That sounds right Nick. That would be the normal arrangement
for any negative bias power supply. Same style circuit as used in
many many transmitter designs from the tube era.
73s - Bry, AF4K...
From: Nick England
> I don't have a Viking II any more, but the schematic certai
I don't have a Viking II any more, but the schematic certainly shows
the two negative leads of C12-C13 (dual 15uf/150v) going to either
side of the bias supply choke and the positive lead to ground. In the
photo in the manual it looks like this dual cap indeed has two black
(negative) leads and a s
sense till I carefully sketched them out, then its sort of "OH so that what
it is" Bernie- Original Message -
From: "Arnie Adelman"
To:
Sent: Saturday, March 27, 2010 7:29 AM
Subject: [AMRadio] Negative Bias Supply on Viking II
> I've begun recapping
I've begun recapping the Viking II I'm working on. The dual 15Uf/150V cap
connected to the 6AL5 has the positive sides of the cap going to the 6AL5 and
choke and the negative side going to ground. Since this guy is intended to
produce negative voltage and the connection is to the plates of the
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