Figure 1 goes for economy by adding a D-type flip-flop and a few discretes to a ... the RC network and other curious connections surrounding the F1a flip/flop. When S1 is pushed and the circuit closed ...

Alternatively, this RC power on Set circuit can be wired to the Reset pin to change the initial power on state of the switch. The device ESD clamping diodes provide the capacitor discharge path when ...

[roelh] has built a flip-flop circuit using only one transistor and some bizarre logic that’s been slowly developing over on hackaday.io. [roelh]’s single transistor flip-flop is heavily ...

This circuit uses a dual-D flip-flop and an OR gate (Fig. 1) that provides a positive-polarity gate signal as well as an indication of which pulse came first, to be used by an MCU counter.