Flip Flop 4027 (CB25120E)

This circuit was suggested by an article in the April 1988 Radio Electronics magazine. The flip-flop is of the JK type.

Ramp Generator (CB1434E )
This circuit was obtained in a 1973s documentation. The transistors may be BC558 for the PNP and...
Differential temperature alarm (CB26159E)
The sensors in this circuit that triggers when the temperature goes out of a certain range are...
MC34071 Active Band Pass Filter (CB15282E)
Other operational amplifiers series, such as MC34072, MC34074, MC35071, MC35072, MC35074 d MC33071...