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.

A polarity detector is configured to detect whether a polarity of one of the secondary direct current terminals is reversed in polarity consistent with an improper connection of a removable load or the removable direct current energy source to the secondary direct current terminals. A protection module or transient clamp comprises a protection semiconductor switch with protection switched terminals and a protection control terminal. A controller is configured to control a plurality of switches of the circuit breaker and the protection module via a driver. Further, the controller is configured to open or activate the circuit breaker responsive to a signal or data message of the polarity detector detecting the improper connection.

A polarity detector is configured to detect whether a polarity of one of the secondary direct current terminals is reversed in polarity consistent with an improper connection of a removable load or the removable direct current energy source to the secondary direct current terminals. A protection module or transient clamp comprises a protection semiconductor switch with protection switched terminals and a protection control terminal. A controller is configured to control a plurality of switches of the circuit breaker and the protection module via a driver. Further, the controller is configured to open or activate the circuit breaker responsive to a signal or data message of the polarity detector detecting the improper connection.

Provided is a reverse current switch. The reverse current switch includes: a comparison unit including a first input end, a second input end, and a first output end; and a switch resistance unit, where a first end of the switch resistance unit is connected to the first input end, a second end of the switch resistance unit is connected to the second input end, and a third end of the switch resistance unit is connected to the output end of the comparison unit, and the switch resistance unit is controlled by a voltage of the first output end. This reverse current switch has a simple structure and can implement working under low voltage conditions.

An electronic circuit for providing protection for an energy supply for a receiving device, includes: a supply path for connecting the receiving device to a voltage source, wherein the supply path has at least one first switching component in series with a second switching component, and also a measuring resistor, a functional assembly for providing protection against an overcurrent in the supply path, a functional assembly for detecting a connected receiving device, a functional assembly for providing protection against a polarity reversal for the voltage of the supply path, and a functional assembly for detecting a ground short for the supply path.

An inductive load control device includes: an electric path configured to connect an external DC power supply and an inductive load drive unit; an opening and closing unit configured to connect or disconnect the electric path; a voltage detection unit configured to detect a voltage difference between ends of the opening and closing unit; and a failure detection unit configured to detect a failure of the opening and closing unit. The opening and closing unit includes: series-connected first and second switching elements; and a diode connected in series with the first switching element and in parallel with the second switching element such that an anode of the diode is disposed in a direction of the DC power supply. The failure detection unit is configured to detect that the second switching element is in a non-conduction failure, based on the voltage difference.

A method for analyzing power quality events in an electrical system includes processing electrical measurement data from or derived from energy-related signals captured by at least one of a plurality of metering devices in the electrical system to generate or update a plurality of dynamic tolerance curves. Each of the plurality of dynamic tolerance curves characterizes a response characteristic of the electrical system at a respective metering point of a plurality of metering points in the electrical system. Power quality data from the plurality of dynamic tolerance curves is selectively aggregated to analyze power quality events in the electrical system.

A system includes a first transistor having a first control input and first and second current terminals. The first current terminal couples to an input voltage node. A second transistor has a second control input and third and fourth current terminals. The third current terminal couples to the second current terminal at a first node. The fourth current terminal couples to an output voltage node. A drive circuit is configured to charge a capacitor maintain the first transistor in an off state responsive to a negative voltage on the input voltage node, and, responsive to a negative voltage on the input voltage node, to cause the charge from the capacitor to be used to turn off the first transistor. The system provides a voltage to a load coupled to the output voltage node.

A system includes a power switch configured to receive a voltage on a first terminal. The first terminal is coupled to a voltage regulator. The power switch is also configured to provide the voltage to a second terminal. The second terminal is coupled to a VBUS terminal of a Universal Serial Bus Type-C (USB-C) connector. The system also includes a USB controller coupled to the power switch and to the first terminal and the second terminal. The the USB controller is configured to detect a first voltage at the first terminal and to detect a second voltage at the second terminal. The USB controller is configured to adjust operation of the power switch in response to determining that the second voltage is above a particular voltage or within a particular voltage range.