Re: PlasmaSonic II SSTC Board SALE $25.00 EACH or $45.00 for TWO

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

Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net> 

Hehe,  With my self resonant system,  my IGBTs barely get warm after a 1
minute run!

Regards - Jim Mitchell
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, March 31, 2004 7:34 PM
Subject: Re: PlasmaSonic II SSTC Board SALE $25.00 EACH or $45.00 for TWO


 > Original poster: Finn Hammer <f-h-at-c.dk>
 >
 > Jim,
 >
 > Nope. The plasmasonic is top notch, AFAIK.
 >
 > The reason they popped is farmore embarrassing. The first many fryed due
to
 > deliberate hot tuning, and subsequent hot swiching, forgetting to mount
 > heat sinks , in general all sorts of overpowering situations.
 >
 > And the majority of the breakdowns happened in this bridge:
 > http://home5.inet.tele.dk/f-hammer/Resize-of-sstc1.jpg
 >
 >
 >
 > Cheers, Finn Hammer
 >
 > Tesla list wrote:
 > >Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net>
 > >Were the IRFP460's frying because you were running them with the plasma
 > >sonic?
 > >Regards - Jim Mitchell
 > >----- Original Message -----
 > >From: "Tesla list" <tesla-at-pupman-dot-com>
 > >To: <tesla-at-pupman-dot-com>
 > >Sent: Tuesday, March 30, 2004 7:12 PM
 > >Subject: Re: PlasmaSonic II SSTC Board SALE $25.00 EACH or $45.00 for TWO
 > >
 > >  > Original poster: Finn Hammer <f-h-at-c.dk>
 > >  >
 > >  > All,
 > >  >
 > >  > I`m from Denmark, it is Kurt who is Swiss.
 > >  >
 > >  > About FET`s, as always the best prices are found on E-Bay, I got some
 > >quite
 > >  > increadible deals there, which allowed me to fry 50 IRF460 before I
got a
 > >  > full bridge to run reliably. But that source has dried out, it would
 > >appear.
 > >  > Another possibility is:
 > >  > http://www.dalbani.co.uk/index.php
 > >  > He sells the 460`s for 2.70 UKP not sure if he`s got the IXYS`s.
 > >  > Certainly, both Farnell and RS-Components are prohibitively
expensive,
 > >  > asking an outrageus 15 quid apiece.
 > >  >
 > >  > Cheers, Finn Hammer
 > >  >
 > >  > Tesla list wrote:
 > >  > >Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com>
 > >  > >I believe Finn Hammer (switzerland i think) found a second source
for an
 > >  > >alternative FET (same package) for
 > >  > >a reasonable price over there in Europe.
 > >  > >Dan
 > >  > >
 > >  > >  >Secondly, I'm not sure where you got the $80.00 from, but that
figure
 > >  > >is  >clearly incorrect.  You can purchase IXFN44N50 MOSFETs from
 > >  > >  >Future Active Electronics for $18.50 each.  Its not much more
 > >expensive
 > >  > >than  >something like the IRF460
 > >  > >I think those MOSFET bricks are a lot more expensive outside of the
US.
 > >  > >I've not seen them below about $80 equivalent here in Blighty.
Whereas
 > >  > >IRFP460s are $5 each, or $40 for a tube of 25 if you know the right
 > >  > >people ;) So I prefer to buy the IRFP460s and treat them as cannon
 > >  > >fodder 8-o
 > >  > >Steve C.
 > >  > >
 > >  >
 > >  >
 > >  >
 > >  >
 > >
 >
 >
 >
 >