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  Yes,the third winding (with 10 turns) is for the
filament of magnetron. Don't plug 240 volts in it,
your fusses will be burned instantly and the
transformer will arc internally ( it can not taking up
more than 2000 volts).
--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: Hhchicken1-at-aol-dot-com 
> Hello list!
> My MOT has three windings on it - one for 240v
> mains, one HV winding and also 
> one with about 10 turns which I assume to be low
> voltage, but extremely high 
> current - filament for magnetron?
> If I plugged 240vac into this third winding, and
> drew HV out from either the 
> primary or HV secondary, do you think the MOT would
> fry?  If not, this would 
> presumably give a very high voltage and low current
> output, which is 
> considerably safer than the 2000V, ~1A output given
> in its usual 
> configuration.
> Thanks in advance for any advice,
>     Henry Hall

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