Dimmer lamp 220v ac (resistor values)

[anouxr]

Hi,
Im new to electronics so i have some issues on reading datasheet

I want to control a halogen lamp using triac (Q4010L5) and optocoupleur (MOC3021).

I want to know the best value for (R1-R2-R5), to not dammage the triac and optocoupleur.

"I didnt mention here the zero crossing detector part that will give implusion to RB1".
Thanks for your time.

 

[BradtheRad]

Similar projects are discussed in related threads listed further down this page.

A halogen bulb is different from ordinary incandescent type. Here's a discussion which brought up the advisability of dimming a halogen.

https://www.edaboard.com/showthread.php?385899

 

[Easy peasy]

if you want to limit the max gate current to 1A say, then R1 + R2 = 325 ohm, note they must be rated for >200V each to avoid them breaking down ...