Suggested by a 90s Radio Elecrtronics, this circuit is intended to supply mobile equipment of the time. The transformer data is given next to the diagram.
This circuit was found in an English magazine in 1983 but can be assembled with BC558. However, the...
This circuit for 12 V relays was found in the July 1992 Radio Electronics magazine. The circuit is set...
This circuit should only be used with incandescent lamps and the SCR should be fitted with a heat...