MAGNETIC FIELD SENSOR WITH FREQUENCY OUTPUT BASED ON MAGNETIC TRANSISTOR Russian patent published in 2024 - IPC G01R33/02 

FIELD: measuring equipment.

SUBSTANCE: invention relates to the field of electromagnetic field measurement, namely to magnetic field sensors based on a multivibrator circuit with magnetic transistors as a sensitive element. Magnetic field sensor (MFS) with a frequency output based on a magnetic transistor comprises a multivibrator circuit, a circuit for generating and transmitting a pulse signal consisting of N links, a circuit of feedback elements. Each link of the circuit for generating and transmitting a pulse signal includes a magnetically sensitive element based on a magnetic transistor and an RC circuit for differentiating the pulse signal. Output of the multivibrator circuit is the output of the device and is connected to the input of the circuit for generating and transmitting a pulse signal. Pulse signal generation and transmission circuit output is connected to negative feedback elements circuit input, output of which is connected to the input of the multivibrator circuit and is also the output of the device.

EFFECT: high noise immunity, sensitivity and accuracy of measuring the value and direction of magnetic induction, simple design and low power consumption.

1 cl, 2 dwg