PIC to AC 220 V switch

[boban]

Hello, maybe stupid, but anyone has an idea, how to cheap and simply drive the AC swith - 220 VAC? I am using relay but maybe there is a simplier and cheaper way using triac or something like this? Thanks for the response...

[mister_e]

Triac and optocoupler do the job.

[boban]

Thanks do you have some suggestion schematics?

[mister_e]

we don't know your current requirement and current schematic, but let's say you interface a PIC to a Triac, i would suggest you to use an optocoupler in between. Something like MOC3011, MOC3022, or whatever else with triac output. OPen it's datasheet and you'll find some basic schematic in.

[T.Jackson]

Don't forget the snubber circuit.

[mister_e]

Yes if you drive inductive and you don't use Snuberless Triac