Pulse driver for flux gate magnetometer

Details Pulse driver for flux gate magnetometer Pulse driver for flux gate magnetometer

1981-04-24

1984-05-08

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetometers

324255, 331112, G01R 3304

Patent

active

044477767

ABSTRACT:
A driver circuit for a fluxgate magnetometer has a repetition rate controble independent of the magnetometer core winding inductances, and a current-ON interval terminated only by core saturation. In this manner, power consumption is greatly reduced as compared to prior magnetometers without sacrificing low-noise operation. Previous drivers operated in a free-running flyback mode at high pulse repetition rates. The present driver reduces the oscillator repetition rate, and power consumption, by the use of a control loop from the flyback oscillator which signals the end of a current pulse as the magnetometer core rebounds from the saturated state.

REFERENCES:
patent: 2957145 (1960-10-01), Bernstein
patent: 3334619 (1967-08-01), Penn
patent: 3394272 (1968-07-01), Fischman
patent: 3427534 (1969-02-01), Maxwell
patent: 3491281 (1970-01-01), Penn
patent: 3509424 (1970-04-01), Inouye
patent: 3649908 (1972-03-01), Brown
patent: 3681711 (1972-08-01), Hanby
patent: 3809994 (1974-05-01), Ehni
patent: 3882387 (1975-05-01), Vikstrom
patent: 4277751 (1981-07-01), Lawson et al.
patent: 4349752 (1982-09-01), Forte
patent: 4384254 (1983-05-01), Brown

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