Using the 723 integrated circuit, this power supply has the voltage determined by R2 and R3, which can be changed. The circuit is from a Radio Electronics magazine from July 1971.
This circuit shows how to use a Vishay IL4216 or IL12-F optodiac to control a triac in a common...
The circuit shown is from the November 1996 Electronics Now magazine. The basic circuit is in the...
Motors up to 2 A can be controlled by this circuit, which requires a symmetrical source. Although...