In fact, this circuit from the 60's applies to photographic printers of the time, timing the lighting of a 20 W lamp. The components are from the period.
This circuit was obtained from an English magazine from 1985. It consists of a pulser that drives...
This circuit can measure the power of loads up to 1 kW and its accuracy depends on the settings and...
This circuit came out in an English magazine from 1978. The circuit generates a ladder of 128...