Abstract: A lightning strike counter and a lightning strike counting method are disclosed. The lightning strike counter includes a lightning strike input circuit, a bipolar waveform generating circuit, and a counting circuit. The lightning strike input circuit receives a lightning strike signal from a first lightning strike input end and a second lightning strike input end. The bipolar waveform generating circuit outputs a bipolar waveform signal from a bipolar waveform output end to the counting circuit in response to the lightning strike input circuit receiving the lightning strike signal. The counting circuit outputs a counting output signal from a counting output end in response to receiving the bipolar waveform signal from a counting input end.

Abstract: A protection circuit for Ethernet and a power sourcing equipment having the same are provided. The protection circuit is coupled between a power supply chip and a transmission circuit. The transmission circuit is coupled between an Ethernet chip and an Ethernet connector. The protection circuit includes a bridge rectifier and a protection element to provide the common mode surge protection and the differential mode surge protection at the same time for the power supply chip.

Abstract: A transmission circuit including four transmission component sets for an Ethernet device is provided. Each transmission component set are coupled between an Ethernet connector and an Ethernet chip. Each transmission component set includes a transformer, two capacitors, and four transmission lines (TLs). The transformer includes four terminals and two center taps. Two diagonal terminals of the four terminals are coupled to a ground. The other two diagonal terminals of the four terminals are coupled to the Ethernet connector and, through one of the two capacitors, to the Ethernet chip via two of the four TLs, respectively. The two center taps are coupled to the Ethernet connector and, through the other one of the two capacitors, to the Ethernet chip via the other two of the four TLs, respectively.

Abstract: A protection module and a decoupling component thereof for symmetrical twisted pairs are provided. The protection module includes an input interface, an output interface, a ground interface, a first protection element, the decoupling component and a second protection element. The decoupling component has an inductor, first and second resistors, and first to fifth contacts. The inductor and the first resistor are coupled in series between the third contact and the fourth contact. The inductor and the second resistor are coupled in series between the third contact and the fifth contact. The first contact is located between the inductor and the first resistor. The second contact is located between the inductor and the second resistor. The first and second contacts are coupled to the input interface. The third contact is coupled to the ground interface through the first protection element. The fourth and fifth contacts are coupled to the output interface.

Abstract: A transmission circuit including four transmission component sets for Ethernet is provided. For each of the transmission component sets, a first capacitor and a first inductor are cascaded, the first inductor is coupled to the Ethernet connector via the first transmission line (TL), the first capacitor is coupled to the Ethernet chip via the second TL; a second capacitor and a second inductor are cascaded, the second inductor is coupled to the Ethernet connector via the third TL, the second capacitor is coupled to the Ethernet chip via the fourth TL; a first component set is coupled between a first contact and a second contact, the first contact is located between the first capacitor and the first inductor, and the second contact is located between the second capacitor and the second inductor; and a second component set is coupled between the second TL and the fourth TL.

Abstract: A protection module and a decoupling component thereof for symmetrical twisted pairs are provided. The protection module includes an input interface, an output interface, a ground interface, a first protection element, the decoupling component and a second protection element. The decoupling component has an inductor, first and second resistors, and first to fifth contacts. The inductor and the first resistor are coupled in series between the third contact and the fourth contact. The inductor and the second resistor are coupled in series between the third contact and the fifth contact. The first contact is located between the inductor and the first resistor. The second contact is located between the inductor and the second resistor. The first and second contacts are coupled to the input interface. The third contact is coupled to the ground interface through the first protection element. The fourth and fifth contacts are coupled to the output interface.

Abstract: A transmission circuit including four transmission component sets for Ethernet is provided. Each transmission component set is coupled between an Ethernet connector and an Ethernet chip and has a protection component set. For each transmission component set, a first capacitor is coupled between first and second transmission lines (TLs), and coupled to the Ethernet connector via the first TL and to the Ethernet chip via the second TL; a second capacitor is coupled between third and fourth TLs, and coupled to the Ethernet connector via the third TL and to the Ethernet chip via the fourth TL; first and second inductors are cascaded and coupled between the first and third TLs; a third inductor is coupled between the second and fourth TLs; and a contact between the first and second inductors is coupled to a ground via a fifth TL.

Abstract: A transmission circuit including four transmission component sets for Ethernet is provided. For each of the transmission component sets, a first capacitor and a first inductor are cascaded, the first inductor is coupled to the Ethernet connector via the first transmission line (TL), the first capacitor is coupled to the Ethernet chip via the second TL; a second capacitor and a second inductor are cascaded, the second inductor is coupled to the Ethernet connector via the third TL, the second capacitor is coupled to the Ethernet chip via the fourth TL; a first component set is coupled between a first contact and a second contact, the first contact is located between the first capacitor and the first inductor, and the second contact is located between the second capacitor and the second inductor; and a second component set is coupled between the second TL and the fourth TL.

Abstract: A transmission circuit including four transmission component sets for Ethernet is provided. For each of the transmission component sets, a first capacitor and a first inductor are cascaded, the first inductor is coupled to the Ethernet connector via the first transmission line (TL), the first capacitor is coupled to the Ethernet chip via the second TL; a second capacitor and a second inductor are cascaded, the second inductor is coupled to the Ethernet connector via the third TL, the second capacitor is coupled to the Ethernet chip via the fourth TL; a first component set is coupled between a first contact and a second contact, the first contact is located between the first capacitor and the first inductor, and the second contact is located between the second capacitor and the second inductor; and a second component set is coupled between the second TL and the fourth TL.

Abstract: A transmission circuit including four transmission component sets for Ethernet is provided. Each transmission component set is coupled between an Ethernet connector and an Ethernet chip and has a protection component set. For each transmission component set, a first capacitor is coupled between first and second transmission lines (TLs), and coupled to the Ethernet connector via the first TL and to the Ethernet chip via the second TL; a second capacitor is coupled between third and fourth TLs, and coupled to the Ethernet connector via the third TL and to the Ethernet chip via the fourth TL; first and second inductors are cascaded and coupled between the first and third TLs; a third inductor is coupled between the second and fourth TLs; and a contact between the first and second inductors is coupled to a ground via a fifth TL.