Electricity: measuring and testing – Magnetic – Magnetometers
Reexamination Certificate
2003-10-15
2008-01-08
Aurora, Reena (Department: 2862)
Electricity: measuring and testing
Magnetic
Magnetometers
C324S253000
Reexamination Certificate
active
07317315
ABSTRACT:
A magnetic azimuth measurement apparatus without arithmetic means nor any mechanical motion such as rotation, not affecting its mass production ability because of a simple configuration, and making it possible to measure a azimuth in higher precision, is provided. A trigger signal generates if a condition determining circuit detects that a switched output signal reaches a maximum (positive peak), and this trigger signal enables an output interface circuit to hold a switching signal. The switching signal held by the output interface circuit is a digital representation of a detection coil position parallel to an external magnetic field. Accordingly, it is possible to obtain the azimuth of the external magnetic field with respect to the sensor device.
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Internet Pulication on Permalloy, pubished by Ohtama at www.ohtama.co.jp/eng/tech, date unknown, entire page.
Aizawa Manabu
Ohnuma Hiroshi
Aurora Reena
Whittington Kenneth J
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