Found in a 1969 British publication, this circuit uses a regenerative switch with two transistors to produce pulses that depend on C1. The relay must be in accordance with the supply voltage.
This circuit was found in the February 1980 issue of Radio Electronics magazine. The digital...
We found this circuit in a Motorola manual. The circuit has the capacitor charging at 15 to 30 V,...
This circuit has a high input impedance and low output impedance, serving as an adapter for...