A current transformer system according to the present invention includes: a sensor CT detachably attached to an electric power transmission/distribution line for detecting the current flowing through the power line by means of electromagnetic induction; a generator CT detachably attached to an electric power transmission/distribution line for generating power by means of electromagnetic induction; and a microprocessor for controlling the sensor CT and the generator CT. According to the present invention, the generator CT is used as the main power source so as to perform independently power supply and facilitate the construction of an additional source in need of additional power.

A current transformer system according to the present invention includes: a sensor CT detachably attached to an electric power transmission/distribution line for detecting the current flowing through the power line by means of electromagnetic induction; a generator CT detachably attached to an electric power transmission/distribution line for generating power by means of electromagnetic induction; and a microprocessor for controlling the sensor CT and the generator CT. According to the present invention, the generator CT is used as the main power source so as to perform independently power supply and facilitate the construction of an additional source in need of additional power.

The present invention discloses a common mode noise restrainer applicable to Ethernet, comprising: a circuit side configured to connect with an integrated circuit; a cable side configured to connect with a cable; a plurality of transformers set between the circuit side and the cable side; and a plurality of common mode chokes composed of a first part of the common mode chokes and a second part of the common mode chokes in which the first part of the common mode chokes is set between the circuit side and the plurality of transformers and the second part of the common mode chokes is set between the cable side and the plurality of transformers while the one or more transformer(s) connected with the first part of the common mode chokes are not identical to the one or more transformer(s) connected with the second part of the common mode chokes.

The present invention discloses a common mode noise restrainer applicable to Ethernet, comprising: a circuit side configured to connect with an integrated circuit; a cable side configured to connect with a cable; a plurality of transformers set between the circuit side and the cable side; and a plurality of common mode chokes composed of a first part of the common mode chokes and a second part of the common mode chokes in which the first part of the common mode chokes is set between the circuit side and the plurality of transformers and the second part of the common mode chokes is set between the cable side and the plurality of transformers while the one or more transformer(s) connected with the first part of the common mode chokes are not identical to the one or more transformer(s) connected with the second part of the common mode chokes.

The present invention discloses a common mode noise restrainer applicable to Ethernet, comprising: a circuit side configured to connect with an integrated circuit; a cable side configured to connect with a cable; a plurality of transformers set between the circuit side and the cable side; and a plurality of common mode chokes composed of a first part of the common mode chokes and a second part of the common mode chokes in which the first part of the common mode chokes is set between the circuit side and the plurality of transformers and the second part of the common mode chokes is set between the cable side and the plurality of transformers while the one or more transformer(s) connected with the first part of the common mode chokes are not identical to the one or more transformer(s) connected with the second part of the common mode chokes.

The present invention discloses a common mode noise restrainer applicable to Ethernet, comprising: a circuit side configured to connect with an integrated circuit; a cable side configured to connect with a cable; a plurality of transformers set between the circuit side and the cable side; and a plurality of common mode chokes composed of a first part of the common mode chokes and a second part of the common mode chokes in which the first part of the common mode chokes is set between the circuit side and the plurality of transformers and the second part of the common mode chokes is set between the cable side and the plurality of transformers while the one or more transformer(s) connected with the first part of the common mode chokes are not identical to the one or more transformer(s) connected with the second part of the common mode chokes.

A semiconductor device includes: a first chip mounting portion and a second chip mounting portion adjacent to each other in a first direction; a first semiconductor chip and a third semiconductor chip adjacent to each other in a second direction and mounted on the first chip mounting portion; and a second semiconductor chip mounted on the second chip mounting portion. The third semiconductor has: one or more first transformers used to transmit a signal from the first semiconductor chip to the second semiconductor chip; and one or more second transformers used to transmit a signal from the second semiconductor chip to the first semiconductor chip. In plan view, the first and second transformers are arranged along a side facing the second semiconductor chip, and the one of more first transformers are arranged closer to the first semiconductor chip than the one of more second transformers.