Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2011-08-23
2011-08-23
Laxton, Gary L (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C363S021050, C363S021130
Reexamination Certificate
active
08004261
ABSTRACT:
A power supply unit is provided. An output generation circuit generates an output corresponding to an supplied drive signal and supplies the output to a load. A detection circuit receives the output and generates a detection signal in response to the output. A control circuit generates a digital control signal for controlling a value of the output toward a target value in response to the detection signal. A first D/A conversion circuit receives the digital control signal and converts the digital control signal into an analog control signal, the first D/A conversion circuit being capable of setting a reference range for defining a voltage range of the analog control signal. A driving circuit generates the drive signal in response to the analog control signal and supplies the drive signal to the output generation circuit. A range switching circuit switches the reference voltage range of the first D/A conversion circuit between a wide range and a narrow range narrower than the wide range.
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Banner & Witcoff , Ltd.
Brother Kogyo Kabushiki Kaisha
Laxton Gary L
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