This game for 4 competitors was found in a Popular Electronics from the 80's. The circuit has CMOS technology and can be powered by voltages from 6 to 12 V.
This is the traditional configuration of a 6 or 12 V source with 7806 or 7812 integrated circuits, for a...
This fader or guitar fading circuit was found in an American documentation from the 1980s. The...
Found in documentation from the 1960s, this power supply employs germanium diodes from the time....