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.
Small inverters can help to obtain high voltages from batteries. Although the switched inverters that...
It is an ideal assembly to be implemented as work by students of digital electronics courses, as...
In this very simple circuit, the LED flashes at a frequency of 60 Hz. It is convenient to check the...