If the load is inductive, we must have the circuit in the figure. It will be convenient in this case to also use a snubber circuit to protect the TRIAC. TRIACs of the TIC series can be used in this application and for loads less than 200 W the resistors can have their values reduced to 22 ohms. Note that it is important to have resistors of appropriate values so that the TRIAC switches at the beginning of the semi cycles and so that most of the power is transferred to the load.
