[TheForge] Inverters

[Ben Barrett]

Well certain [electric] motors are induction-run.... things like
lights, most heaters, etc, are resistive... I'm pretty sure the
standard arc welder is resistive.  Induction uses EMF from a coil, and
often involves pulsation (some frequency, similar to AC [vs DC]) and
sometimes higher voltage as well.

I'm very curious about DIY induction forges, esp. after seeing the
nice commercial model at my first conference recently.... I hear some
rice cookers use induction for their heat, and am wondering about
scrapping some broken-down rice cookers, to try to adapt for small
metalworks.  Any thoughts or ideas?  I presume I'd have to isolate the
heating element, remove surrounding plastic, change/remove the temp
sensor, and so forth, only to be able to heat up a very small amount
of metal... but very efficient if tuned.

If anyone has experience building their own induction forge, please
contact me off-list.  This *might* be a topic worthy of the list, in a
new thread.

But anyway, yeah, resistance loads are the "common" ones that make
most sense, the resistance loads are sort of "sinks" for electrons, a
simple heating element is a classic example.

ciao,

ben


On 5/25/07, Washington, Aubrey O. <awashington at ou.edu> wrote:
> Lynn,
>
> That sounds like important information.  But, I don't know the difference between resistive and inductive loads.  What kind of loads are things like a circular saw, MIG welder, work lights, etc.?
>
> Aubrey
>
> ________________________________
>
> From: theforge-bounces at mailman.qth.net on behalf of Lynn and Susan Lang
> Sent: Fri 5/25/2007 10:49 AM
> To: theforge at mailman.qth.net
> Subject: [TheForge] Inverters
>
>
>
> Hello
> Check the fine print, some inverters are rated for resistive loads only,
> Inductive loads tend to destroy solid state devices.
>
> lynn
>
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