Re: OLTC - Primer

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Marco Denicolai by way of Terry Fritz <twftesla-at-qwest-dot-net>" <marco.denicolai-at-tellabs-dot-com>

Terry,

just a simple suggestion for your OLTC prototype. Remember to
mount/engineer the IGBT string so that the substitution of a damaged
device is not a pain in the *** but just a fast welder exercise. I'm
afraid you'll have to replace some of those IGBTs, and having to take
apart all the string to change one or two devices will make the
operation more tedious. Use a good glass-fiber PCB, or your pads will be
scratched away after 1-2 IGBT replacements.

I'm following this project with interest. Keep us informed.

Best Regards


Tesla list wrote:
> 
> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
<SNIP>
> So we are dealing with "really small" impedances here :-))  It seems crazy
> passing such low (500V) through such low impedances (milliohms) to get
> oscillation, but that is what this thing is about...  We are looking at
> 3000-5000 amp peak primary currents too!
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