This circuit acts on a relay disconnecting the load when the input voltage exceeds the set limit. The transformer is 12 V secondary according to the relay used.
This circuit has a gain of 34 dB and a good power to be used as an audio booster in cars. The...
This circuit was obtained from Dutch documentation from 1967. It uses transistors of the time...
Found in an Electronic Design this circuit controls a headlamp by triggering a time determined by the...