Hi guys
I am looking for information about how to control an AC(240V) load from a lower DC voltage, says about 5V.
The AC load I want to control is/are heating element/s, the goal is to control the element through a MCU with thermal-couple feedback, PID loop in software.
I am thinking using solid state relay and controller it with PWM, but I am not sure if I can PWM AC.
so what is the usual approach to control an AC load like that?
I am looking for information about how to control an AC(240V) load from a lower DC voltage, says about 5V.
The AC load I want to control is/are heating element/s, the goal is to control the element through a MCU with thermal-couple feedback, PID loop in software.
- control the load at a constant temperature
- ramp up the temperature at a constant rate, say about 2-3 degree C per second
- ramp down the temperature 3-4 degree C per second
I am thinking using solid state relay and controller it with PWM, but I am not sure if I can PWM AC.
so what is the usual approach to control an AC load like that?