This timer has a divider programmed by BCD switches. The circuit is from a Radio Electronics magazine from February 1989.
This circuit is triggered by the touch of the fingers on a sensor. The sensor is formed by two...
This circuit, found in a 1994 documentation, uses 20 A 2N5448 triacs or equivalent and should be...
Found in RCA documentation from the 1970s, this circuit is intended for firing thyristors in inverter...