This polarity inverter circuit for voltages down to about -12 V was found in the December 1992 issue of Radio Electronics magazine. The current is a few mA.
An input pulse produces a damped oscillation at the output of this circuit seen elsewhere on this...
The figure shows how to implement an R-S flip-flop or bistable reset-Set with an LM3900...
Radio Electronics magazine in November 1962 published in an article several circuits with tunnel...