Miniature magnetic field sensor e.g. fluxgate, has small, ferromagnetic and helical magnetic core, which measures magnitude and direction of magnetic fields or continuous alternating fields of low frequency

摘要

The sensor e.g. fluxgate has a small, ferromagnetic and helical magnetic core, which measures the magnitude and direction of magnetic fields or continuous alternating fields of low frequency. The sensor consists of a tubular copper substrate of small sized polycrystalline, which is 1 centimeter long and 2 millimeter in diameter, and has two propellers of ferromagnetic material deposited by electrolysis in opposite directions.