[Boatanchors] Voltage Sequencing on 807s
Dave Brown
tractorb at ihug.co.nz
Fri Oct 18 19:02:44 EDT 2013
John
Make sure never to have screen voltage applied without similar or higher on
the anode first- and as you already have bias on grid one- all should be
fine.
DaveB, NZ
----- Original Message -----
From: "J. Forster" <jfor at quikus.com>
To: <ARC5 at mailman.QTH.net>; <boatanchors at mailman.QTH.net>;
<boatanchors at puck.nether.net>
Cc: <ArmyRadios at yahoogroups.com>; <Milsurplus at mailman.QTH.net>
Sent: Saturday, October 19, 2013 11:21 AM
Subject: [Boatanchors] Voltage Sequencing on 807s
> I'm looking at testing some 807s, which seems pretty straight forward.
> And, no, I don't have a tube tester available.
>
> Obviously, the heater and control grid get powered first, but what about
> the screen and plate? Or does it even make any significant difference?
>
> My original intention was to use a (decoupled) divider off B+ for the
> screen, but at the moment, I'm inclined to use a separate supply.
>
> -John
>
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