Obtained from a 1969 neon lamp documentation, this circuit shows how to assemble an indicated circuit triggered by - 24V pulses. The neon lamp is of the era type.
This circuit contains a voltage doubler that comprises two diodes and two capacitors, in order to...
Radio Electronics magazine published in a 90's issue this simple alarm that can use any general...
This circuit is from the time when slide projects were used. We find it in a 90's Wels’ Think...