Magnetic field strength measuring apparatus with triangular wave

Details Magnetic field strength measuring apparatus with triangular wave Magnetic field strength measuring apparatus with triangular wave

1979-08-22

1981-09-15

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetometers

G01R 3304

Patent

active

042900182

ABSTRACT:
A magnetic field directional magnetic sensor wherein the magnetic material has a large length-to-diameter ratio and comprises two coils wound around the magnetic material which also have a small diameter compared to the length. A first coil is driven with a triangular waveform signal. After each occurrence of saturation, a voltage will be produced by the output coil. The voltage amplitude of the drive signal can be measured upon the occurrence of each of the output pulses from the second coil with the measuring or detection of the drive signal being used in a sample and hold circuit which averages the detected values for a determination of magnetic field being sensed in the longitudinal or long direction of the magnetic sensor.

REFERENCES:
Ling, "Fluxgate Magnetometer for Space Application", 3/1964, J. Spacecraft, vol. 1, No. 2, pp. 175-180.

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