[Amps] Henry 3k Filament transformer taps

[Carl]

For some reason the local 14.4KV dead end run Im on has been transformered 
to 119/238V for about a year now. No complaints from me as it had been a 
steady 246 for over a decade; never saw it higher but it did bother a lot of 
vintage gear forcing me to go with several bucking transformers on the 123V 
side. At 110-113V everything runs a lot cooler and much less drift.

Carl
KM1H



Carl
KM1H


----- Original Message ----- 
From: "Glen Zook via Amps" <amps at contesting.com>
To: "Robert Morris" <robrk at nidhog.net>; "glenn riccio" <gfriccio at hughes.net>
Cc: <amps at contesting.com>
Sent: Tuesday, September 09, 2014 11:02 AM
Subject: Re: [Amps] Henry 3k Filament transformer taps


> 125-VAC +/- 2-volts / 250-VAC +/- 4-volts is now the "norm" for most major 
> electric companies in the United States with voltages on the "+" side 
> being prevalent during the warmer months when air conditioning use is at a 
> peak.
>
> In this area, the Dallas, Texas, area, such has been the fact since the 
> 1970s.
>
> It has many many decades since 110-VAC was the "norm".  Then came 115-VAC, 
> then 117-VAC, then 120-VAC, and, today, 125-VAC.
>
> Running higher voltage allows more KWH to be delivered without the need 
> for rebuilding of the distribution lines.  Rebuilding these lines would 
> require an astronomical outlay of cash which then would result in 
> considerably higher electric rates.  The rates are high enough as is. 
> But, nothing like they would be if a major overhaul of the distribution 
> systems had to take place.
>
> Glen, K9STH
>
> Website:  http://k9sth.net
>
>
> On Monday, September 8, 2014 11:01 PM, Robert Morris <robrk at nidhog.net> 
> wrote:
>
>
>
> Are you sure it's 240? I'm sitting watching my fancy UPS, on the TV stuff, 
> beep  with 124(248) coming out of the wall.
>
> Lots of stuff in the junk box says 115 if not 110. Bet your transformer is 
> from the 115 days.
> You need a variac on the fils, anyway.
>
> Isn't nice we pay by KWH. Don't have raise the price, just crank up the 
> volts....
>
>
>
> On Sep 7, 2014, at 7:09 PM, glenn riccio wrote:
>
> Hello all you henry radio amp owners. I just bought a  Henry 3k filament
> xfrmer off the internet. It is supposed to deliver 7.5 v @ 21 amps. There
> are taps on the primary side to adjust output .  I cannot get less than 
> 8.75
> volts out. My input voltage is 240vac. I tried all the taps on the primary
> side using #1 as the common leg. It is a EC1216a  transformer. I want to 
> use
> it for my 4-1000a amp I'm building.
>
> I suppose I could call or e-mail henry radio but they might be annoyed 
> that
> I'm not using it for  one of there amps. Any help would be appreciated. 73
> Glenn K7gfr
>
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