Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2006-08-08
2006-08-08
Tsai, Carol S. W. (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C702S189000
Reexamination Certificate
active
07089128
ABSTRACT:
A control circuit of a DC fan motor for start with high voltage and high rotational speed with low voltage at least includes an input unit, an output unit, a control unit and a comparator. The input unit is connected to the comparison unit and the control unit for the power being inputted to operate the control circuit. The output unit has motor coil sets to be connected to the control unit such that the output unit can be driven by way of being controlled with the control unit. The comparison unit is connected to the control unit to control output current of the control unit. Hence, while the motor starts in a condition of being high voltage, the control element can prevent from being burned out due to excessively large current. Further, the motor fan can maintain a high constant rotational speed with low voltage output to enhance capability of heat dissipation and power saving.
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Asia Vital Component Co., Ltd.
Gutierrez Anthony
Tsai Carol S. W.
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