Re: Solid-state TC - transformer design

• To: tesla-at-pupman-dot-com
• Subject: Re: Solid-state TC - transformer design
• From: RODERICK MAXWELL <major-at-vicksburg-dot-com>
• Date: Sat, 26 Oct 1996 16:32:25 -0500

Tesla List wrote:
> 
> >From MALCOLM-at-directorate.wnp.ac.nzFri Oct 25 21:47:10 1996
> Date: Fri, 25 Oct 1996 20:49:28 +1200
> From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
> To: tesla-at-pupman-dot-com
> Subject: Re: Solid-state TC - transformer design
> 
> I have a fundamentally simple answer to this problem (rather trickier
> to implement but still in the SMPS domain)......
> 
> >    I'm going to use a 10 ohm 225w power resistor placed before the
> > filter capacitors in the circuit to limit the rate of charge to the
> > capacitors. In previous circuts I blown the bridge rectifier even though
> > it was a high current, high voltage type! The filter caps are two 4500uf
> > in parallel. I have also recently acquired a surplus 120vac variac rated
> > at 45amps to control the voltage. You can disregard the filter network
> > on the secondary of the output transformer because it was taken from a
> > manufacturers application circuit. The mosfets I will be using are
> > Harris semiconductor IRFP450s.
> 
> Do what Mark Barton did and use a power factor correction pre-
> regulator.
> 
> Malcolm
> 

  I already have these parts available, and paid for though.(smile)

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