Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Reexamination Certificate
2006-10-31
2006-10-31
Karlsen, Ernest (Department: 2829)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
C324S126000, C324S251000
Reexamination Certificate
active
07129691
ABSTRACT:
A low-cost, current sensor suitable for mass production and a manufacturing method thereof are provided. The current sensor is small with high sensitivity and can be packaged in a standard assembly line which is normally used when an integrated circuit is manufactured. Further, it is possible to obtain a sufficient shielding effect against a disturbance flux without degrading the detecting sensitivity of a flux. A first magnetic material50is bonded to the lower part of a current conductor22C. The first magnetic material50has the function of converging and amplifying a flux3generated by the current to be measured. A second magnetic material51is bonded above a magnetic sensor chip20. The second magnetic material51has a shielding function against a disturbance flux entering from the outside.
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Popovic Radivoje
Racz Robert
Shibahara Koji
Yamagata Yo
Asahi Kasei EMD Corporation
Karlsen Ernest
McCormick Paulding & Huber LLP
Sentron AG
Vazquez Arleen M.
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