Two transistors on a regenerative switch are used to trigger a triac. This circuit is from the RCA Power Circuits manual. Transistors admit equivalents.
This simple transistorized game that appears in other versions in this section and website, was...
Microsemi Le87557 Differential Amplifier Mouser Electronics offers Microsemi Le87557 single...
In the figure we have an interesting configuration in which we took advantage of the very high...