Abstract: A surge arrester assembly comprises a ground connector with a clamping component and line connector assembly that incorporates non-bolted mechanical and electrical connections. The assembly connections permit the use of insulating hot sticks for installation and removal of the arrester module for safe and rapid removal and replacement of expired surge arresters. The clamp and line connector are reusable for replacement of surge arresters.

Abstract: An electrostatic discharge protection device is provided. A voltage selection circuit selects a voltage having a higher voltage value among a reference voltage and a voltage on a conductive path and supply the selected voltage to a RC latch self-feedback circuit, so that the RC latch self-feedback circuit ties a voltage of an input end of a RC control circuit when the electrostatic discharge does not occur, and disconnect a switch that conducts an electrostatic current.

Abstract: According to the embodiment, the electrostatic chuck includes a ceramic dielectric substrate having a first major surface and a second major surface on an opposite side to the first major surface, a base plate supporting the ceramic dielectric substrate and including a gas introduction path, and a first porous part provided at a position between the base plate and the first major surface and being opposite to the gas introduction path. The ceramic dielectric substrate includes a first hole part positioned between the first major surface and the first porous part. At least one of the ceramic dielectric substrate or the first porous part includes a second hole part positioned between the first hole part and the first porous part, and a dimension of the second hole part is smaller than a dimension of the first porous part and larger than a dimension of the first hole part.

Abstract: A secondary-battery protection circuit is configured to, in response to detecting that a first switching circuit is turned on and a second switching circuit is turned on, supply a first output voltage to a first load between a first terminal and a second terminal; and supply a third output voltage to a second load between the first terminal and a third terminal, the third output voltage indicating the sum of the first output voltage and a second output voltage, the second output voltage corresponding to a voltage across a second secondary battery. In response to detecting that the first switching circuit is turned off and the second switching circuit is turned on, the secondary-battery protection circuit is configured to stop supplying the first output voltage to the first load; and stop supplying the third output voltage via the first terminal and the third terminal.

Abstract: A power supply device includes battery circuit modules each having a battery, a first switching element S1 connected in parallel to the battery, and a second switching element S2 connected in series to the battery between the battery and the first switching element S1, the second switching element S2 being turned off when the first switching element S1 is turned on, a battery circuit module group in which the battery circuit modules are connected in series, and a control circuit for outputting, at intervals of a certain time, a gate signal for turning on and off the first switching element S1 and the second switching element S2 to the battery circuit modules.

Abstract: A circuit to mitigate arc failures in an electrical power distribution system can include a solid state distribution system connected to a source of power and to a load, a solid state power controller (SSPC) having a set of field effect transistors (FETs) responsive to command signals from the SSPC wherein an arc in a wire bond of a failed FET can trigger a predetermined sequence to quench the arc and isolate remaining wire bond material in the failed FET from contaminating a creepage path.

Abstract: Circuits, systems and methods are provided wherein a bypass circuit provides an auxiliary current path to supply current from a power supply line to an electrical load. The bypass circuit is used during a low-power mode, and consumes less quiescent power than a main current path that provides current from the power supply line to the electrical load during normal operation. The bypass circuit includes a current limiter and a comparator, and generates a high-current detection signal responsive to the comparator detecting that a current through the current limiter exceeds a maximum allowed or expected current.

Abstract: A ZVS boost converter can include a boost inductor coupled to a DC voltage bus, a main switch configured to selectively store energy from the DC voltage bus in the boost inductor and deliver the stored energy to a load, a synchronous rectifier, and a resonant circuit coupled across the main switch. The resonant circuit can allow for zero voltage switching of the main switch and the synchronous rectifier switch. The resonant circuit can be a series resonant RC circuit. The boost converter can be operated in a continuous current mode, with the main switch operated at a constant frequency with a variable duty cycle to maintain output voltage regulation and the synchronous rectifier operated complementarily to the main switch. The duty cycle of the main switch can be controlled using a current window controller. The ZVS boost converter may be incorporated in a power factor corrected AC-DC converter.

Abstract: Methods and apparatus for extending discharge over-current trip time in a battery protection circuit are disclosed. The protection circuit includes a safety circuit that asserts a first discharge over-current indicator when the discharge current of the battery exceeds a first discharge over-current threshold corresponding to a sustained over-current limit, a delay circuit that applies an added delay to the assertion of the first discharge over-current indicator, and a short circuit detection circuit that asserts a second discharge over-current indicator, with no delay added, when the discharge current exceeds a second discharge over-current threshold corresponding to a cell-specific peak output current limit. The battery protection circuit includes a logic circuit configured to assert a discharge over-current control signal to disable the battery responsive to assertion of the first discharge over-current indicator or the second discharge over-current indicator.

Abstract: Systems, methods, and apparatus for use in biasing and driving high voltage semiconductor devices using only low voltage transistors are described. The apparatus and method are adapted to control multiple high voltage semiconductor devices to enable high voltage power control, such as power amplifiers, power management and conversion (e.g. DC/DC) and other applications wherein a first voltage is large compared to the maximum voltage handling of the low voltage control transistors. According to an aspect, timing control of edges of a control signal to the high voltage semiconductor devices is provided by a basic edge delay circuit that includes a transistor, a current source and a capacitor. An inverter can be selectively coupled, via a switch, to an input and/or an output of the basic edge delay circuit to allow for timing control of a rising edge or a falling edge of the control signal.

Abstract: The constant current circuit includes a constant current generation circuit, a start-up detection circuit configured to detect start-up of the constant current generation circuit, and a clamp circuit configured to output a start-up voltage to the constant current generation circuit. The start-up voltage output from the clamp circuit is a voltage close to gate voltages that are higher than gate voltages of transistors that form a current mirror circuit of the constant current generation circuit, in a state where the constant current generation circuit is operating.

Abstract: A power supply device includes battery circuit modules each having a battery, a first switching element S1 connected in parallel to the battery, and a second switching element S2 connected in series to the battery between the battery and the first switching element S1, the second switching element S2 being turned off when the first switching element S1 is turned on, a battery circuit module group in which the battery circuit modules are connected in series, and a control circuit for outputting, at intervals of a certain time, a gate signal for turning on and off the first switching element S1 and the second switching element S2 to the battery circuit modules.

Abstract: An integrated circuit (IC) for energy harvesting is provided. The IC includes a voltage converter for converting an input power into an output power and a power point tracker for determining a target voltage for regulating the input voltage of the voltage converter. The IC includes an interface circuit to exchange information between the controller of the IC and one or more additional IC's for energy harvesting. The controller of the IC is configured to enable switching to a normal operating state on condition that a trigger signal from the interface circuit changes from a first reference value to a second reference value. The controller is further configured for outputting a status signal to the interface circuit wherein the status signal indicates if the power point tracker is enabled or disabled.

Abstract: The disclosure relates to a circuit apparatus for controlling a switchable glazing unit. The circuit apparatus has a potential-isolated circuit part configured to generate a periodically alternating drive voltage which has a predetermined first period duration on the glazing unit. The disclosure provides a voltage source, to which the potential-isolated circuit part is connected via a transformer and which is configured to operate the transformer with an AC voltage which has a second period duration shorter than the first period duration, wherein the potential-isolated circuit part is configured to receive the transformed AC voltage from the transformer and, in repeatedly alternating switching phases, to respectively forward only positive half-cycles of the transformed AC voltage to an electrical capacitance of the glazing unit and to forward only negative half-cycles of the transformed AC voltage to an electrical capacitance of the glazing unit by means of a converter device.

Abstract: A switching circuit includes: a detection wiring configured to receive a potential changing depending on a current of a first switching element; a first circuit connected between the detection wiring and a first having a first time constant, and making the first wiring follow the potential of the detection wiring; a second circuit connected between the detection wiring and a second wiring, having a second time constant larger than the first time constant, and making the second wiring fellow the potential of the detection wiring; a potential maintaining circuit configured to maintain the second wiring at a potential higher than the potential of the first wiring while a current is not flow through the first switching element; and a control circuit configured to turn off the first switching element in a case where the potential of the first wiring exceeds the potential of the second wiring.

Abstract: A surge voltage reducing member includes: a magnetic body including a long-side portion and short-side portions continuously formed at both ends of the long-side portion in a longitudinal direction; and a plurality of conductive paths wound around the long-side portion. Each of the conductive paths is wound in parallel along the longitudinal direction of the long-side portion.

Abstract: A method of protecting a high-voltage network comprising the steps for maintaining first controlled switches closed and second controlled switches open; measuring voltage and current on high-voltage interfaces; communicating the direction of the current to the other end of a high-voltage line; for each node: identifying a fault; verifying that the current is lower than the current interruption capability of the high-voltage interface switch and opening this switch.

Abstract: The switching power supply device is provided with: a plurality of power supply circuits corresponding to phases of a multi-phase AC power supply; a switching circuit that is capable of switching a phase connected to a power supply circuit not corresponding to one discretionary phase of the multi-phase AC power supply between the one discretionary phase and a phase to which the power supply circuit corresponds; an inrush current prevention circuit for preventing inrush current that is provided on a negative-electrode-side power supply line of the multi-phase AC power supply and at a position further toward the multi-phase AC power supply than is a connection point to which each of the plurality of power supply circuits are connected; and a filter circuit that is provided between the multi-phase AC power supply and the inrush current prevention circuit and has all lines of the plurality of phases magnetically coupled thereto.

Abstract: Methods of controlling semiconductor device and semiconductor device are provided in which a semiconductor device can define a normally operational ambient temperature at a low level. The Microcontroller includes a logical block, a temperature sensor for measuring junction temperature, a power consumption circuit for consuming predetermined power, and a Controller for controlling the consumption of power by the power consumption circuit such that the temperature measured at the temperature sensor is not less than a predetermined operational lower limit temperature of the logical block 110.

Abstract: DC-DC voltage regulators for converting an input voltage into one or more output voltages and methods for operating such voltage regulators are described. The voltage regulator may have a high side switching device coupled between the input port and a first intermediate node. The voltage regulator may have an inductive element having one port coupled to the first intermediate node and may have a capacitive element having two ports, coupled between the first intermediate node and a second intermediate node, with its one port coupled to the first intermediate node. The voltage regulator may have a charging switching device coupled between the other port of the capacitive element and a predetermined voltage level, for charging the capacitive element when the high side switching device and the charging switching device are both in an ON state.