>Today I'm trying to control a 1800W electric heater with a PIC.
>About 16A @ 110VAC, I was thinking of using a 25A Triac and
>optocoupler/driver.
>My question is how hot will the Triac get? is there a better way? cheaper?
>thanks
>
>Jason
>P.S.
>I've archived all the PID discussions for the next step of this project.....


  Jason:

  The SHARP S116S02 is an SSR I have used, although this would
  run it at max. Has built-in opto isolation, heat sinkable.
  If you could split your heater load in two and use two SSRs
  this would be more reliable. They're less than three bucks.

  Reg Neale