An electronic system for a surgical instrument is disclosed. The electronic system comprises a main power supply circuit configured to supply electrical power to a primary circuit. A supplementary power supply circuit configured to supply electrical power to a secondary circuit. A short circuit protection circuit coupled between the main power supply circuit and the supplementary power supply circuit. The supplementary power supply circuit is configured to isolate itself from the main power supply circuit when the supplementary power supply circuit detects a short circuit condition at the secondary circuit. The supplementary power supply circuit is configured to rejoin the main power supply circuit and supply power to the secondary circuit, when the short circuit condition is remedied.

An electronic system for a surgical instrument is disclosed. The electronic system comprises a main power supply circuit configured to supply electrical power to a primary circuit. A supplementary power supply circuit configured to supply electrical power to a secondary circuit. A short circuit protection circuit coupled between the main power supply circuit and the supplementary power supply circuit. The supplementary power supply circuit is configured to isolate itself from the main power supply circuit when the supplementary power supply circuit detects a short circuit condition at the secondary circuit. The supplementary power supply circuit is configured to rejoin the main power supply circuit and supply power to the secondary circuit, when the short circuit condition is remedied.

A data storage device includes an electrical connector configured to receive an input voltage to power electronics of the data storage device. The data storage device further includes a fuse electrically coupled between the electrical connector and the electronics. The fuse is configured to output a signal indicative of current being inputted to the data storage device. The data storage device further includes a controller configured to calculate power based on the input voltage and the signal indicative of the current.

The present application provides a power-down detection circuit and a control method. A low-voltage side power supply is connected to provide an output voltage of the low-voltage side power supply to a power-down detection sub-circuit and provide a standard supply voltage to the power-down detection sub-circuit, a controller and a memory via a voltage conversion circuit. The power-down detection sub-circuit is configured to obtain the output voltage of the low-voltage side power supply, and determine, according to the output voltage of the low-voltage side power supply, whether a power-down event occurs in the low-voltage side power supply. If it is determined that a power-down event occurs, a power-down signal is sent to the controller. The controller receives the power-down signal, and controls the memory to record current information of a high voltage bus sensed by a high-voltage side current sensor.

A low voltage control system, a low voltage protection method for an electronic device, and a computer program product thereof are disclosed. The electronic device includes a power supply and a memory. The low voltage protection method for the electronic device includes the following steps: detecting a current voltage of the power supply; determining whether the current voltage is lower than a first voltage threshold; and if the voltage is lower than the first voltage threshold, a control module cutting off multiple access channels.

A vehicle power supply system includes a power supply path, and an ECU detaching a fault occurrence portion occurring in a part of the power supply path from the power supply path based on a set value lower than a lowest operation voltage of a load and a voltage related to the power supply path. The set value is set within a normal range of the voltage related to the power supply path. The power supply path includes a plurality of electrical connection units connected to the load and a plurality of connection wirings connecting each of the electrical connection units in a loop shape. In a case that a part of voltages related to each of the connection wirings is equal to or less than the set value, the control unit supplies power to the load via another part of the voltages related to each of the connection wirings.

An uninterruptible power supply system is connected to a load, and the uninterruptible power supply system includes an output terminal, a first switch, a second switch, a third switch, a controller, and a protection circuit. In a first period that the load is supplied power by the power unit, the controller turns on the first switch and the third switch and turns off the second switch. In a second period that the load is supplied power by the battery unit, the controller turns off the first switch and turns on the second switch and the third switch. If at least one of the power unit and the output terminal is abnormal, or if at least one of the battery unit and the output terminal is abnormal, the third switch is turned off by at least one of the protection circuit and the controller.

A fall-off protection and reverse-connection protection system and method for a connecting clamp of an automobile starting power supply. The system has an internal battery, a switching circuit, an access device, a connecting clamp, an MCU control circuit, a voltage division circuit for external battery detection, an output connecting clamp current detection circuit and an anti-reverse-connection protection circuit. In the method, voltage conditions of an external power supply can be effectively detected and different operating actions are taken based on the voltage conditions of the external power supply, thus ensuring normal startup.

A circuit for protecting energy storage cells in which at least one energy storage cell is part of an AC battery having at least one module. The at least one module includes at least one half-bridge having two power semiconductor switches, a module storage element and a module controller. The at least one module is connected to the at least one energy storage cell to form a first connection and the first connection between the at least one module and the at least one energy storage cell has a first fuse that can interrupt the first connection. The circuit has a second connection between the module controller of the at least one module and the at least one energy storage cell.

An electronic system for a surgical instrument is disclosed. The electronic system comprises a main power supply circuit configured to supply electrical power to a primary circuit. A supplementary power supply circuit configured to supply electrical power to a secondary circuit. A short circuit protection circuit coupled between the main power supply circuit and the supplementary power supply circuit. The supplementary power supply circuit is configured to isolate itself from the main power supply circuit when the supplementary power supply circuit detects a short circuit condition at the secondary circuit. The supplementary power supply circuit is configured to rejoin the main power supply circuit and supply power to the secondary circuit, when the short circuit condition is remedied.