[Boatanchors] Voltage Sequencing on 807s
J. Forster
jfor at quikus.com
Fri Oct 18 19:03:20 EDT 2013
Thank you,
-John
================
> 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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