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[AMPS] Experience with K2AW rectifiers anyone?

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Subject: [AMPS] Experience with K2AW rectifiers anyone?
From: (Rich Measures)
Date: Sun, 25 May 97 19:39:00 -0700
>Hello all,
>Anyone out here have any experience with k2aw (silicon alley) HV 
>rectifiers? I'm looking to replace the individual devices in my 
>LK-800 and am concerned with the ratings.
>K2AW claims that although his rectifiers are sold as 1 amp devices, 
>with proper heat sinking, they are 3 amp devices.
>My supply runs about 3100 volts no-load and can deliver over 2 amps 
>in SSB service. I would want to use 4 of the 14KV "1A" in a bridge 
>configuration, replacing the 1N5408 strings. (I already have them)
In FWB configuration, 1N5408s will reliably deliver up to 6A of average-I 
if they are mounted on a perfboard in open air.  No heatsink required.  
Why replace such with lighter-rated rectifiers and a bulky heatsink, 
 If your 1N5408s have r/c "equalizers", you might want to read page 11-9 
in the newer version of the ARRL Handbook.  
   Also, the actual piv per leg at 3100v out with a C-filter is well 
under 4kV per leg.  Why would you want to use a 14kV/leg inverse rating?  
Have you ever heard the saying 'if it works, don't fix it'?  

R. L. Measures, 805-386-3734, AG6K   

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