Accession Number : ADD011053

Title :   Pulse Driver for Flux Gate Magnetometer.

Descriptive Note : Patent,


Personal Author(s) : Brown,R E

Report Date : 08 May 1984

Pagination or Media Count : 6

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 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. (Author)

Descriptors :   *Patents, *Magnetometers, *Pulse rate, *Repetition rate, Oscillators, Low noise, Inductance, Gates(Circuits), Control, Saturation, Winding, Nonlinear systems, Cores, Operation, High rate, Flux(Rate), Loops

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE