Electronic component, in particular current sensor
AssigneeIsabellenhuette Heusler GmbH & Co. KG
InventorUllrich Hetzler
Life of this patent
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Abstract
The invention relates to an electronic component (1), in particular a current sensor, having a resistance element (5) made of a resistance material, a first connection part (3) made of a conductor material for introducing an electrical current into the resistance element (5), and a second connection part (4) made of a conductor material for discharging the electrical current from the resistance element (5). According to the invention, the component (1) has a temperature-measuring device (8) for measuring a temperature difference between the resistance element (5), on the one hand, and at least one of the two connection parts (3, 4), on the other hand, in order to derive the current from the temperature difference.
Claims21
An electronic component, which is a current sensor, comprising:
- a) a resistance element comprising a resistance material;
- b) a first connection part comprising a conductor material for leading an electrical current into the resistance element;
- c) a second connection part comprising a conductor material for leading the electrical current out of the resistance element, wherein the conductor material of the first and second connection parts has a smaller specific electric resistance than the resistance material of the resistance element;
- and
- d) a measurement value recording system, which is arranged to measure the electrical current flowing through the electronic component,
- d1) wherein the measurement value recording system is constructionally integrated into the electronic component, and
- d2) wherein the measurement value recording system is arranged to measure the electrical current flowing through the electronic component according to a number of different physical measuring principles,
- d3) wherein one of the measurement principles is a four wire measurement, wherein the electrical current to be measured is passed over two contacts through the resistance element while the electrical voltage is measured via two further contacts, which drops over the resistance element,
- d4) wherein the measurement value recording system comprises a voltage measurement unit, which measures the electrical voltage which drops over the resistance element, wherein:
- the voltage measurement unit is constructionally integrated into the electronic component;
- the voltage measurement unit has a printed circuit board, which is fastened to the connection parts and/or to the resistance element;
- and
- the voltage measurement unit has two voltage tapping points, which are connected electrically with both connection parts in order to measure the voltage, which drops over the resistance element.
Dependencies are inferred from the claim text.