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 circuit produces the sound of percussion such as blocks, drum, bell, etc. The frequency...
This circuit can be used with the CIR12642E TTL Roulette, or other game circuits that must draw...
We found this transmitter circuit for different frequency ranges in a 1992 documentation. The...