Rewinding Microwave Transformer

[6502dude]

I have read of a couple of references to using transformer from old microwave oven, removing HV secondary, and rewinding with 12 AWG wire to create a high current transformer.

I have removed 2Kv secondary from a couple of microwave xformers but have not given rewinding a try yet.

Has anyone got experience going this?

I'm curious if results are reliable, issues while hum / vibrations in laminations, etc.

Cheers

 

[Variac]

There are threads about this but I don't have them on hand. Intensive searching of this forum might work.

 

[Sch3mat1c]

An externally hosted image should be here but it was not working when we last tested it.

This is what I have powering my induction heater experiment... about 100V 10A (since the secondary comes from a smaller MOT). I also have a bundle of 8AWG that gives about 9VCT, good for electrolysis after some schottky diodes (anyone for 12V at 50A?).

I would recommend making a bobbin out of stiff cardboard to wind on. Fit it loosely so it can be placed easily.

Tim

 

[li_gangyi]

I've tried rewinding MOTs for amp use...somehow they seem to heat up alot...I've removed the shunts on the transformers as wel...hmmm

 

[DigitalJunkie]

Yea,the shunts can be a problem..

http://www.users.qwest.net/~ptaylor/Electronics/MOTpowersupply/MOTPSpage.html

 

[6502dude]

Yea,the shunts can be a problem..

http://www.users.qwest.net/~ptaylor/Electronics/MOTpowersupply/MOTPSpage.html

This was extactly info I was looking for.

Thanks!