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Title: MAGNETOMETER

Abstract

A magnetometer ls described, partlcularly to a device which accurately indicates the polarity and intensity of a magnetlc field. The main feature of the invention is a unique probe construction in combinatlon wlth a magnetic fleld detector system. The probe comprises two coils connected in series opposition for energization with an a-c voltage. The voltage lnduced in a third coll on the probe, a pick-up coil, is distorted by the presence of an external field to produce even harmonic voltages. A controlled d-c current is passed through the energized coils to counter the dlstortlon and reduce tbe even harmonic content to a null. When the null point is reached, the d-c current is a measure of the external magnetic field strength, and the phase of the pickup coil voltage indicates tbe field polarlty.

Inventors:
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4282090
Patent Number(s):
2861242
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-13-008410
NSA Number:
NSA-13-008410
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
PATENTS; COILS; CONTROL; CURRENTS; DETECTION; ELECTRIC POTENTIAL; INDUCTION; INSTRUMENTS; MAGNETIC FIELDS; MAGNETOMETERS; MEASURED VALUES; STABILITY; TESTING

Citation Formats

Leavitt, M.A. MAGNETOMETER. United States: N. p., 1958. Web.
Leavitt, M.A. MAGNETOMETER. United States.
Leavitt, M.A. Tue . "MAGNETOMETER". United States.
@article{osti_4282090,
title = {MAGNETOMETER},
author = {Leavitt, M.A.},
abstractNote = {A magnetometer ls described, partlcularly to a device which accurately indicates the polarity and intensity of a magnetlc field. The main feature of the invention is a unique probe construction in combinatlon wlth a magnetic fleld detector system. The probe comprises two coils connected in series opposition for energization with an a-c voltage. The voltage lnduced in a third coll on the probe, a pick-up coil, is distorted by the presence of an external field to produce even harmonic voltages. A controlled d-c current is passed through the energized coils to counter the dlstortlon and reduce tbe even harmonic content to a null. When the null point is reached, the d-c current is a measure of the external magnetic field strength, and the phase of the pickup coil voltage indicates tbe field polarlty.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {11}
}