This circuit is used to turn on the headlights when it gets dark. The circuit is from an Electronics Now magazine from October 1998. The power transistor must be equipped with a heatsink.
The transistors of this circuit found in a 1992 Electronics Handbook can be the BC558 and the 6 V...
This 600-ohm output impedance circuit was found in a Radio Electronics from October 1963. The...
Used in radio reception, this circuit was found in the February 1983 Radio Electronics magazine. The...