Light Dimmer

Hello there!

I'm trying to build a light dimmer using this schematic: https://lh5.googleusercontent.com/-yBeo3Xx6suQ/SmUcmP5y9iI/AAAAAAAADw8/GI2RYW716o8/s985/ac_control.png

And for that I was going to buy the following components from mouser:

http://pt.mouser.com/ProductDetail/Fairchild-Semiconductor/MOC3020M/?qs=sGAEpiMZZMteimceiIVCB%2fP6x%252bUn0jloy2u%2fHQF%252buX8%3d

http://pt.mouser.com/ProductDetail/Fairchild-Semiconductor/H11AA1M/?qs=sGAEpiMZZMteimceiIVCB%2fatwDxFn2UUP6IsbBm0hHU%3d

http://pt.mouser.com/ProductDetail/ON-Semiconductor/BTA12-600BW3G/?qs=sGAEpiMZZMsWETSb%252b0CojJF4orPjbE%252bjkRXgNFSa99g%3d

Do you think they are good for the job? What about the circuit, do you find any flaws on it?

Thank you so much for your time.

Nope, looks good. I did the same with a similair moc and triac. Worked out great. Link to it in sig.

One thing to check is how much current/ how many watts that a light bulb etc uses and how much the triac can handle.

That is interesting.

@zepedrowdp

The schematic look good, like sribow2 said, depending of the values of the parts ( currents , watts, voltage ).

I check this two site how a dimmer work.

http://www.epanorama.net/documents/lights/lightdimmer.html http://home.howstuffworks.com/dimmer-switch.htm

The way I understand it, the input signal from the first opto-coupler going to the Ardiuno and an output signal from the Ardiuno going to the triac opto-coupler by "sync" with the AC voltage - chop it at the right time - to produce a dimming effect, using an PWM from the Ardiuno. The control is done in coding.

@sirhow2

Now, I understand what you are trying to do. Dimming using software. Interesting.