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:
- OSTI Identifier:
- 4282090
- Patent Number(s):
- 2861242
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
- 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}
}