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 simple diode test appears at other points in this section. Or circuit can be adapted to use...
Found in Electronics Now magazine in an issue from the 90s, this circuit is different from the...
This circuit inverts the phase of an audio signal, maintaining its intensity. The transistors can...