This circuit is a modification of the previous one, also found in the July 1995 Electronics Now magazine. The triac must be according to the controlled power.
This is yet another simple LED driving game circuit that appears in several other versions on this site....
Voltage quadrupliers are used in Power supplies, increasing in alternating voltage and converting...
Found in a Popular Electronics from the 90s, this circuit uses a double 555 to emit beeps when the...