400VDC MAX on a 6146? I havent been paying attention to the thread but
thats a 750VDC tube for CW and SSB service.
Carl
KM1H
----- Original Message -----
From: "Bill, W6WRT" <dezrat1242@yahoo.com>
To: <amps@contesting.com>
Sent: Thursday, August 06, 2009 4:31 PM
Subject: Re: [Amps] Plate Bypass Capacitor
> ORIGINAL MESSAGE:
>
> On Thu, 06 Aug 2009 20:05:32 +0000, Manfred Mornhinweg <manfred@ludens.cl>
> wrote:
>
>>
>>No, because the swing you describe is all the way to the negative and
>>positive PEAKS of the RF waveform. The RMS value of the RF voltage is
>>0.707 of the peak voltage, and so the RMS will be close to 0.7 times the
>>DC supply.
>
> REPLY:
>
> You are correct, my oops. I was thinking peak voltage on the plate and you
> were
> talking RMS.
>
> However, your example of 600 VRMS on the plate of a 6146 grossly exceeds
> the
> manufacturer's ratings. RCA rates the 6146 at 400 VDC absolute max, which
> corresponds to a RMS max of about 280 V when properly tuned. I realize
> your
> example was just for discussion but we might as well discuss real world.
> :-)
>
> 73, Bill W6WRT
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