John Lyles wrote:
> At work we use oil cooling for a number of situations with high voltage. The
> oil gives a great benefit for insulation and allows more compact layouts. I
> don't know of any RF amplifiers this way, only pulse amplifiers using planar
> triodes and thyratrons.
> The tube is basically sitting under the oil. However, I have not worked on
> any of these designs, and I believe they still require some mechanical work
> to force the oil to carry the heat by the anode. In one system there is a
> small recirculating oil pump and
> pipes, all immersed. (not the pump motor). The oil is typically a
> silicone-based liquid called Envirotemp 200. You can also used Envirotemp
> FR3. You can also just use transformer oil, like Shell Diala.
It has been very common for the rectifiers of in X-ray machines to be
immersed under
oil with the transformer, I have asked technicians what the equipment is like,
they say 6
glowing glass tubes, six or more inches below the oil's surface is all you
can see.
Remember 160 kV is about where these pulsed power supplies start. (GE X-ray
technicians
at hospitals)
--
Ron KA4INM - The next election, I know what is going to happen, I'm going
to help.
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