| 摘要 |
A device is used for detecting and obtaining the power of the direct current (DC) from a DC and VDC of an electric facility, and includes an amplifying device for amplifying the DC and VDC values from the electric facility. A converting device may be used to convert the DC and VDC values into digital values and to supply the digital DC and VDC values into a calculator or a processor device which may calculate from the DC and VDC values into a power value which may be displayed in a displayer device. The user may know how much power has been consumed for each electric facility.
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