Hartley oscillator that changes the frequency according to...
This circuit activates the horn if the door is opened with the headlights on. The circuit is for...
This linear characteristic circuit is based on a junction field effect transistor. The FI and BFO...