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AssigneeHioki Denki Kabushiki Kaisha
InventorKoichi Yanagisawa
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A variable capacitance circuit includes a capacitance changing structure constructed by connecting a first construction unit, a second construction unit, a third construction unit, and a fourth construction unit, which each include a first electric element that hinders transmission of a direct current (DC) signal and has a capacitance that changes in accordance with the magnitude of an absolute value of an applied voltage, in the mentioned order in a ring. A voltage measuring apparatus measures the voltage of a measured object and includes a detection electrode capable of being disposed facing the measured object and the variable capacitance circuit described above. A power measuring apparatus includes a current measuring apparatus that measures current flowing in a measured object and the voltage measuring apparatus that measures the voltage of the measured object.
A variable capacitance circuit comprising a capacitance changing structure constructed by connecting a first construction unit, a second construction unit, a third construction unit, and a fourth construction unit, which each include a first electric element that hinders transmission of a direct current (DC) signal and has a capacitance that changes in accordance with the magnitude of an absolute value of an applied voltage, in the mentioned order in a ring.
A variable capacitance circuit comprising a capacitance changing structure constructed by connecting a first construction unit, a second construction unit, a third construction unit, and a fourth construction unit in the mentioned order in a ring, wherein the construction units in one pair out of a pair of the first construction unit and the fourth construction unit and a pair of the second construction unit and the third construction unit each include a first electric element that hinders transmission of a DC signal and has a capacitance that changes in accordance with the magnitude of an absolute value of an applied voltage and the construction units in the other pair each include a second electric element that permits transmission of an alternating current (AC) signal.
A variable capacitance circuit comprising a capacitance changing structure constructed by connecting a first construction unit, a second construction unit, a third construction unit, and a fourth construction unit in the mentioned order in a ring, wherein the construction units in one pair out of a pair of the first construction unit and the second construction unit and a pair of the third construction unit and the fourth construction unit each include a first electric element that hinders transmission of a DC signal and has a capacitance that changes in accordance with the magnitude of an absolute value of an applied voltage and the construction units in the other pair each include a third electric element that hinders transmission of a DC signal but permits transmission of an AC signal.
Dependencies are inferred from the claim text.