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Re: [Amps] PIV requirement for identical, individual diodes

To: amps <amps@contesting.com>
Subject: Re: [Amps] PIV requirement for identical, individual diodes
From: Ron Youvan <ka4inm@tampabay.rr.com>
Reply-to: ka4inm@gmail.com
Date: Mon, 23 Apr 2012 11:10:40 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
   Gary K4FMX Schafer wrote:

>> Just draw a diode bridge circuit and you can easily figure out how much
>> voltage is across each diode. Consider that at any given time one side
>> of the transformer is at ground and the other side is connected to the
>> filter capacitor. Then look at what diodes are reversed biased.

> But the filter capacitor is ALWAYS connected across the transformer with a
> full wave bridge. Any spike from the power line will always be shunted by
> the large filter capacitor. No way for a large spike to reverse bias any of
> the diodes.

   How about when the capacitor is charged to say, +1,600 Volts and the 
transformer's outingput is 
-1,600 Volts and then an inductive kick causes the transformer outingput to 
jump to 2,000 Volts or more?
-- 
    73 Ron KA4INM - All E-mail sent to this address shall linger in the Google 
cloud forever!
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