[Amps] HV smps

[Alex Eban]

Hi Paul:
Where can I get a schematic of the thing?
I have about 6 years of design experience with offline SMPS, so I might be
able to analyze it and maybe suggest a few tings.
73 and all the best:
Alex	4Z5KS

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Paul Decker
Sent: Thursday, March 26, 2009 4:09 AM
To: Roger
Cc: amps at contesting.com
Subject: Re: [Amps] HV smps



Hi Roger, 



Thanks for the reply.   I honestly don't know how to figure that out, I
would love to learn though!    



The part(s) I am using for the h-bridge are Fairchild FDH45N50F.   They are
rated at 500V and 45A.  The input to these is 0 - 340 V pulsed DC at 100 Khz
50% duty cycle, I expect that they might be a max of about five amps through
them when under full load.   It actually looks like only two mosfets would
be conducting at the same time, so I suspect the dissipation is also about
50% duty cycle. 



73, 

Paul, kg7hf 




----- Original Message ----- 
From: "Roger" sub1 at rogerhalstead.com 

How many watts will they be dissipating? 
  
73 

Roger (K8RI) 
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