Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Patent
1990-07-17
1991-08-27
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
73721, 73727, 73766, G01L 1904
Patent
active
050423070
ABSTRACT:
A pressure sensor circuit has a bridge circuit of strain gauges formed on a silicon diaphragm with two output terminals. The difference in the voltage between the two output terminals is dependent on the pressure applied to the strain gauges. A differential amplifier circuit having an operational amplifier and a feedback circuit amplifies the difference between the two output terminals. A temperature dependent resistor in the feedback circuit provides temperature compensation. An adjustable resistor adjusts the sensitivity of the pressor sensor circuit. Temperature dependent resistors connected between the operational amplifier and reference voltages compensate for zero point temperature fluctuations, and adjustable resistors connected between the operational amplifier and the reference voltages adjust the zero point.
REFERENCES:
patent: 4337665 (1982-07-01), Sato et al.
patent: 4798093 (1989-01-01), Kenoun
Fuji Electric & Co., Ltd.
Woodiel Donald O.
LandOfFree
Amplifying compensation circuit for semiconductor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Amplifying compensation circuit for semiconductor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplifying compensation circuit for semiconductor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1406517