This circuit is intended to detect when current flows through the opening of a car door. The circuit fires the horn for 90 seconds. The FET can be the BF245 and the NPN transistors can be the BD135.
According to the 1990 documentation in which we found this circuit, the chickens must be fed at...
Although the integrated used originally is uncommon today, more modern operating equivalents can...
This circuit was found in a General Electric documentation from 1965. The purpose of this circuit is...