I have a heating element that I want to control so that I can eventually make a PI temperature controller for a tank.
I have a 1500W heating element but I step down the voltage from 120V to 24V. The two options I know and can do are:
Using a triac on 24V ac. However, I don't know how to tell if it misfires
Using a full bridge rectifier to convert 24VAC to DC, and then using PWM on a SSR (the SSR is hooked up to the heating element)
Are either of these good (and efficient) options? Are there any other recommended options or methods? Also, is one option safer than the other?