Found in a 1968 US publication, this circuit can operate on any power grid. The thickness of the wire depends on the load current.
We found this circuit in an old Popular Electronics. It is possible to light a common neon lamp...
We found this circuit in Radio Electronics from October 1968. The circuit drives headlight bulbs...
This is a transistor flip-flop suggested by General Electric in a 1966 paper. The transistors are of...