In electrical heating applications, resistive heaters are powered through phase angle-controlled SCR/triac circuits to vary the applied voltage ... by another RV1 potentiometer position. As an example ...

The setting of P1 determines the phase of the trigger pulse that fires the triac. The circuit incorporates a self-stabilizing technique that maintains the speed of the motor even when it is loaded.

[Daniel] knew how the TRIAC functioned in the circuit and also knew that a standard TRIAC of sufficient specifications could be used as a replacement even if it didn’t have the correct form ...

In the majority of applications, the triac will ... We will take as our example the BTA212-600B. Its I GATE of 50 mA is well matched to the typical discrete gate trigger circuit.

The FL7730 circuit is an active PFC controller for single-stage flyback topology application. The device supports both triac and analog dimming. The device can achieve triac dimming control ...