This circuit was found in a Motorola Manual of 1965. The circuit has neon lamps as trigger elements. Equivalent SCRs can be used.
With this circuit, we can have a remote frequency control of a tuned circuit. Lx is the coil of...
This circuit for incandescent lamps was found in the February 1972 Radio Electronics magazine. The triac is...
Suggested by an old Popular Electronics, this circuit is based on an uncommon integrated today,...