Abstract:
A semiconductor device includes: a transistor region including an IGBT having a gate electrode and an emitter electrode; a termination region placed around the transistor region; and an extraction region placed between the transistor and the termination region and extracting redundant carriers. A P-type layer is placed on an N-type drift layer in the extraction region. The P-type layer is connected to the emitter electrode. A dummy gate electrode is placed via an insulation film on the P-type layer. The dummy gate electrode is connected to the gate electrode. Life time of carriers in the termination region is shorter than life time of carriers in the transistor region and the extraction region.
Abstract:
The present invention discloses an underwater building unit and its installation and application methods. It includes a caisson with both ends open and is composed of two rows of box boards being not intersected with each other. Each row of box boards consists of a set of stake-plate body combinations and the bind members between every two adjacent stake-plate body combinations. A positioning beam is located on the top of the box boards and connects the two box boards. There is a cross rib at the middle part of the outer surface of each bind member. The open caisson is made up of small components of low weight. So it is easy for installation and could be extended unlimitedly as required. In addition, the underwater building unit has low underwater condition requirement and is relatively stable, thus the underwater building is quite firm and has a long life. Each component of the open caisson can be industrially manufactured on land so as to lower the cost and free of the influence of stormy waves.
Abstract:
The present disclosure relates to a power supply grounding fault protection circuit. A power supply grounding fault protection circuit may include a power supply circuit, a leakage grounding detection circuit, a signal amplifying and shaping circuit, a microcontroller control circuit, a power supply detection and indicator circuit, a tripping mechanism control circuit, a reverse grounding detection and execution circuit, a wireless network circuit, and an automatic resetting circuit. The practice of the present disclosure may permit a user to reset the grounding fault circuit interrupter remotely after a leaking fault of a circuit is eliminated.
Abstract:
The present disclosure relates to a reverse grounding protection circuit and a ground fault circuit interrupter. The reverse grounding protection circuit may include a power supply circuit, a leakage signal amplifying circuit, a leakage grounding detection circuit, a power supply indicator circuit, a manual detection circuit, a tripping mechanism control circuit, a reverse connection detection and execution circuit, and a power-on driving signal generating circuit. A ground fault circuit interrupter may comprise an interrupter body and a reverse grounding protection circuit in the interrupter body. The practice of the present disclosure may avoid the risk from reverse connection of the ground fault circuit interrupter and output of power of reverse connection, and thus improve safety of the ground fault circuit interrupter.
Abstract:
In one example, a hybrid circuit interrupter may include a three-coil architecture, first coil circuitry, leakage detection circuitry, and a main processing circuit including a processor. The three-coil architecture may include a coil housing, three coils, and a plurality of coil assembly conductors. The coils may be disposed within the coil housing. The coils may be parallel and aligned. The coil assembly conductors may be at least partially disposed within the coil housing. The first coil circuitry may be connected to the first coil and may generate first coil signals. The leakage detection circuitry may be connected to the other coils and may generate a leakage signal. The processor may receive the first coil and leakage signals, determine whether an arc fault exists from the first coil signals, determine whether a ground fault exists from the leakage signal, and generate a first trigger signal if a fault is determined.
Abstract:
Smart power socket comprising an MCU, a power supply circuit connected to the MCU, a wireless module circuit, and a drive switch control circuit, where the power supply circuit is connected to a low voltage power line, the wireless module circuit is connected to an external control device by means of wireless communication, and the drive switch control circuit is controlled by the MCU to implement controlling of on and off states of the smart power socket. Further, a smart home system comprising a remote control terminal and the smart power socket, where the smart power socket constitutes a LAN and is connected to Internet by means of a smart home gateway, and the remote control terminal is connected to the smart power socket by means of Internet to implement remote controlling of a household appliance plugged into the smart power socket.
Abstract:
The termination region includes a ring region (LNFLR). A plurality of ring-shaped P-type ring layers (12a˜120 are regularly arranged in the ring region (LNFLR). The ring region (LNFLR) is divided into a plurality of units which include the plurality of P-type ring layers (12a˜120 respectively. A width of each unit is constant. A total number of P-type impurities in the ring region (LNFLR) is N, the target withstand voltage is BV [V], a width of each unit is SandL [μm], and the number of the plurality of units is num, following relationships are satisfied. N≧(M×BV)γ, M=104 to 105, γ=0.55 to 1.95, SandL×num×Ecri≧2×α×BV, Ecri=2.0 to 3.0×105 [V/cm], α=100 to 101. Widths of the P-type ring layers (12a˜12f) of the plurality of units linearly decrease toward an outside of the termination region.
Abstract:
A ground fault circuit interrupter comprises a reset key, a reset locking mechanism, a reset mechanism, a reset bracket, a bracket reset mechanism, a bracket homing mechanism, a reset linkage mechanism, and a reset linkage clutching mechanism. A conductive assembly is configured to selectively connect or disconnect electrical continuity between the power input side and the load side. The conductive assembly comprises pairs of short-circuit conductive strips with conductive movable contacts, power input connection assemblies with input conductive stationary contacts, wiring output assemblies, receptacle output assemblies with output stationary contacts, and a first short-circuit conductor and a second short-circuit conductor. A reverse wiring protection device comprises an electromagnetic generating device having a power supply sub-circuit and an electromagnetic actuator bracket configured to selectively close first normally open switch and second normally open switch and further configured to open first normally closed switch and second normally closed switch.
Abstract:
A semiconductor device includes: a transistor region including an IGBT having a gate electrode and an emitter electrode; a termination region placed around the transistor region; and an extraction region placed between the transistor and the termination region and extracting redundant carriers. A P-type layer is placed on an N-type drift layer in the extraction region. The P-type layer is connected to the emitter electrode. A dummy gate electrode is placed via an insulation film on the P-type layer. The dummy gate electrode is connected to the gate electrode. Life time of carriers in the termination region is shorter than life time of carriers in the transistor region and the extraction region.
Abstract:
A ground fault circuit interrupter comprises a reset key, a reset locking mechanism, a reset mechanism, a reset bracket, a bracket reset mechanism, a bracket homing mechanism, a reset linkage mechanism, and a reset linkage clutching mechanism. A conductive assembly is configured to selectively connect or disconnect electrical continuity between the power input side and the load side. The conductive assembly comprises pairs of short-circuit conductive strips with conductive movable contacts, power input connection assemblies with input conductive stationary contacts, wiring output assemblies, receptacle output assemblies with output stationary contacts, and a first short-circuit conductor and a second short-circuit conductor. A reverse wiring protection device comprises an electromagnetic generating device having a power supply sub-circuit and an electromagnetic actuator bracket configured to selectively close first normally open switch and second normally open switch and further configured to open first normally closed switch and second normally closed switch.