RE: OLTC Update

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

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

Hi Terry,

> -----Original Message-----
> From: tesla-at-pupman-dot-com [mailto:tesla-at-pupman-dot-com]
> Sent: 19. elokuuta 2002 05:51
> To: tesla-at-pupman-dot-com
> Subject: OLTC Update
> 
> 
> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
 
> The diagram of the IGBTS, caps, and control stuff is here 
> (sorry about the
> very rough sketch ;-))
> 
> 	http://hot-streamer-dot-com/temp/OLTC08-18-09.gif
> 

I know you'll soon get bored from all the suggestions you are getting 
from all around the world, but here is one more :)

Make the life of your IGBT easier by lowering their drive voltage to, 
say, 15V and the TVS voltage to 16V. A 20V TVS easily has a clamping 
voltage of well over 25V. More, the IGBTs conduct already with about 
12V. Leave them more margin and they'll stay with you a longer time, 
hopefully :)

Best Regards