Signal conversion circuit

Details Signal conversion circuit Signal conversion circuit

1984-04-23

1986-09-09

Heyman, John S.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307491, 307310, H04R 300, H01C 706

Patent

active

046111298

ABSTRACT:
An electronic circuit uses a two input operational amplifier for converting a pressure into an electrical signal. The bias potentials at the two inputs are equal to each other in the absence of pressure. The bias potential is applied to one input via a pressure sensitive resistor comprising a semiconductor diaphram with a resistance diffused thereon. When pressure appears, the resistance changes and there is a difference of potential at the two inputs, which is processed into the electrical signal.

REFERENCES:
patent: 3705316 (1972-12-01), Burrous et al.
patent: 3836796 (1974-09-01), Solomon et al.
patent: 3893035 (1975-07-01), Higgens
patent: 4435653 (1984-03-01), Matui et al.
patent: 4463274 (1984-07-01), Swartz
"Characteristics and Application of a Semiconductor Pressure Sensor", Published in the Japanese Technical Magazine, Sensor Technique, vol. 2, No. 8, (Jul. 1982), pp. 97-103.

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