This circuit for incandescent lamps was found in a 70s documentation. The circuit uses an SCR according to the power of the controlled lamps. The delay is a few seconds, given by capacitor C1.
Found in an Australian documentation from 1991, this circuit was sold in a kit at the time. It is a...
Found in a RCA manual from the 1960s, this circuit uses components from that time. It can generate...
This circuit makes it possible to recover programs recorded on cassette tape as was common in MSX...