Originally designed to trigger a printer with a delay, this circuit can be used for other purposes. The circuit is from a Radio Electronics from September 1984.
Obtained from a 1967 documentation, this circuit uses transistors from the time. The galvanometer can be a...
Motors up to 2 A can be controlled by this circuit, which requires a symmetrical source. Although...
This sensitive MW receiver was found in a publication of year 1958., The circuit uses germanium...