4. PWM Signal Generation Unit. In the final step, a PWM pulse is given to the TRIAC as per the speed requirements, which in turn varies the ON/OFF timing of the AC signal and provides a variable ...

As alternative, Solid State Relay can be used as well (with zero cross detection inside), like Fotek SSR-40 DA. But you can not use this approach for light dimming which needs more higher frequency.

With the help of an arduino microcontroller and an SSR relay, control of the mains power supply up to 50A was made. Since the relays are heating, it is necessary to perform cooling of the relays, or ...

This reference design integrates Zilog's ZAURA™ RF 868 MHz Wireless Module onto a Current-Sensing Power SSR. The product is designed, to showcase wireless control of an AC power SSR.