Gikfun Copper Magnetic Levitation Coil with Iron Core for Arduino DIY (Pack of 3pcs) EK1909

Good product, I was able to tap the core out to use with a magnet pendulum project. Would by again to save the hassle of winding. If you are looking for a coil for an electromagnet project, these work fine.

Works great at 24 volts, Tested at 12 volts and it barely had any magnatism to it at all.

Good value, packaged well, on time delivery, perform as expect. Much easier than winding my own by hand.

Cumple su cometido

I hooked this up at 12V, 1.2A, and the magnetic field pulsed, most likely because it was overdrawing the power supply. I swapped power supplies to 12V 3A, and that solved my pulsing problem. The field strength isn't bad. It does however get QUITE hot after only a couple minutes.

good

The wire barely bends much before breaking, be very careful not to kink it in any way because it will fall off

Pretty decent little coils for the price. 480 turns. Didn't have any obvious shorts in them. Weird odor but I'm not buying coils for the smell.