Low Power Driver for Flux Gate Magnetometer.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 24, 1981
- Accession Number
- ADD008551
Entities
People
- Robert E. Brown
Organizations
- United States Department of the Navy