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 circuit was found in an American publication from the 1980s. The circuit generates pulses from...
This circuit is from 1977 Radio Shack documentation. The frequency depends on the capacitor. The...
Found in a 1993 Electronics Experimenter Handbook, this circuit uses a multimeter to measure...