Magnetic device having a yoke member for generating a magnetic s

Details Magnetic device having a yoke member for generating a magnetic s Magnetic device having a yoke member for generating a magnetic s

1992-07-31

1994-09-13

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

324318, 335301, H01F 500

Patent

active

053472527

ABSTRACT:
A magnetic device (2) containing a soft magnetic yoke member (3) in its magnetic circuit. The yoke member carries a magnetic flux (.PHI.) produced by a magnetic-field-generating device (7,8) and generates a magnetic stray field (H.sub.s). To reduce this stray field, the present invention surrounds a section (3c) of the yoke member (3) by a compensating-field winding (13), which is electrically excited so that, in addition to the flux (.PHI.) produced by the device (7,8) in the yoke member (3), a supplemental flux (.PHI.') of such magnitude is created that the magnetic dipole moment of the yoke member (3) that produces the stray field (H.sub.s) is at least partially compensated for.

REFERENCES:
patent: 4724412 (1988-02-01), Kalafala
patent: 4937545 (1990-06-01), Chaillout et al.
patent: 5012217 (1991-04-01), Palkovich et al.
patent: 5136273 (1992-08-01), Ohta
Japanese Journal of Applied Physics, vol. 15, No. 9, 1 Sep. 1976, Tokyo, Japan, pp. 1695-1702; K. Tsuno et al.: Effect of Radius of Yoke Curvature on Leakage Flux outside the Yoke in Permanent Magnet Assemblies.
Review of Scientific Instruments, vol. 57, No. 3, 1 Mar. 1986, New York, US, pp. 393-403; A. Bielecki et al.: Zero-Field NMR and NQR Spectrometer.

Affiliated with

Also associated with

Rating

Magnetic device having a yoke member for generating a magnetic s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic device having a yoke member for generating a magnetic s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic device having a yoke member for generating a magnetic s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1123079