Do you have particular dimensions in mind? Small might be 2" long, 1" diameter. It could also be 1" long, 1/2" diameter. Or larger, or smaller. It's a relative thing.I need a small electromagnet in a cylinder shape for contact.
Switching polarities is easily done with a DPDT (double pole double throw) switch or relay.I need the polarity to be switched easily but with strong fields.
There are a number of places that sell electromagnets. Alternatively, you could buy a solenoid of suitable voltage.Is there any place that sells them or do i have to make one.
How fast is very fast? 100mS (1/10 second)?I need there to be a switch somewhere to switch the polarity very fast back and forth.
Well, you can get microswitches that are controlled by a lever; the microswitch contacts could power the coil of a DPDT relay.Is there any way to make a mini spring contact where when the piece of metal is pushed down onto the other piece it can switch polarity.
There is an electromagnet of those approximate dimensions on this page:could somebody draw me a diagram and parts list? 2" long 3inch diameter. Where do buy a double pole trhow switch etc. I need the small electromegnet,switch polarity,onpoff power and polarity switch buttin thanks!
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