S / R ( set / reset ) pulse generator circuit ( integrated magnetic field sensor HMC1001/1002 )

Published:2012/10/7 21:39:00 Author:Ecco | Keyword: S / R , set , reset, pulse generator, integrated, magnetic field sensor | From:SeekIC

S / R pulse is set / reset pulse, of which amplitude depends on the measurement sensitivity of the MR sensor. For example, Tesla meter is composed of HMC1001/1002, when the minimum measurable flux density is 50nT, the amplitude of pulse current is required not less than 3A; when the minimum measurable flux density is 10 nT, the pulse current amplitude is not less than 4A. The higher measurement sensitivity is, the higher pulse current amplitude is. The circuit uses a microprocessor circuit to generate the S / R pulse, and the circuit is shown as the figure. This circuit uses +16 ~ +20 V power supply, and the pulse current can be more than 4A.



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