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

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

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.
>  > >
>  >
>  >
>  >
>  >
>