Checked 1983 ARRL Handbook & it shows the 811 tubes with max voltage 1500vdc
The power supply choke provides some voltage stabilization
The non-choke PS are popular => cheaper to make, Less weight, Less cost to
ship, etc...
Filament - you're right at the rating, works but warm winding.... (Ask'um
what temperature rise is at 16A)
73 W5AJ
Robert
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of
maflukey@gmail.com
Sent: Thursday, February 27, 2020 1:12 PM
To: amps@contesting.com
Subject: [Amps] FW: Transformer Question
Thanks, you are correct. So 210 / 4 = 52.5 uF for the 811H.
Matt
KM5VI
From: gudguyham@aol.com <gudguyham@aol.com>
Sent: Thursday, February 27, 2020 11:10 AM
To: maflukey@gmail.com
Subject: Re: [Amps] Transformer Question
The 811h has 4 filter caps
Sent from AOL Mobile Mail
Get the new AOL app: mail.mobile.aol.com <http://mail.mobile.aol.com>
On Thursday, February 27, 2020, Matt <maflukey@gmail.com
<mailto:maflukey@gmail.com> > wrote:
... 100uF / 5 = 20 uF. 811H is 120 / 6 = 20uf. So both are the same,
the 811H caps just have some additional voltage headroom.
Matt
KM5VI
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