Position sensor

Details Position sensor Position sensor

1980-08-29

1982-07-20

Gill, James J.

Measuring and testing

Vibration

Sensing apparatus

324208, G01H 1100

Patent

active

043399533

ABSTRACT:
A position sensor comprising a ferromagnetic member operatively connected to an operation means and movable in response to displacement of the operation means, a magnetically soft member surrounded by an electrical coil secured adjacent to a range of movement of the ferromagnetic member, and a displacement pulse phase conversion unit including a permanent magnet. Voltage pulses are applied to one end of the electrical coil, the other end of which is connected in series with a resistor. A voltage drop across the resistor is detected and a time lag of the resistor voltage, which time lag corresponds to displacement of the operation means, is provided in the form of an analog voltage or a digital code.

REFERENCES:
patent: 4140971 (1979-02-01), Blincoe

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