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Electromagnet

Posted: Thu Nov 19, 2020 4:16 pm
by brian1951
I have several Electromagnets around my layout, but one has failed, how do i test it with a multimeter. I know its only a coil of wire and it may have a break in it, but a test first to save me unwinding it would help. This is type i use. https://www.conrad.com/p/faller-161675- ... top-214797

Re: Electromagnet

Posted: Thu Nov 19, 2020 4:46 pm
by Steve M
Not an expert (as you well know Brian) but if it is just a coil of wire then a simple continuity test with a multimeter would prove the break?
T’other Brian will give the correct answer shortly. :D

Re: Electromagnet

Posted: Thu Nov 19, 2020 5:17 pm
by Rog (RJ)
Test for continuity as suggested. You may find its a joint failed where the leads are soldered on to the coil.

I've just seen that there is a 2 year warranty on them, which is pretty good.

Re: Electromagnet

Posted: Thu Nov 19, 2020 6:15 pm
by teedoubleudee
It should show a few ohms on continuity Brian. You say you have several on your layout so check against a working one after disconnecting one end from external circuitry.

Re: Electromagnet

Posted: Thu Nov 19, 2020 7:58 pm
by brian1951
Thanks chaps.