The circuit is from a Radio Electronics magazine from October 1987. The Triac must be equipped with a heatsink and the transistors are general purpose.
This circuit has a thermal chamber that acts as a stabilizer, compensating for the ambient...
Other operational amplifiers in the series, such as the MC34072, MC34074, MC35071, MC35072,...
September 2017 - Texas Instruments' new TPS720 and TPS720-Q1 low dropout voltage (LDO) linear...