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From:         Eric Christensen <sunkist@IASTATE.EDU>
Subject: Re: [EE:]Re: High current PCB
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On Fri, 30 Jan 2004 06:17:31 -0000
spacecat <spacecat@450SE.CO.UK> wrote:

> Have you looked at the number of fet's you'll need or even the basic power
> requirements/cooling of your system?
> 12*1000A = 12kW!
>
> some of the best (1000A ) fets I've used are still 6mohms .. which is 6
> volts dropped across one fet. even if you use 10 that's still
> 1000*1000*.0006 =600W dissipated in the fets.

True, but at 60 watts per FET, this shouldn't be too bad to dissipate with a
standard heatsink and/or fan setup.  Not overly efficient, but...

Eric


>
> I'd use a relay.
>
> Richard

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