[Milsurplus] PP-4763A Power Supply Bridge Diodes

[mac]

Dave,

My 1972 D.A.T.A. book rates the 1N1186 at 40 amps AVERAGE CURRENT.   
Since diodes in the full wave bridge configuration only conduct on  
alternate half cycles of the applied AC a 40 amp  average current  
rating each would be sufficient for 2X40=80amps output current total.  
(Or,  2X35=70 amps if you like your ratings better.)

Dennis D. W7QHO
Glendale, CA



On Jul 17, 2010, at 7:52 PM, <arc5 at ix.netcom.com> <arc5 at ix.netcom.com>  
wrote:

> OK all you folks smarter than me:
> The PP-4763A supply is supposed to be rated at
> 24 volts 50 amps, with headroom for surge.
>
> So how come it uses 1N1186 diodes in the bridge,
> which are rated for only 35 amps?
> How does that work?
>
> The local surplus "candy store" has some 200-amp diodes
> in stock.  Think I'll put them in.
>
> 73 Dave S.
>
>
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