Abstract: A solenoid valve includes a solenoid coil, a poppet, and a drive circuit. A first semiconductor device of the drive circuit is controlled by a gate signal to control a coil current. A flyback circuit of the drive circuit includes a second semiconductor device in series with a diode. The second semiconductor device is controlled by a flyback control signal to: (i) enable the flyback circuit to maintain the coil current through the solenoid coil when the poppet transitions to a second position, and (ii) disable recirculation of the coil current through the solenoid coil when the poppet transitions to a first position. A controller is configured to transition the poppet to the second position using the gate signal, enable the flyback circuit using the flyback control signal, and reduce at least one of a duty cycle and a frequency of the gate signal when the flyback circuit is enabled.

Abstract: This device consists of a housing (1) made of electrically insulating material, in which a fuse (6) is provided with at least one main fuse wire (7) located in its cavity. The main fuse wire (7) is electrically conductively connected at one end to at least one connecting pin (2) which is led out of the housing (1) and at the other end it is electrically conductively connected to at least one terminal (3) located in at least one cavity (4) formed in the housing (1). The shape of the connecting pin (2) is adapted for connection to the protected device.

Abstract: The present disclosure relates to a risk early warning method and system for hydrogen leakage, and relates to the field of hydrogen leakage. The method includes: obtaining ventilation information of a hydrogen-related area; carrying out grid division on a pipeline system of the hydrogen-related area to obtain a gridded pipeline system; determining a risk coefficient corresponding to each grid of the gridded pipeline system according to leakage sources of the pipeline system; determining a high-risk region by means of a jet cone model according to the risk coefficients; determining a medium-risk region, a low-risk region and a safe region according to the risk coefficients and the ventilation information; and carrying out risk early warning according to the high-risk region, the medium-risk region, the low-risk region and the safe region.

Abstract: An electroadhesive clutch can be coupled to a textile. The clutch can include a first electrode assembly comprising a first conductive member, and a second electrode assembly comprising a second conductive member overlaying in part the first conductive member. In an example, the clutch includes or uses an elastic encasing within which the first and second electrode assemblies are positioned. The elastic encasing can form a first bond with the first conductive member at a first location of the elastic encasing and a second bond with the second conductive member proximate a second location of the elastic encasing different than the first location.

Abstract: A solid state circuit breaker that may include a metal oxide varistor (MOV) that is connected in series to a thyristor, the MOV to clamp voltage of current flowing through the solid state circuit breaker; the thyristor including a gate to control flow of the current to the MOV along a first path to the MOV; a breakover diode to activate at a target voltage level to allow the current to flow to the MOV along a second path; and a Zener diode to close the gate and allow current to flow along the first path in response to the current on the second path.

Abstract: A coil component includes a body including a first surface and a second surface opposing each other, and a first side surface and a second side surface opposing each other and connecting the first surface of the body to the second surface of the body; a support substrate embedded in the body and including a first surface and a second surface opposing each other; coil portion disposed on the support substrate; and a recognition pattern disposed on the first surface of the body, wherein the recognition pattern extends, from an edge region in which the first surface of the body is in contact with the first side surface of the body, toward an edge region in which the first surface of the body is in contact with the second side surface of the body.

Abstract: There is provided mechanisms for differential protection of a transmission line (20) of a transmission system (25). A method comprises obtaining a restraining current and a differential current from the transmission line (S102). The method comprises determining a compensation current for the differential current (S104). The method comprises providing the differential current as compensated for by the compensation current and the restraining current to a differential protection arrangement for making a trip decision (S106). The method comprises detecting an internal fault for the transmission system (S108). The method comprises, as a result thereof, providing the differential current without being compensated for by the compensation current and the restraining current to the differential protection arrangement for making the trip decision (S110).

Abstract: An electrostatic adsorption member includes a dielectric member having a first surface and a second surface opposite to the first surface and formed with a through-hole penetrating from the first surface to the second surface, and a porous body provided in the through-hole and having a third surface flush with the first surface. The through-hole has a first opening apart from the first surface by a first distance in a first direction perpendicular to the first surface, and a second opening apart from the first surface by a second distance larger than the first distance in the first direction. In a plan view from the first direction, at least a portion of the first opening is inside the second opening, and the porous body has a first portion located inside the first opening, and a second portion connected to the first portion and located outside the first opening.

Abstract: Provided is an electronic control device capable of suppressing failure of an electronic component due to static electricity. The electronic control device 100 includes a substrate 10, an electronic component 1 mounted on the substrate 10, an insulating case 20 that holds the substrate 10, a conductive cover 30 that covers the insulating case 20, a conductive base 40 that holds the insulating case 20, and a conductive fixture 21 that fixes the insulating case 20 to the conductive base 40. A distance L1 between the conductive cover 30 and the conductive fixture 21 is equal to or less than a distance L2 between the conductive cover 30 and a conductive terminal 1a of the electronic component 1.

Abstract: An embodiment of the present disclosure relates to an electronic circuit including a first switch coupling a first node of the circuit to an input/output terminal of the circuit; a second switch coupling the first node to a second node of application of a fixed potential; and a high-pass filter having an input coupled to the terminal and an output coupled to a control terminal of the second switch.

Abstract: An eFuse for use in high voltage applications is disclosed. In one embodiment, an apparatus includes a solid-state switch having source and drain terminals connected to switch a load current from a high voltage source through a high voltage load. The apparatus also includes a sense circuit that senses a voltage between the switch source and drain terminals and turns off the switch when the voltage exceeds a selected voltage level.

Abstract: An overcurrent protection circuit includes a current control part configured to control conductance of a transistor so as to limit an output current flowing when the transistor is turned on to a predetermined upper limit or less, and a duty control part configured to forcibly turning on/off the transistor at a predetermined duty ratio when a temperature protection circuit detects a temperature abnormality in a state where the current control part limits the output current.

Abstract: Series arcing in wiring is a potentially catastrophic situation that has proven to be difficult to detect reliably with existing methods. This invention allows for the quick and accurate detection of series arcing in an electrical circuit. The method works with AC or DC power sources, and at any voltage or current level. This method will also detect high resistance in a circuit, which is another indicator of a potentially hazardous fault condition. The method compares the voltage at each end of a conductor, and will declare a fault when this voltage exceeds the minimum voltage required to sustain arcing.

Abstract: A display module is disclosed. The display module includes: a display panel body; a backplate; a composite functional layer disposed on a back side of the backplate; and an electrostatic discharging part including an electrostatic conductive element and an electrostatic discharging element connected to the electrostatic conductive element. Wherein, the electrostatic conductive element is in contact with the display panel body and/or the backplate, and the electrostatic discharging element is in electrical contact with the metal layer of the composite functional layer. Therefore, fluctuations of driving voltages caused by static electricity can be eliminated.

Abstract: The present disclosure provides an electrostatic discharge protection circuit, a chip including a first pad and a second pad. The electrostatic discharge protection circuit includes a trigger unit and a discharge transistor. The trigger unit is connected between the first pad and the second pad, provided with a trigger terminal, and configured to generate a trigger signal when there is an electrostatic pulse on the first pad. The first pad is connected to a first voltage, the second pad is connected to a second voltage, and the first voltage is greater than the second voltage. The discharge transistor has a first terminal connected to the first pad, and a second terminal connected to the second pad, and discharges an electrostatic charge to the second pad when triggered by the trigger signal.

Abstract: An electrical circuit includes a contact with a pair of switchable electrodes, the contact configured to cycle through make and break transitions while conducting current. The electrical circuit further includes an arc suppressor, at least one sensor, and a controller circuit. The arc suppressor is coupled across the pair of switchable electrodes and is to extinguish an arc formed across the pair of switchable electrodes during the make and break transitions of the contact. The at least one sensor is coupled to the pair of switchable electrodes and is configured to generate sensor data. The controller circuit includes a plurality of registers and is configured to detect a fault condition associated with the contact based on the sensor data. The controller circuit further sequences contact opening of the contact based on the detected fault condition and a timing value stored in at least one register of the plurality of registers.

Abstract: A surge protective device (SPD) assembly module includes a polymeric outer enclosure, an SPD module, a first terminal, and a second terminal. The polymeric outer enclosure defines an enclosed, environmentally sealed enclosure chamber. The SPD module is disposed in the enclosure chamber. The SPD module defines an environmentally sealed SPD chamber and includes: first and second electrically conductive electrode members; and a varistor member formed of a varistor material and electrically connected between the first and second electrode members. The varistor member is disposed in the SPD chamber between the first and second electrode members. The first terminal is electrically connected to the first electrode member and extending out from the outer enclosure. The second terminal is electrically connected to the second electrode member and extending out from the outer enclosure.

Abstract: A circuit is protected from sudden potential fluctuations that occur in a power ground. An in-vehicle protection apparatus includes a first Zener diode portion, a second Zener diode portion, a diode portion, and an intermediate conductive path. A voltage based on a power source is applied to the anode side of the diode portion. The intermediate conductive path is provided with a branch portion at one end, and forms a path between the cathode of the diode portion and the branch portion. The cathode of the first Zener diode portion is electrically connected to the branch portion and the anode of the first Zener diode portion is electrically connected to a power ground line. The cathode of the second Zener diode portion is electrically connected to the branch portion and the anode of the second Zener diode portion is electrically connected to a signal ground line.

Abstract: A lightning protection apparatus disposed in a photovoltaic power generation system includes first lightning protection units in a one-to-one correspondence with phase lines at a to-be-protected location in the photovoltaic power generation system and a second lightning protection unit connected in series to the first lightning protection units. A first terminal of each first lightning protection unit is connected to a corresponding to-be-protected phase line, and a second terminal of each first lightning protection unit is connected to a first terminal of the second lightning protection unit. A second terminal of the second lightning protection unit is connected to an earth wire. The second lightning protection unit includes at least one gas discharge tube.

Abstract: An integrated electro-static discharge (ESD) device has a set of metal layers. Each metal layer in the set has one or more first-terminal metal features interleaved with one or more second-terminal metal features in a lateral direction, and at least one first-terminal metal feature in a metal layer of the set overlaps in a normal direction at least one second-terminal metal feature in an adjacent metal layer of the set. By overlapping metal features in the normal direction, capacitance can be added to the ESD device, which improves its operating characteristics, without increasing the layout size of the ESD device.