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@contesting.com>
To: "Robert Morris" <robrk@nidhog.net>; "glenn riccio" <gfriccio@hughes.net>
Cc: <amps@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@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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