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Forums
4hv.org :: Forums :: General Science and Electronics
« Previous topic | Next topic »   

What to do with a dead mot, and I need another one.

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Inducktion
Sun Oct 02 2011, 02:24AM Print
Inducktion Registered Member #3637 Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
 		I somehow managed to stab my primary on my mot with a flathead screwdriver whilst attempting to fix it.... Now the primary is ruined, what should I do with it other than throw it away? I can't rewind another primary, I don't have any wire fit for the job.
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Patrick
Sun Oct 02 2011, 02:58AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
 		If youve got a jet-ski or raft, now you have an anchor!
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IamSmooth
Sun Oct 02 2011, 03:09AM
IamSmooth Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
 		Just buy some magnet wire and rewind.
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Mattski
Sun Oct 02 2011, 03:13AM
Mattski Registered Member #1792 Joined: Fri Oct 31 2008, 08:12PM
Location: University of California
Posts: 527
 		The primary of a MOT is usually reasonably thick wire, it might be possible to do surgery and repair any shorted sections by cutting away the damaged area and soldering in new wire around any shorts or breaks, especially if the damage is only on the outer layer of the windings.
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radiotech
Sun Oct 02 2011, 04:12AM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
 		I somehow managed to stab my primary on my mot with a flathead screwdriver whilst attempting to fix it.

If you had driven the screwdriver into your hand, you could have joined the electricians union.

amazed!
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Patrick
Sun Oct 02 2011, 04:37AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
radiotech wrote ...

I somehow managed to stab my primary on my mot with a flathead screwdriver whilst attempting to fix it.

If you had driven the screwdriver into your hand, you could have joined the electricians union.

amazed!
I totally agree cheesey !!!



was it this bad?

1317530230 2431 FT125358 Mot

cause i fixed it, though it was a pain in the ass!\
\

WireTronic inc, (wiretron.com) might give you a free sample long enough to do the whole thing.

copper plated aluminum wire is the worst.
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Luceš
Sun Oct 02 2011, 01:24PM
Luceš Registered Member #4108 Joined: Sun Sept 25 2011, 11:43PM
Location:
Posts: 149
 		you could use it as a ballast, while building my vttc this summer... I was drilling wholes for wires and my drill pushed through the cabinet and stabbed my filament transformer's (rewound mot) primary angry so then I had to make another one mad
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Dr. Slack
Sun Oct 02 2011, 07:32PM
Dr. Slack Registered Member #72 Joined: Thu Feb 09 2006, 08:29AM
Location: UK St. Albans
Posts: 1659
 		Saw all of the remaining primary off and sell it for scrap copper, then put a dozen turns of heavy insulated wire on there as a new 12v primary. Et viola, a 12v to 2kV transformer needing only a 555 and a low voltage high current H bridge to drive it.
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Microwatt
Sun Oct 02 2011, 08:22PM
Microwatt Registered Member #3282 Joined: Wed Oct 06 2010, 05:01PM
Location:
Posts: 224
 		why not get another transformer. get outside on garbage day and look around
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Forty
Sun Oct 02 2011, 09:59PM
Forty Registered Member #3888 Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649
 		If the primary wire is solid copper then it might be worth salvaging. I've been using copper mot primary wire to make lots of beefy inductors and coils. If the wire is aluminum, then it would probably be best to just scrap it and look for another mot (the secondary could still be used as a ballast.)
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