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Forums
4hv.org :: Forums :: High Voltage
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best mot EVER!

Move Thread LAN_403
Arcstarter
Mon Dec 06 2010, 01:33AM
Arcstarter Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
ubuntupokemoninc wrote ...

um its not so much that its big, its that the primary is wound with 18 awg wire, and that the secondary is wound with 26 awg wire, all for high current,

The wire size/resistance/heat is not the only factor in heating of transformers. There is also eddy current losses, which means Killa's comment still holds plenty of truth.
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ubuntupokemoninc
Mon Dec 06 2010, 01:42AM
ubuntupokemoninc Banned on 1/22/2011 for repeated rule violations after multiple warnings.
Registered Member #3299 Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
there core is actually pretty thin ( looking at top of transformer core), but its got a huge diameter (hight wise)
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ScotchTapeLord
Mon Dec 06 2010, 01:49AM
ScotchTapeLord Registered Member #1875 Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
And don't forget saturation. Modern MOTs operate in saturation which creates a lot of heat. A larger core will not saturate as easily.

Altogether it looks like a properly designed MOT. You said it was really old, so it must have been before engineers realized they could save a buck by skimping on on the metal. Good find!

You know, considering how well-made it is, you might want it to last a long time. If that's correct, I'd recommend against wiring your stack's output in series and stressing the secondary insulation.
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ubuntupokemoninc
Mon Dec 06 2010, 01:57AM
ubuntupokemoninc Banned on 1/22/2011 for repeated rule violations after multiple warnings.
Registered Member #3299 Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
its getting plopped in oil some time this week when the other trannie i ordered comes.
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ubuntupokemoninc
Sat Dec 11 2010, 02:43AM
ubuntupokemoninc Banned on 1/22/2011 for repeated rule violations after multiple warnings.
Registered Member #3299 Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
finally my other mot came shades here is a video of me getting a 3 ft. arc,

i had to put 2 plugs in parallel to do this shades


Link2
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