Re: Induction heater questions
- From: "Tim Williams" <tmoranwms@xxxxxxxxxxx>
- Date: Sat, 13 Aug 2005 01:29:24 -0500
Nothing eh? Too hard? Too easy? Too boring? Not boring enough?
*Sniff*... and I even took pictures of *glowing metal*!...
Tim
--
Deep Fryer: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms
"Tim Williams" <tmoranwms@xxxxxxxxxxx> wrote in message
news:Z3SKe.27624$_41.9530@xxxxxxxxxxx
> Check my current progress here:
> http://webpages.charter.net/dawill/tmoranwms/Electronics.html
>
> Looking for suggestions on fast IGBTs suitable for offline operation (my
> goal is a 240V operated unit capable of perhaps 10kW), so 400Vce or so,
and
> frequency up to 20kHz, possibly more, so they'll need to be fast.
>
> I heard IGBTs have a bad habit of latching, is this true? What other
> hazards should I expect, and how to handle them?
>
> My driver circuit probably won't like the extra Cg so I'll accept any
> suggestions for half or full bridge driver circuits or ICs too.
>
> Speaking of bridge, what is the advantage to half vs. full bridge in the
> final version?
>
> I'd also like something more comfortable than a scope and crude frequency
> control - anyone have suggestions for a good PLL (to control phase some
> amount above resonance, to control power output) and/or voltage regulator
> (to keep tank voltage constant - without dropping below resonance!)?
>
> Oh, and what inductance should I expect to use for Lmatch, and since I
won't
> like the size of an air core unit, what kind of core and how many turns
> would you suggest?
>
> Tim
>
> --
> Deep Fryer: a very philosophical monk.
> Website: http://webpages.charter.net/dawill/tmoranwms
>
>
.
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