Re: MOT Ideas...

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

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi,

The shunts are what limits the current by bypassing the magnetic fields
away from the secondary.  With them removed, the transformer will act like
an ordinary transformer without much current limiting.  In the case of a
MOT, you can simply use a bit more external ballast to control current.

I don't suggest that you try and measure the short circuit current of a MOT
with the shunts removed.  It may be "HIGH"!!

Cheers,

	Terry


At 12:09 PM 6/16/2001 -0400, you wrote:
>This may not be pertenant to the thread but...
>I took a MOT and knocked out what I thought was the shunts (with a chisel)
>and gained 440 volts total.
>Not sure about current just yet.
>
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Friday, June 15, 2001 9:57 AM
>Subject: Re: MOT Ideas...
>
>
>> Original poster: "tesla by way of Terry Fritz <twftesla-at-qwest-dot-net>"
><tesla-at-paradise-dot-net.nz>
>>
>> Hi Mark
>>
>> As I understand it saturation can occur in an inductor when the number of
>> Ampere * Turns that the core can reacvhes a level where all of the iron
>> domains are fully magnetized, ie the magnetic field in the iron will not
>> increase. This occurs in both transformers and basllast inductors.
>>
>> The voltage itself from adding secondaries in series does not make the
>> system saturate. Stauration is determined by the current, whether a core
>> will saturate also depends on the presence of an air gap in the path, this
>> lowers the overall inductance but permits more current to flow before the
>> system satuatates.
>>
>> I understand ballasting to be  current limiter by placing an impedance in
>> series with the primary rather than a ballast to a given power.
>>
>> All in all you will not saturate your MOTS if you limit the primary
>current
>> to the same value that is requred when they deliver their full rated power
>> O/P. In tesla service it is very easy to exceed this figure and I'm pretty
>> sure that a given MOT has very little margin between saturation and full
>> power operation (zillions made , over engineering =$$$)
>>
>> I've been told that even at full power MOT's are beginning to saturate at
>> the peak of their AC I/P waveform. *(not that this need be of particular
>> concern)
>>
>> Hope I've understood your question correctly
>> Rgsd
>> Ted L in NZ
>> > Does it still saturate a higher voltage even if it is ballasted for the
>> same
>> > over all power?
>> >
>> > Mark
>> >
>> > In a message dated 6/14/01 10:47:05 AM Eastern Daylight Time,
>> > tesla-at-pupman-dot-com writes:
>> > > Removing turns of the primary or runnig it at more than it'sd rated
>> voltage
>> > > is a recipie for saturation and lots of I/P mains current .
>> >
>>
>>
>>
>>
>>
>
>
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