Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Patent
1980-10-06
1982-06-08
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
73727, 73754, 338 3, 338 4, G01L 1904
Patent
active
043333494
ABSTRACT:
There is disclosed a balancing network for a piezoresistive semiconductor bridge configuration. The balancing network comprises a plurality of series resistors arranged in series with the sensing elements in the bridge configuration. Each resistor differs from the previous one according to a power of two to form a binary ladder arrangement. The individual resistors are associated with terminals to allow the transducer manufacturer to selectively short one or more resistors to provide zero balance compensation. The resistors are located on the nonactive portion of the semiconductor substrate and are fabricated by the same techniques employed for fabrication of the semiconductor piezoresistive sensing elements to assure temperature tracking of the unit with the desired temperature operating range.
REFERENCES:
patent: 3245252 (1966-04-01), First et al.
patent: 3646815 (1972-03-01), Martin et al.
patent: 3873956 (1975-03-01), Kurtz et al.
patent: 3886799 (1975-06-01), Billette et al.
patent: 3900811 (1975-08-01), Kurtz et al.
patent: 4016644 (1977-04-01), Kurtz et al.
Kurtz Anthony D.
Mallon Joseph R.
Kulite Semiconductor Products Inc.
Plevy Arthur L.
Woodiel Donald O.
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