We are all familiar with the snap-on phenomenon of inexpensive TRIAC dimmers that are often used to control incandescent lamps –turn the pot until the light comes (snaps) on and then reduce the ...

These three schematics can also be adapted by adding, as is well known, an R-C snubber circuit between resistor R and the opto-Triac to increase this last device immunity and enlarge the gate pulse ...

The circuit relies on a classic optoisolated triac to switch the AC line, although [R. Jayapal] notes that a relay would also work. The switch circuit consists of two transistors, a comparator, a ...