The figure shows how to implement a filter against interference caused by the switching of a triac. The circuit is from a Radio Electronics from April 1987.
This ultra-low power metronome was found in a 1991 documentation. The output transistor is general...
Found in old documentation as permanent security lighting, this circuit uses common components. The lamps...
In the figure we have the astable configuration for the 4093 that serves as a clock for...