I am using the following circuit to turn ON/OFF a heater. Works like a charm. However, I would like to limit the maximum power delivered to the heater. The reasons for this are:
- the heater is a fire hazard when running full on
- the triac has to be sized for quite large current when powering the load full out
What is the simplest (fewest added components) way to limit the power, that a triac delivers to a resistive load?