Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Atsushi Okonogi0
Kazuaki Takano0
Kazuto Nakamura0
Ryuji Fukute0
Date of Patent
October 16, 2007
0Patent Application Number
116137020
Date Filed
December 20, 2006
0Patent Primary Examiner
Patent abstract
A power supply apparatus controls the gate and drain power supplies at the rise time so that an output voltage of the gate power rises earlier than that of the drain power supply. Another power supply control apparatus controls the gate and drain power supplies at the fall time so that an output voltage of the gate power supply fails later than that of the drain power supply. Another power supply control apparatus turns off the drain supply of the FET among power supplies when it is detected by a voltage monitor whenever either of output voltages or the power supplies are not within said specified range.
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