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.

Transformerless Power Supply (CB1569E )
In applications where there is no danger of any contact with live points on the circuit by the...
Sequential Cruiser (CB16479E)
This is an LED effect that we found in a 1988 documentation. The circuit drives LEDs with a...
TTL Schmitt Trigger 7400 (CB13777E)
In the figure we have the way to implement a TTL Schmitt trigger for 60 Hz signals, obtaining...