US Patent No: 4,241,303

Number of patents in Portfolio can not be more than 2000

Linearization circuit

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Abstract

A voltage linearization circuit for use with a resistance thermometer device or a thermocouple to produce a nearly linear output signal from a non-linear input signal. The circuit produces a voltage proportional to the square of the input voltage through the use of operational amplifiers and field-effect transistors connected in voltage dividing arrangements, and combines this second order voltage, or a reduced magnitude thereof, with the original input voltage to produce a nearly linear output signal.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ELSAG INTERNATIONAL B.V., A CORP. OF THE NETHERLANDSNEW ORLEANS, LA207

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Thompson, William L Frederick, MD 30 259

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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
MEASUREMENT SPECIALTIES, INC. (2)
7,484,887 Digitally modified resistive output for a temperature sensor 0 2004
7,641,390 Digitally modified resistive output for a temperature sensor 0 2008
 
ABERDEEN UNIVERSITY, KINGS COLLEGE, OLD ABERDEEN, AB9 1FX. A BRITISH COMPANY (1)
4,932,250 Multi point sensor 7 1988
 
FMC CORPORATION (1)
4,395,678 Linearizing circuit for meter displays 3 1980
 
NEOTRONICS LIMITED (1)
4,423,487 Apparatus for measuring the efficiency of combustion appliances 13 1980
 
NORDSON CORPORATION (1)
4,467,182 Control circuit 18 1981
 
SIEMENS AKTIENGESELLSCHAFT (1)
5,969,568 Power output element of an amplifier/transmitter 0 1997
 
SOCIETE ANONYME: VECTAVIB (1)
5,311,140 Circuit for measuring variations in the capacitance of a variable capacitor using a continuously rebalanced detection bridge 16 1992
 
SOLOMAT S.A. (1)
4,349,886 Device for modifying or controlling the shape of an electrical output signal 11 1980
 
STMICROELECTRONICS S.A. (1)
6,583,607 Linear regulator with a selectable output voltage 9 2000