Pressure sensor including a resistor commutator for providing un

Details Pressure sensor including a resistor commutator for providing un Pressure sensor including a resistor commutator for providing un

1977-10-04

1979-03-06

Grimm, Siegfried H.

Oscillators

With device responsive to external physical condition

73387, 73DIG6, 331179, 338128, 338194, 338309, G01L 902, H01C 1012, H01C 1046, H03B 520

Patent

active

041433351

ABSTRACT:
A pressure transducer such as for use in a radiosonde includes a substrate and a plurality of conductive contacts formed thereon. An arm is movable over the contacts in accordance with the sensed ambient pressure. A group of resistors of different values of resistance are operatively connected to the contacts whereby each contact is characterized by a unique value of resistance. The resistance may be connected as the frequency-determining element of an oscillator, such that each unique value of resistance may be converted to a unique corresponding frequency and upon decoding determine which unique contact is operatively connected.

REFERENCES:
patent: 3019397 (1962-01-01), Cosby
patent: 3613042 (1971-10-01), Leerkamp et al.
patent: 3656066 (1972-04-01), Reynal
patent: 3668930 (1972-06-01), Strauss

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