DIY Super Electromagnet

by bubal

44K13211

Intro: DIY Super Electromagnet

How to Make a BIG and Powerful Electromagnet with the Primary of the transformer of a microwave oven. Remove the Secondary. With Iron or Steel (ferromagnetic materials) it attracts with a really great strength. With non ferrous metals like aluminum and copper it repels them due to Eddy currents.

11 Comments

PeterK2 7 years ago

Quick question, could you cut off the excess ends of the "E" to lighten it?

bubal 7 years ago

It is possible, but I don't know how much, because the E does an important function. Increases the magnetic permeability so the magnetic field is channeled better in one direction.

Dashing Rainbow Dash 8 years ago

How hot does it get, and could I cut the excess ferrite off the transformer to make it lighter?

eyejuice 8 years ago

How long can you keep the magnet on without tripping a breaker? Have mine hooked up to a power strip which trips after a few seconds. Tempted to plug directly into a wall outlet but i dont want to risk overheating the coils.

dmalamas 9 years ago

Hi, could you tell me what is your input source (voltage value) and if this electromagnet works with AC (50 - 100 Hz) input?

Thank you

bubal 9 years ago

230 volt 50 Hz. But if you live in a 120 volt 60 Hz country you will find microwave oven transformers that work with that values so it is more or less the same.

dmalamas 9 years ago

Thank you very much..

artist10 9 years ago

Hi,

What did you connect the wires from the primary core to?

HoboTeaParty 9 years ago

What is the rating on the transformer you used for this?

bubal 9 years ago

I dont know. 230 V, 2000 Watts