Re: Anyone use MMC's with their pole transformers???????????

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "David Speck by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dave-at-davidspeckmd-dot-org>

Pieter,
PT's are potential transformers, typically used on high tension power 
lines to provide a lower proportional voltage for metering purposes. 
 Typical ratings might be 14.4 kV to 110V or 220V at one half to an amp 
or so.  These are sort of like a small pole pig, but are embedded in 
silicone or epoxy instead of being oil immersed like a pole pig.   
Availability may be limited, depending on your location and luck at the 
scrap yard.   These are sometime used as supplies for medium to large 
size coils.  A series set of 6 or 8 microwave oven transformers can do a 
good imitation of one of these, at a lower (or next to no) cost, except 
for your time to collect and assemble them.

XRTs are X-Ray Transformers.  Taken from X-ray machine power supplies, 
they typically are rated at much higher voltages -- 25 - 100 kV, at 
about 50 mA.  They are usually run under oil immersion, and may (or may 
not) be current limited with a magnetic shunt, like neon sign 
transformers.  Coil applications are limited by the voltage ratings (too 
high) and current limitations (too low).

HTH,
Dave

>>We have coils that go from little tabletops for classroom demos, up to the
>>15", 18", and 23" systems, and even the proposed Avalon coil, and they ALL
>>use, or will use MMC caps. They can easily stand up to the "Badness" of
>>Pigs, PTs, MOTs, and, if you're really insane, XRTs :)
>>    
>>
>
>what are PTs and XRTs?
>
>just increasing my vocabulary!!
>
>thanks!
>
>pieter
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