Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hiroshi Usui0
Date of Patent
November 3, 2009
0Patent Application Number
119404040
Date Filed
November 15, 2007
0Patent Primary Examiner
Patent abstract
A dropper type regulator of the invention, in which a semiconductor device is connected in series between a DC power supply and a voltage output terminal, extracts a second voltage from the first voltage of the DC power supply; when the driving voltage of the semiconductor device is detected as being larger than a preset first threshold value, the voltage difference occurring between the input and output terminals of the semiconductor device is detected, and when this voltage difference is detected as being larger than a second threshold value, an overload protection circuit performs overload protection.
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