Elektor 5/07 Magnetometer

[okantex]

why do you think gradiometer is better than this.

[asguard]

Hi okantex,
Not, I never try this. I think Gradiometer is better, if You have HMC1021S sensors.


BRGDS

You can use the HMC1001 magnetoresistive sensors too, instead of the HMC1021S`s . And even the KMZ ones.

If you want to experiment you could salvage the magnetic sensors out of an old disk drive, (most have 3, they`re even smaller than the 1001`s, bout the size of a match head....lots of fun to solder without small tip and fingernails, even more difficult to align).

All the best

[rael]

Hi okantex,
Not, I never try this. I think Gradiometer is better, if You have HMC1021S sensors.


BRGDS

[asguard]

This one might be even easier for you.

http://www.ssec.honeywell.com/magnet...adiometer.html

Regards
asguard

[okantex]

hi Rael

did you build this magnometer?

do leds shhow increase and decrease of filed strength.in other words for positive and negative fields.

[rael]

Hi okantex,

Carl Say:
'Don't post copyrighted material'
http://thunting.com/geotech/forums/s...ad.php?t=10526

Larger resolution pics found at:
http://www.elektor-electronics.co.uk...rt=53325&PN=On

[okantex]

Hi Both of them looks easy .
but I can not get image bigger and clear.
so can not see components.
can not you give larger resolution pics.

[Esteban]

Andy Flind's project on EPE (January 1995) is based also on transformer. Signal shows via 10 leds and audio variation. Uses common chips. You can modificate it for various purposes.

[rael]

Simple Magnetometer project found at follow link:
http://www.elektor-electronics.co.uk...rt=53325&PN=On
Using 220V/12V mains transformer for sensor.