Variable Resistor Arrangement, Measurement Bridge Circuit And Method For Calibrating A Measurement Bridge Circuit

• Main Authors: MUELLER-FIEDLER ROLAND, HERRMANN INGO, KRUEGER VERONIQUE
• Format: Patent
• Language: Chinese; English
• Published: 03.09.2014
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

The invention relates to a measurement bridge circuit (100), having a first and a second branch. The first branch contains a first resistor (R2(x)) which is sensitive to measured variables and an invariable resistor (Rfix,1) connected in series, with a first tap point (104) being arranged between the first resistor (R2(x)) which is sensitive to measured variables and the invariable resistor (Rfix,1). The second branch contains a second resistor (R1(x))which is sensitive to measured variables and a variable resistor arrangement (102) connected in series. The variable resistor arrangement (102) has a first component (Rfix,2) having an invariable electrical resistance value and a second component (M) having a variable electrical resistance value, the second component being connected in parallel with the first component (Rfix,2) in order to vary a total electrical resistance value for the resistor arrangement (102). A second tap point (106) is arranged between the second resistor (R1(x)) which is sensitive to mea