This simple neon alternating flashing circuit was found in an old American publication. The current is very low, but the supply must be made with at least 100 V.
This circuit is from a 1968 publication. It uses germanium transistors from the time, having...
This circuit can be used as shield or to drive powerful loads from low current switches such as...
This is a 6-transistor transistor receiver manufactured in the 60s. The circuit is a...