Re: MOT leakage

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

Original poster: "S&JY" <youngsters-at-konnections-dot-net> 

Of course, you can simply mount the transformer in a separate non-magnetic
box.  Some use acryllic.  You might want to do that anyway so you can
immerse your transformer in oil to keep it cooler if you will be using a
high duty cycle.
--Steve Y.


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, November 08, 2004 5:18 PM
Subject: RE: MOT leakage


 > Original poster: "Steve Conner" <steve.conner-at-optosci-dot-com>
 >
 >  >The noise is so loud that I cannot leave it
 >  >as it is.
 >

 > The reason why it is so noisy is that the MOT is designed with an
undersized
 > core to save money. This means that the core saturates and hence leaks a
lot
 > of magnetic field, making any ferrous metal nearby vibrate.
 >
 > It may get slightly quieter under load, as the IR drop in the primary will
 > reduce the maximum flux that the core sees. But to get a big improvement
you
 > might have to build a new transformer with a larger core area or more
 > primary turns.
 >
 > You might like to try "mating" the E parts of two identical MOTs together
 > and connecting the primaries and secondaries in series. This will give the
 > same output voltage but will half the peak flux density so it should run
 > much quieter and leak less flux.
 >
 > Steve C.
 >
 >
 >
 >