This circuit is from an old American documentation using as indicators for the flip-flops neon lamps. This way, the circuit has two supply voltages.
This circuit was found in old American documentation. Transistor is general purpose and coil rated...
This 1-transistor circuit for currents up to 50 mA was found in the August 1974 Radio Electronics...
We found this circuit in the 1982 SGS Linear Integrated Circuits Manual. It is a control for...