[Amps] Lines Voltage High

[Carl]

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 at tr2.com>
To: "Glen Zook" <gzook at yahoo.com>
Cc: <amps at 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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