This light effect circuit was found in the July 1971 Radio Electronics magazine. The circuit is powered by 110 V mains but can be modified depending on the triac and lamp.
With the coded activation of the relays, it is possible to control which of the 16 outputs...
The integrated circuit used in this application is not very common. Transistors and resistors...
This simple circuit makes use of neon lamps to indicate the voltage of a power grid. The lamps are...