Title: Direction indicator

Abstract: In a direction indicator including a direction sensor having an excitation coil wound on a core and two output coils wound thereon to cross at the right angles with each other, a direct current of given amount is supplied to the two output coils and a direct current magnetic field is produced so that the maximum values of the output signals is made equal by adjusting the gain of the output signals.

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Inventors: Matsumoto, Muneaki (Okazaki, JP)
Kuno, Akira (Oobu, JP)
Numata, Koji (Toyokawa, JP)

Application Number: 06/265688
Filing Date: 1981-05-20
Publication_date: 1983-08-23
Assignee: Nippon, Soken (JP)

Primary Class(es): 33/361 324/247, 324/254, 324/244
Other Classes: G01C17/30; G01C17/00; G01C17/28
US Patent Ref:

3952420	April, 1976	Benjamin et al.	33/361	Digital solid state compass
4262427	April, 1981	Lynch	33/361	Flux valve compass system
4267640	May, 1981	Wu	33/361	System for ascertaining magnetic field direction
4277751	July, 1981	Lawson	33/361	Low-power magnetometer circuit with constant current drive

Other Refs:
Primary Examiner: Haroian, Harry N.
Assistant Examiner:
Attorney: Cushman, Darby & Cushman

Claims: