Author Topic: Microwave oven transformer laminations  (Read 770 times)

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Offline BurningTantalumTopic starter

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Microwave oven transformer laminations
« on: May 03, 2020, 11:44:24 am »
I am constructing a spot welder for Li-ion cells so removed the secondary winding from a couple of microwave transformers. One transformer was wound with aluminium wire and was from a 'no brand' cheapo oven. The other had copper wire and was from a Panasonic oven. I decided to use the copper wire unit, but noticed that it had extra laminations in the slot between the primary and secondary windings. The aluminium transformer did not. I may have to remove these laminations to get another turn of the heavy gauge secondary wire and wondered what their function was before I do so. Any theories?
BT
 

Offline Prehistoricman

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Offline BurningTantalumTopic starter

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Re: Microwave oven transformer laminations
« Reply #2 on: May 04, 2020, 02:30:38 am »
Thanks for that info.
Fascinating, and something that I was unaware of. I did lash up the welder on the bench and it worked well so I have tidied it into a case, but I will experiment with the transformer in the light of this new info before I go any further.
BT
 


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