GEAR MEASURING MAGNETIC FIELDS Russian patent published in 1998 - IPC

FIELD: measurement technology. SUBSTANCE: proposed gear includes ferroprobe 1, first integrating digitizer 2, capacitor, first scale converter 7, second integrating digitizer 3, alternating voltage amplifier 4, phase-sensitive demodulator 9, second scale converter 10 and third integrating digitizer 11 connected in series. Output of digitizer 11 is connected to compensation winding of ferroprobe 1. Its excitation winding is connected to first output of generator 6, second output of generator 6 is connected to input of control device 5. Its outputs, from first to sixth, are connected to control inputs correspondingly of first integrating digitizer 2, first scale converter 7, second integrating digitizer 3, phase-sensitive demodulator 9, second scale converter 10 and third integrating digitizer 11. Realization of weight integration in conversion channel suppresses internal ferromodulation and external low-frequency and high-frequency noises which considerable increases accuracy and noise immunity of gear. EFFECT: increased accuracy and noise immunity of gear. 5 dwg