Accession Number : ADD008551

Title :   Low Power Driver for Flux Gate Magnetometer.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Brown,Robert E

Report Date : 24 Apr 1981

Pagination or Media Count : 14

Abstract : A driver circuit for a fluxgate magnetometer has a repetition rate controllable 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 reduced 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. (Author)

Descriptors :   *Patent applications, *Flux(Rate), *Gates(Circuits), *Magnetometers, Cores, Saturation, Repetition rate, Oscillators, Pulse rate, Loops, High rate, Control

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE