[Boatanchors] 812 Self-Rectifying Power Oscillator

[Geoff]

Diathermy was up around 27mc back then.

I was given a 3 x 812 with 866 rectifiers induction heater made by Marion 
Instruments. Has a big fat LF coil.


----- Original Message ----- 
From: "Mark Foltarz" <Foltarz at rocketmail.com>
To: <boatanchors at mailman.qth.net>
Sent: Friday, July 20, 2012 8:54 AM
Subject: Re: [Boatanchors] 812 Self-Rectifying Power Oscillator


Sounds like an old diathermy machine




>________________________________
> From: David Stinson <arc5 at ix.netcom.com>
>To: boatanchors at mailman.qth.net
>Sent: Friday, July 20, 2012 8:50 AM
>Subject: [Boatanchors] 812 Self-Rectifying Power Oscillator
>
>I recently acquired a self-rectifying power oscillator
>using an 812 tube. Frequency appears to be longwave
>with a big link-coupled output. The switchable outputs
>are marked "Tank One" and "Tank Two."
>Electroplating?? Anyone know, and the why of
>high-power RF to do it?
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