Is there a tool that detects magnetic fields?

[brucester]

Hello,

I was wondering if there was some kind of device that detects magnetic fields and measures them.

For example, i pulse a coil with a certain amount of electricity, this device would measure the strength and longevity of the magnetic field.

Thought it could be useful for testing coils.

Thanks

[joop]

The simplest and cheapest is using a hall sensor. They can be bought using integrated electronics. See http://en.wikipedia.org/wiki/Hall_effect_sensor

[alcartraz]

emf meter as used for ghost hunting and for finding electrical faults try fiels meter is the best one google it they work well

[brucester]

sweet

they have an invention for everything :P

Will make my research so much easier

thanks a lot

[Qiaozhi]

Hello,

I was wondering if there was some kind of device that detects magnetic fields and measures them.

For example, i pulse a coil with a certain amount of electricity, this device would measure the strength and longevity of the magnetic field.

Thought it could be useful for testing coils.

Thanks

Have a look here ->
http://www.trifield.com/
and click on the youtube link at the bottom of the page.

[6666]

If you want to measure EMF then I recommend EMF-822A & K-II
they are great meters, have both.

http://www.amazon.com/EMF-822A-K-II-Popular-Paranormal-Available/dp/B001PFKB8A