Looking for some advice, I am trying to create an onboard SSR to control the switching of a 120VAC load (heater/lighting), with an operating power of around 1500W max. I chose the following parts and am looking to find out if there is some fatal error I am not seeing (my first time building with Triacs).
The SSR will be turned on and off by an ATTiny85, which produces 40mA at its output. The MOC3020 (optocoupler triac) chosen requires If = 50mA max. The Q4025R5 (Power Triac) is rated for 400V, 25A, 50-50-50mA. Will this circuit work?
Do I require a zero-crossing triac for this load? Is this Q4025R5 a zero-crossing? And if not, can I simply just trigger the circuit on a rising-edge using an ISR for example by the ATTiny85?
The triac will be operating in quadrant 1 and 3 (for AC switching) in this circuit I believe.
The resistor (180, 1.2k) and capacitor(0.2uF) values chosen were given by a circuit I found online, so if anyone has any recommendations about how to perform circuit analysis with Triacs it would be greatly appreciated.