[Amps] Henry 2KD-5 HV Drop

[James Colville]

Only problem is his AL-82 blower was set to the lowest speed. The AL-82 has
a multi tap primary on the filament transformer. They use that to be able to
change the voltage to the blower. You can rig up a rheostat or speed
control.

73
Jim W7RY



On Thu, Feb 11, 2010 at 12:38 PM, Roland AH6RR <Toesonnose at hawaii.rr.com>wrote:

> I have a Henry 2KD-5 that when I turn it on the voltage is 3100V but then
> it drops to 2750V in about 1/2 minute. It seems to work fine as I get 1300+
> Watts out. I did replace the HV filter caps and Bleeder/equalizing resistors
> the new caps are 150uf that I got from Henry the old ones were 180uf. Any
> other reason for the voltage drop?
>  Oh I did order a new blower from Ameritron as their price was the best I
> could find for the EBMPapst blower they have it in stock for $82.95 and
> everyone else wanted $140+  and you had to buy at least 6 with a 16 week
> waiting period. I did remove the old blower disassembled and cleaned it up
> some and reinstalled it. It I not as loud as it was but still has way too
> much noise for my taste. I was at a friends Shack and he has a AL-82 with
> the Papst blower and you can barely hear it.
>
> 73
>
> Roland AH6RR
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