This circuit was found in a 1977 documentation. It limits the voltage from a source using zener diodes on the rectifier bridge. It is an unusual configuration today.
The presented circuit is used in Power supply to increase the voltage output. The voltage output...
A pulse triggers this 800 Hz horn for a time determined by capacitor C1. Powered by 5 V the...
Found in an Australian documentation from 1991, this circuit was sold in a kit at the time. It is a...