Re: Schottky diodes in SSTCs

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

Original poster: "K. C. Herrick" <kchdlh-at-juno-dot-com> 

Greg (& all)-

Greetings to down-under.

I shouldn't think you'd have to use Shottkys with the IRG4PF50WD; from
the spec's, it appears to be fast enough at 100 KHz.  But with MOSFETs
you definitely need them; the intrinsic diodes are too slow.
Unless...does someone know of good fast-intrinsic-diode MOSFETs?

Let me comment in passing that I've become burned out--not to make a pun
of it--on SSTCs.  Perhaps it's my age (or capability).  Currently, I (&
also Dave Leddon) am pursuing a scheme for sequentially charging a
series-ed set of low-voltage capacitor-groups using a commutator & then
discharging them via a spark gap into the primary circuit.  No h.v.
transformer involved.

Ken Herrick
CA USA

On Fri, 23 Apr 2004 08:22:16 -0600 "Tesla list" <tesla-at-pupman-dot-com>
writes:
 > Original poster: Mr Gregory Peters <s371034-at-student.uq.edu.au>
 >
 > Hello all,
 >
 > Just been looking at a few SSTC pages and am wondering whether it is
 > still
 > generally recommended to use schottky diodes in SSTC bridges, or has
 > it
 > been decided that  they are not needed? I have seen some designs
 > with and
 > without.
 >
 > Cheers,
 >
 > Greg Peters
 > Department of Earth Sciences,
 > University of Queensland, Australia
 > Phone: 0402 841 677
 > http://www.geocities-dot-com/gregjpeters
 >
 >
 >