This circuit was found in February 1976, Radio Electronics magazine. The circuit is powered by 12 V and consists of an intermittently triggered timer.
Suggested by an American documentation for 1969 neon lamps, this circuit provides SCR control with...
This circuit is designed to measure very weak currents, in the order of picoamperes. We found it...
The 709 integrated circuit is not common today. The circuit is from American technical...