Resistor with temperature coefficient of resistance (TCR) compensation
First Claim
1. A resistor with temperature coefficient of resistance (TCR) compensation, the resistor comprising:
- a resistive strip disposed between first and second conductive strips;
a first main terminal and a first voltage sense terminal formed in the first conductive strip;
a second main terminal and a second voltage sense terminal formed in the second conductive strip;
a first rough TCR calibration slot located between the first voltage sense terminal and the first main terminal, the first rough TCR calibration slot having an opening facing away from the resistive strip, and a depth that extends toward the resistive strip;
a second rough TCR calibration slot located between the second voltage sense terminal and the second main terminal, the second rough TC calibration slot having an opening facing away from the resistive strip, and a depth that extends toward the resistive strip; and
a fine TCR calibration slot formed between the first and second voltage sense terminals.
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Accused Products
Abstract
A current sense resistor and a method of manufacturing a current sensing resistor with temperature coefficient of resistance (TCR) compensation are disclosed. The resistor has a resistive strip disposed between two conductive strips. A pair of main terminals and a pair of voltage sense terminals are formed in the conductive strips. A pair of rough TCR calibration slots is located between the main terminals and the voltage sense terminals, each of the rough TCR calibration slots have a depth selected to obtain a negative starting TCR value observed at the voltage sense terminals. A fine TCR calibration slot is formed between the pair of voltage sense terminals.
21 Citations
20 Claims
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1. A resistor with temperature coefficient of resistance (TCR) compensation, the resistor comprising:
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a resistive strip disposed between first and second conductive strips; a first main terminal and a first voltage sense terminal formed in the first conductive strip; a second main terminal and a second voltage sense terminal formed in the second conductive strip; a first rough TCR calibration slot located between the first voltage sense terminal and the first main terminal, the first rough TCR calibration slot having an opening facing away from the resistive strip, and a depth that extends toward the resistive strip; a second rough TCR calibration slot located between the second voltage sense terminal and the second main terminal, the second rough TC calibration slot having an opening facing away from the resistive strip, and a depth that extends toward the resistive strip; and a fine TCR calibration slot formed between the first and second voltage sense terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of manufacturing a resistor with temperature coefficient of resistance (TCR) compensation, the method comprising:
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disposing a resistive strip between first and second conductive strips; forming a first main terminal and a first voltage sense terminal in the first conductive strip, the first rough TCR calibration slot having an opening facing away from the resistive strip, and a depth that extends toward the resistive strip; forming a second main terminal and a second voltage sense terminal in the second conductive strip, the second rough TC calibration slot having an opening facing away from the resistive strip, and a depth that extends toward the resistive strip; forming a first rough TCR calibration slot between the first voltage sense terminal and the first main terminal; forming a second rough TCR calibration slot between the second voltage sense terminal and the second main terminal; and forming a fine TCR calibration slot between the first and second voltage sense terminals. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A resistor with temperature coefficient of resistance (TCR) compensation, the resistor comprising:
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a resistive strip disposed between first and second conductive strips, each of the first and second conductive strips having a defined internal area; a first main terminal and a first voltage sense terminal formed within the defined internal area of the first conductive strip; a second main terminal and a second voltage sense terminal formed within the defined internal area of the second conductive strip; and first and second TCR calibration slots, each having a plurality of TCR calibration legs located between the first and second main terminals. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification