> Depending on the thermal conductivity and thermal capacity of what you
> are controlling, and the precision you need, may only need a
> thyristor: usually the time constants of temperature controlled
> systems is quiet large (like tens of seconds), so just turning the
> heater on and off is enough. If this is the case you won't need a PWM
> output either, just binary.
> Note that by saying a thysritor I mean any on-off device: triac, or
> relay too. A thyristor is rectifying, so you'll get at most 1/2 the
> power unless you use two of them.
Yes this makes sense, I imagine most electric ovens use this method.
Not having tested anything I'm curious which method is less energy efficient.
Joel
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