Provided is a semiconductor circuit connected to a load circuit and configured to control power supply to the load circuit, comprising: a power line to which a power voltage is applied; an overvoltage protection unit that has an output unit configured to interrupt power supply from the power line to the load circuit when the power voltage in the power line is overvoltage; and a state notification unit configured to notify the outside of a state signal indicating whether the output unit is interrupting the power supply.

A protection apparatus includes an interface, a protection switch, a direct current bus, and a controller. The apparatus is connected to at least two photovoltaic units via the interface, the at least two photovoltaic units are coupled to the direct current bus inside the apparatus to form at least two branches, and each branch is connected to at least one photovoltaic unit. The protection switch is configured to disconnect all or some of the photovoltaic units from the direct current bus, to enable a maximum of three photovoltaic units to be directly connected in parallel. According to the apparatus, a photovoltaic unit and a line are protected with a low power loss when a photovoltaic power generation system is faulty.

A protection apparatus includes an interface, a protection switch, a direct current bus, and a controller. The apparatus is connected to at least two photovoltaic units via the interface, the at least two photovoltaic units are coupled to the direct current bus inside the apparatus to form at least two branches, and each branch is connected to at least one photovoltaic unit. The protection switch is configured to disconnect all or some of the photovoltaic units from the direct current bus, to enable a maximum of three photovoltaic units to be directly connected in parallel. According to the apparatus, a photovoltaic unit and a line are protected with a low power loss when a photovoltaic power generation system is faulty.

A network apparatus includes a hybrid data/power cable further including a power conductor and a data conductor extending between a first end and a second end thereof, the first end of the hybrid data/power cable terminating with a first connector head. The first connector head includes a fuse element coupled in series with the power conductor of the hybrid data/power cable. A remote device is coupled to the second end of the hybrid data/power cable for receiving a data signal from the data conductor of the hybrid data/power cable and a DC voltage from the power conductor of the first hybrid data/power cable. The remote device includes a current-limiting circuit coupled in series with the power conductor of the first hybrid data/power cable to produce a DC voltage at an output of the current-limiting circuit. The remote device further includes a buck/boost converter coupled to the output of the current-limiting circuit for adjusting the DC voltage. An external power supply may also be provided for the remote device.

A staple cartridge for use with a surgical stapler and surgical stapling systems are disclosed. The staple cartridge comprises a cartridge body having a tissue-contacting surface. One or more light emitting diodes (LEDs) are positioned at the edges of the tissue-contacting surface. A plurality of staple drivers is located within the cartridge body each supporting a staple.

A staple cartridge for use with a surgical stapler and surgical stapling systems are disclosed. The staple cartridge comprises a cartridge body having a tissue-contacting surface. One or more light emitting diodes (LEDs) are positioned at the edges of the tissue-contacting surface. A plurality of staple drivers is located within the cartridge body each supporting a staple.

The present disclosure provides a method for controlling a surgical instrument. The method includes connecting a power assembly to a control circuit, wherein the power assembly is configured to provide a source voltage, energizing, by the power assembly, a voltage boost convertor circuit configured to provide a set voltage greater than the source voltage, and energizing, by the voltage boost convertor, one or more voltage convertors configured to provide one or more operating voltages to one or more circuit components.

The present disclosure provides a method for controlling a surgical instrument. The method includes connecting a power assembly to a control circuit, wherein the power assembly is configured to provide a source voltage, energizing, by the power assembly, a voltage boost convertor circuit configured to provide a set voltage greater than the source voltage, and energizing, by the voltage boost convertor, one or more voltage convertors configured to provide one or more operating voltages to one or more circuit components.

A battery control apparatus includes: an MCU including a first control terminal, a first sensing terminal connected to a first node, a second control terminal, a third control terminal, a second sensing terminal connected to a second node, and a fourth control terminal; a relay including a switch and a coil connected between the first node and the second node; and a first reduction circuit including a first transistor having a first gate connected to the first control terminal and a first end connected to the first node, and a second transistor having a second gate connected to the second control terminal and the MCU controls the first gate and the second gate to respectively allow the first transistor to be turned on and the second transistor to be turned off when there is no voltage change of the first node.

A battery control apparatus includes: an MCU including a first control terminal, a first sensing terminal connected to a first node, a second control terminal, a third control terminal, a second sensing terminal connected to a second node, and a fourth control terminal; a relay including a switch and a coil connected between the first node and the second node; and a first reduction circuit including a first transistor having a first gate connected to the first control terminal and a first end connected to the first node, and a second transistor having a second gate connected to the second control terminal and the MCU controls the first gate and the second gate to respectively allow the first transistor to be turned on and the second transistor to be turned off when there is no voltage change of the first node.