Re: [Amps] Plate impedance formula

[George KB2Z <Thermionic_Emission@earthlink.net>]

Will,  For the way the output tank sees it, in a common 2 tube amp, would 
that value double, half, or stay the same? Thanks, George


At 12:00 AM 2/6/05 -0500, you wrote:

> It's been a few days back, I didn't go back to find the post but someone
> wanted to know the formula for finding the plate impedance on a tube. For
> whomever it was, as I didn't see it ever get answered, I'll post it below.
> I almost overlooked it myself and forgot about it.
>
> RP = EP / 1.8 X IP
>
> 1.8 = K factor for class AB1 (Changes with ZSAC)
> RP = Plate Resistance
> EP = Plate Voltage
> IP = Plate Current
>
> Will
>
>
>
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