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813 tube coil
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To: "'Tesla List'" <tesla@pupman.com>
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Subject: 813 tube coil
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From: Tesla List <tesla@stic.net>
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Date: Mon, 1 Jun 1998 00:26:21 -0500
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Approved: tesla@stic.net
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From: Alan Sharp [SMTP:AlanSharp@compuserve.com]
Sent: Saturday, May 30, 1998 5:46 PM
To: Tesla List
Subject: 813 tube coil
Greetings All,
At the UK Teslathon I bought a couple of 813 valves -
Has anyone used these for a tube coil? - is there a good
schematic out there?
I've never used tubes before - I think they need a heater -
will a bunsen burner be all right :)
I have checked out the specs 2.5kV, at 225mA - so in
theory a pair of these - and a 2.2kV microwave transformer
and I should be able to shoot for 1kw power output.
But they are pentodes (and I only understand triodes)
The filament needs 10V at 5A - can I simply connect
a 5-0-5V transformer or do I need to have a way of
adjusting and correcting the current?
Hints, tips, help greatly appreciated.
Have fun,
Alan Sharp UK