FLUXGATE magnetometer - how it works

[tarakan]

Assuming that I am looking at an 'ideal' fluxgate magnetometer.


I am feeding this transformer an ideal sine wave. The secondary winding output and the primary winding input are fed into two channels of an oscilloscope.

A magnetic field from the outside (like Earth magnetic field) is applied.

Would I get a shift of the output signal in relationship to the input signal by X or by Y axis?

http://www.google.com/imgres?um=1&newwindow=1&safe=off&hl=en&authuser=0&biw=1280&bih=711&tbm=isch&tbnid=MnAQmLhnObWiOM:&imgrefurl=http://www.sciencetronics.com/greenphotons/%3Fp%3D752&docid=5Ig245WYo7XlRM&imgurl=http://www.sciencetronics.com/greenphotons/wp-content/uploads/2011/11/IGP5393_900p_50XE_900p_50XE.jpg&w=327&h=260&ei=dtiiUY-2GfPC4APV_4HQCQ&zoom=1&ved=1t:3588,r:0,s:0,i:80&iact=rc&dur=3054&page=1&tbnh=158&tbnw=199&start=0&ndsp=19&tx=82&ty=85

VS

http://www.google.com/imgres?um=1&newwindow=1&safe=off&hl=en&authuser=0&biw=1280&bih=711&tbm=isch&tbnid=8sWadv5nEPCHJM:&imgrefurl=http://www.sciencedirect.com/science/article/pii/S0924424705007181&docid=svaQywi7ykfhwM&imgurl=http://ars.els-cdn.com/content/image/1-s2.0-S0924424705007181-gr2.jpg&w=316&h=231&ei=dtiiUY-2GfPC4APV_4HQCQ&zoom=1&ved=1t:3588,r:11,s:0,i:113&iact=rc&dur=649&page=1&tbnh=173&tbnw=237&start=0&ndsp=19&tx=124&ty=86
or
https://www.youtube.com/watch?v=https://www.youtube.com/watch?feature=player_detailpage&v=zdr_Og0PeRk#t=20s

Would this depend on the angle of the magnetic flux in relationship to the transformer?
Would this be different for a bar transformer vs a ring transformer.

Thank you.

 

[Vailanor]

Yes, the output signal will shift in relation to the input signal, depending on the angle of the magnetic field and the type of transformer you are using. For a bar transformer, the output signal will shift in the direction of the flux, while for a ring transformer, the output signal will shift perpendicular to the flux.