This circuit only works with incandescent lamps and the frequency is adjusted in the pot, depending also on the capacitor. The triac must be equipped with a heat sink. The circuit is from an 80s manual.
This circuit was found in a Motorola documentation from 1968. The load current is 10 A. The...
This circuit is from a Mallory 1968’s documentation. The integrated circuit is of the time and the...
This circuit is from National Semiconductor using an LM11, which is uncommon nowadays. The circuit...