[Amps] Equalising resistors with HV diodes

[Radio WC6W]

On Sat, 18 Sep 2004 17:55:33 +0200 (CEST) Roger B <f6fer at yahoo.fr>
writes:
> Hello to all
> I am designing a 2kV PSU for a 1kW amp (bridge not
> doubler).
> About equalising resistors and capacitors with HV
> diodes, some says it is absolutely necessary. Others
> say it is a waste of time with modern diodes.
> Any comment will be appreciated. 73 Roger

Hi Roger,
   Depends on which diodes... and how reliable you wish the resulting
unit to be...

   There was a lengthy discussion here on AMPS about 5 years ago on this
topic.

   Take a look at:

 http://lists.contesting.com/archives/html/Amps/1999-07/threads.html#0056
1

  Regarding the:
 
>Motorola Rectifier Applications Handbook
>http://www.onsemi.com/pub/Collateral/HB214-D.PDF

  I have that book in hardcopy and don't recall seeing any info regarding
the operation of diodes in series.   Whereas, their 1961 "Silicon Zener
Diode & Rectifier Handbook" covers the topic at length (sec 8.4, pp
124-130) and explains why equalization is good practice for several
reasons.

73 & Good afternoon,
   Marv WC6W







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