This circuit for incandescent lamps was found in the February 1972 Radio Electronics magazine. The triac is rated according to the lamp power and the sensitivity adjustment is made in R1.
The reference voltage determines the output voltage on this circuit which has a maximum current of 5 A....
This filter of two transistors has the cutoff frequency determined by the formulas next to the...
July 2017 - Ricoh's new 200mA R1524x voltage regulators are available from Mouser Electronics with...