This two-transistor circuit was found in a 1966 US documentation. The power transistors are of the time. The system is intended for cars with contact breaker.
This timer produces a continuous sound at the end of the timer set in potentiometer RV1. The...
This 3-and-a-half-digit voltmeter was obtained in a 1991 documentation. Actuating integrated...
We found this temperature control in the SGS manual of linear integrated circuits of 1982. The...