This dimmer for incandescent lamps using triac and an LF7237 IC was found in May 1985 Radio Electronics magazine. The circuit supports extension buttons.
This adjustable direct current source circuit uses a triac operating as a variac. The circuit is...
With the precision given by the crystal this circuit provides signals of several frequencies for the...
This amplifier allows you to recover recorded tapes from a tape player that has the mechanism in...