This battery charger was found in the Electronics Experimenter Special Projects of 1983. The circuit uses an SCR as the control element.
This receiver is from an old English magazine from 1965. The transistors used are germanium, no...
Found in a 1980s documentation, this circuit makes use of components from that time. Modern...
This version is a variation of the previous circuit, inverting the position of the transistors to have the...