However the plate and filament voltages may be excessive and those Chinese
tubes become IED's above about 1600V, just ask all the AL-811 family owners.
Carl
KM1H
----- Original Message -----
From: "Jerry Kaidor" <jerry@tr2.com>
To: "Glen Zook" <gzook@yahoo.com>
Cc: <amps@contesting.com>
Sent: Friday, June 15, 2012 8:20 PM
Subject: Re: [Amps] Lines Voltage High
> The ambient line voltage for most major electric companies has been
> 125-volts +/- 2-volts for decades.
>
>finally, today,
> 125-volts. The primary reason for increasing the voltage is that the
> customer pays by the kilowatt-hour. Modern appliances require more
> kilowatt-hours
*** Now THAT makes sense. Yes, I thought about adding a bucking
transformer. But given that the tube bias line is actually brought out
to the PTT, it was simpler to just add a diode string to set the bias to
some small negative value so that the quiescent was within reason.
- Jerry Kaidor
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