I remember that Lou Balint built magnifier drivers submerged in oil, but
he used ferrite rings at the center to increase the flux and the
coupling. Seems the oil did help to improve the insulation, but some arcs
occurred anyway at
times I think. I don't remember if he actually measured the coupling and
determined if it was higher than an air-insulated magnifier. I also don't
know
what the overall effective coupling of the system was. Nor do I know if
the efficiency was improved. The driver was very compact and that may
have made it more difficult to deal with. Also the type of ferrite may not
have been optimal for the frequencies and power levels involved. It may
have saturated.
I also remember someone else mentioning that they planned to test
an oil emersion classic TC, but I never heard any follow up.
If someone has a small coil especially if it is the type that has
the gap, xfrmr, capacitor, etc. off to the side separate from the
primary/secondary, then it would be easy for them to measure
the closest tolerable coupling in air, then place the unit into a
plastic oil filled pan, and then try tightening the coupling.
Maybe someone will do that.
John
----
Hi John
<Jeff Behary has with his flat coils prior to moving to impregnating the
coil(s) in wax. Not sure if anyone has done this with a helical coil.
Take care,
Bart
FutureT@xxxxxxx wrote:
Bart, all,
Has anyone on this list built a TC and put the coil partly
under oil or another dielectric fluid to see how much coupling
could be tolerated? It would be an interesting experiment.
John
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