Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Chemical analysis
Reexamination Certificate
2007-10-23
2007-10-23
Bui, Bryan (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Chemical analysis
Reexamination Certificate
active
10822714
ABSTRACT:
Radio-frequency currents vary phases of the radio-frequency voltages appearing at both positive and negative input terminals of an operational amplifier depending on inductance and resistance of conductors forming an electronic device. If the phases of radio-frequency voltages appearing at both positive and negative input terminals of the operational amplifier are different, an offset voltage of the operational amplifier varies to change the operation point of the electronic device resulting in malfunction thereof. In a circuit board for electronic device including a conductor layer for circuit portion formed on an insulated circuit board, the electromagnetic interference preventing function can be improved by forming a conductor not connected electrically to anywhere, a part of conductor connected, via a connection layer, to the positive input signal of the operational amplifier of a circuit portion allocated on the conductor layer for circuit and formed of a monolithic IC, and a part of conductor connected to the negative input signal of the operational amplifier.
REFERENCES:
patent: 4464932 (1984-08-01), Ewing et al.
patent: 5150189 (1992-09-01), Shirai et al.
patent: 5756893 (1998-05-01), Kondo et al.
patent: 5824895 (1998-10-01), Itsuji et al.
patent: 6134960 (2000-10-01), Yamakawa et al.
patent: 2003/0087448 (2003-05-01), Abe et al.
patent: 0 367 11 (1989-10-01), None
patent: 036711 (1989-10-01), None
patent: 09 266359 (1997-10-01), None
patent: 5-259686 (1993-10-01), None
patent: 05275862 (1993-10-01), None
patent: 09266359 (1997-10-01), None
Bhat Aditya S.
Bui Bryan
Hitachi , Ltd.
Mattingly, Stanger Malur & Brundidge PC
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