DIY Super Electromagnet

37,291

126

11

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.

Share

Recommendations

  • Optics Contest

    Optics Contest
  • Audio Contest 2018

    Audio Contest 2018
  • Electronics Tips & Tricks Challenge

    Electronics Tips & Tricks Challenge

11 Discussions

0
None
PeterK2

2 years ago

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

1 reply
0
None
bubalPeterK2

Reply 2 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.

0
None

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

0
None
eyejuice

3 years ago on Introduction

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.

0
None
dmalamas

3 years ago on Introduction

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

2 replies
0
None
bubaldmalamas

Reply 3 years ago on Introduction

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.

0
None
artist10

3 years ago on Introduction

Hi,

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

0
None
cpallette

4 years ago

How strong is it?