For controlling the 120 device I'd sujest a chopper circuit from
Crydom. The series is PCV, 3-10VDC input and proportional AC out.
http://www.crydom.com/userResources/productFamilies/50/crydom_pcv.pdf
Jason
Yan Seiner wrote:
> I tried to post this earlier and never saw it on the list.
>
> I'm kicking around the idea of controlling an ordinary 120 VAC
> incandescent light (actually a 150W heater).
>
> I'd like to control the heater based on the temperature of the surface
> beneath it. I need to control it to approximately 105 deg F (more or
> less; great accuracy is not needed here.)
>
> I've found some basic PIC circuits on the web but I wonder if anyone
> here has any suggestions, both for the temp probe and for the heater
> control.
>
> As this will most likely be a one-off, an inexpensive commercial
> solution would be fine.
>
> (Aside: anyone on the list do small one off jobs?)
>
> --Yan
>
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