Electrical transmission or interconnection systems – Switching systems – Switch actuation
Reexamination Certificate
2005-12-28
2008-09-16
Sherry, Michael J (Department: 2836)
Electrical transmission or interconnection systems
Switching systems
Switch actuation
Reexamination Certificate
active
07425781
ABSTRACT:
In an electric power switching apparatus a control circuit generates a switching control signal, for controlling successive current switching operations, as a of succession of pulse period patterns with each pulse period pattern made up of one or more successive pulses each having an identical pulse period, and with successive pulse period patterns constituting the control signal having respectively different values of pulse period. The noise power of high-frequency components resulting from the current switching is thereby dispersed along the frequency spectrum, reducing resultant radio noise interference.
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Japanese Office Action for Patent Application No. 2004-380552. May 2, 2008. pp. 1-2.
Goto Shinya
Kawasaki Koji
Amrany Adi
Denso Corporation
Nippon Soken Inc.
Oliff & Berridg,e PLC
Sherry Michael J
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