I was making a light dimmer for light regulation. It’s supposed to be running on 230V 50Hz mains and designed to handle 8 amps. Design is classic that can be found in triac or optocoupler design guidelines (https://www.fairchildsemi.com/application-notes/AN/AN-3003.pdf). It should support also inductive load because I have plan to use same circuit to regulate thermoelectric heating heads (that’s why there is additional resistance and capacitor).
I would be grateful if someone would make a review of the circuit. It’s always good to be sure when working with mains.
Also suggestions what capacitor to use are welcome!