Well, dear me, not paying attention am I. Rob has clearly already explained that and his maths is right whereas mine isn't. I'll have to try harder...
So, I grabbed one of my kids toy magnets and waved it about next to my ammeter and that caused the needle to flap about.
Give that a try if you have something similar. If the needle moves it's probably the coils that are the problem.
You could try putting an old fashioned compass next to the ammeter and see if it waves about when you test again.
If the compass moves then it's possibly the pointer I haven't tried this so I don't know how well it might work or if this test is just too sensitive to be helpful.
I think the pointer should have a magnet on it somewhere, although it's so long ago I took mine to bits I can't remember where.
Anyone else know? Maybe that's fallen off.
Cheers - Steve
So, I grabbed one of my kids toy magnets and waved it about next to my ammeter and that caused the needle to flap about.
Give that a try if you have something similar. If the needle moves it's probably the coils that are the problem.
You could try putting an old fashioned compass next to the ammeter and see if it waves about when you test again.
If the compass moves then it's possibly the pointer I haven't tried this so I don't know how well it might work or if this test is just too sensitive to be helpful.
I think the pointer should have a magnet on it somewhere, although it's so long ago I took mine to bits I can't remember where.
Anyone else know? Maybe that's fallen off.
Cheers - Steve
