314 results about "Fuse (electrical)" patented technology

In fuse program circuits, fuse element FS is implemented using metal interconnect at third or higher layer of multilayer metal interconnect. In each fuse program circuit, program information and fuse select information are sequentially transferred using a scan flip-flops, and fuses are selectively and electrically blown one by one. The fuse program circuit provided with fuse elements that can be programmed even after packaging is implemented with low power consumption and a low occupation area.

A chip repair system designed for automated test equipment independent application on many unique very dense ASIC devices in a high turnover environment is disclosed. During test, the system will control on chip built-in self-test (BIST) engines collect and compress repair data, program fuses and finally decompress and reload the repair data for post fuse testing. In end use application this system decompresses and loads the repair data at power-up or at the request of the system.

A surge-suppression system utilizing a hybrid design comprised of metal oxide varistors, silicon avalanche diodes, a fuse element, filter capacitor and multiple surge planes and surge paths to dissipate and divert transient over-voltages away from sensitive electronic equipment. These multiple surge conduction paths provide redundant parallel planes which optimize the skin-effect phenomena, which is the flow of electrical current at the conductor surface. This design provides a very low impedance which produces a high performance surge-suppression system.

The invention provides an intelligent management system for domestic electrical load. The intelligent management system comprises a subscriber terminal, a cloud platform server and an intelligent electric appliance group. Through the subscriber terminal, the maximum current load value and a range of the intelligent electric appliances which are controlled are set and whether to delegate autocontrol to the cloud platform server is determined. The cloud platform server calculates a total current value of the intelligent electric appliance group and prompts users or automatically turns off the intelligent electrical appliances when the total current value reaches the maximum current load value. The invention further provides an intelligent management method for the domestic electrical load; by the intelligent management method, the intelligent electric appliances can be turned off automatically or the users can be prompted when the total current value is overload. A protection of an intelligent current fuse is formed, by interaction among the subscriber terminal application, the cloud platform server and the intelligent electric appliances, in the intelligent electric appliance group to automatically sort and turn off the intelligent electric appliances by priority when the total current value is close to the maximum current load value. Thus the total current value of the intelligent electric appliance group is sure to stay in a safe range, and safety of the domestic electricity is guaranteed.

An electrically programmable fuse (eFuse) includes (1) a semiconducting layer above an insulating oxide layer of a substrate; (2) a diode formed in the semiconducting layer; and (3) a silicide layer formed on the diode. The diode comprises an N+,p-,P+ or P+,n-,N+ structure.

A pyrotechnic switching device comprising a first and a second pyrotechnic initiators, and a body in which are present: an electrically conductive portion, and a mobile switching element having an insulating relief facing the conductive portion. The device also comprises a fuse element connected in series with the conductive portion, the first initiator being connected to the terminals of the fuse element so that tripping the fuse element actuates the first initiator, each initiator being configured to cause the device to switch from a current conducting configuration to a current interrupting configuration, the mobile switching element being set in motion toward the conductive portion in order to break it by the impact of the relief during switching from the first to the second configuration.

A lithium battery cell with an internal fuse component and including needed tabs which allow for conductance from the internal portion thereof externally to power a subject device is provided. Disclosed herein are tabs that exhibit sufficient safety levels in combination with the internal fuse characteristics noted above while simultaneously displaying pull strength to remain in place during utilization as well as complete coverage with the thin film metallized current collectors for such an electrical conductivity result. Such tabs are further provided with effective welds for the necessary contacts and at levels that exhibit surprising levels of amperage and temperature resistance to achieve the basic internal fuse result with the aforementioned sufficient conductance to an external device. With such a tab lead component and welded structure, a further improvement within the lithium battery art is provided the industry.

The invention discloses a device (11) for the protection of an electrical installation (Ph,N) against voltage surges, comprising at least one piezoresistor (15) and a cutter (12) for cutting the piezoresistor when the short-circuit occurs on the piezoresistor (15). A pole (151) of the piezoresistor (15) is connected with the electrical installation by at least two branches which are mutually connected in parallel and used for distributing the current. The cutter comprises a device (13) which is sensitive to the current traversing one of the branches to disconnect the pole in case of failure of the piezoresistor due to short-circuit. The device may be one or many circuit breakers or fuses. The device has insensitivity to over-intensities of the current up to a certain level. Stronger insensitivity of the cutter on the transient current is ensured by acting on the branch to act on the current part flowing through the piezoresistor.

The invention provides a power supply expansion structure with a socket and a plug. The power supply expansion structure with the socket and the plug mainly comprises a circuit board, a plug unit, a socket unit, a fuse unit and a protection unit. The plug unit and the socket unit are arranged on two opposite faces of the circuit board, and the fire wire terminal, the neutral line terminal and the earth terminal of the plug unit and the fire wire jack assembly, the neutral line jack assembly and the earth jack assembly of the socket unit are correspondingly arranged and electrically connected. The protection unit is arranged on the socket unit in a covered mode and provided with a movable blocking door used for shielding the socket unit. In addition, the invention further provides a power supply expansion device with the power supply expansion structure. The power supply expansion structure can accord with socket / plug specifications and safety standards of British standards, is combined with the circuit board to provide circuit configuration with an extended function at the same time, and simplifies electric conduction or circuit configuration of internal electrical connection.

The invention provides a full-electronic contact fuse tester and a testing method. The full-electronic contact fuse tester comprises an AC-DC power supply, a relay, a voltage converter, a ferroelectric memory, a crystal oscillator, a return circuit, a driving circuit, a single-chip, an indicating lamp, a CPLD and a connector; the single-chip is electrically connected with the voltage converter, the relay, the indicating lamp and the CPLD; the AD-DC power supply is electrically connected with the voltage converter and the relay; the CPLD is electrically connected with the driving circuit, the single-chip and the connector; and the connector is electrically connected with the relay. The full-electronic contact fuse tester can send out at most eight ways of trigger signals, so that a triggersignal processing module of contact fuses is detected; and needed trigger state signals are provided to the contact fuses with multiple sensors, so that the contact fuses can be tested more comprehensively.

The invention discloses a structural metal fuse material additive device. The structural metal fuse material additive device comprises fuse feeding systems, robots, a work platform, welding guns, molding parts, a numerical control milling system, a control system and a welder main engine. The robots are symmetrically distributed on the two sides of the work platform, and each robot is separately fixed to an I-steel truss; each fuse feeding system and the corresponding welding gun are separately fixed to a robot shaft, wherein the fuse feeding systems can feed fuses in a single-fuse or multi-fuse mode; the welder main engine is electrically connected with the welding guns and used for controlling the voltage, the current and the fuse feeding speed in the material additive process of the metal fuses; the control system is electrically connected with the robots, the welder main engine, the numerical control milling system and the fuse feeding systems, and used for controlling the robots, welder main engine, the numerical control milling system and the fuse feeding system to be turned on or off and controlling the process. By means of the structural metal fuse material additive device, the quick fused deposition of larger structural metal is guaranteed, and meanwhile, the requirements that the material additive manufacturing of tiny structures can be achieved, the size precision of the molding parts can be controlled, and the surface smoothness is high are met.

An adapter enables an automated tester to make electrical contact with a plurality of terminal posts of a terminal strip of an aircraft's electrical power system simultaneously, and includes a housing, a plurality of spring-loaded contactors protruding through a floor of the housing, and a printed circuit board disposed within the housing. Conductive leads respectively couple inner ends of the contactors to conductive traces of the printed circuit board. A wiring harness having a connector at one end is coupled to the circuit board such that each of its wires is coupled to a respective contactor via a circuit trace. Fuses are mounted on the circuit board and electrically coupled between the contactors and the harness wires. The adapter detachably couples to the terminal strip such that an outer end of each of the contactors is held in biased contact with a corresponding one of the terminal posts.

The invention relates to a chip peripheral anti-fuse pre-trimming circuit and a trimming method thereof. The trimming method comprises the following steps: calculating a rough pre-trimming value by using a formula according to an electrical parameter initial value and an electrical parameter target value which are tested before melting, and converting to obtain a rough pre-trimmed anti-fuse combination; according to the rough pre-trimming anti-fuse combination, carrying out the rough virtual fusion burning on the anti-fuse, and testing a rough electrical parameter value; calculating a pre-trimming value deviation by using the designed trimming step length of the electrical parameter, the rough electrical parameter value and the electrical parameter target value; determining an accurate pre-trimming range according to the pre-trimming value deviation, performing virtual fusion burning on the anti-fuse according to each anti-fuse trimming combination in the accurate pre-trimming range, testing a corresponding electrical parameter pre-trimming value, and obtaining an accurate anti-fuse combination when the tested electrical parameter value is closest to a target value under a certain anti-fuse combination; carrying out fusion burning on the antifuse according to the precise antifuse combination, and testing and verifying whether an error between the final value and the target value of the electrical parameter meets the requirement or not.

Electrically programmable fuses and methods for forming the same are shown that include forming a wire between a first pad and a second pad on a substrate, forming a blocking structure around a portion of the wire, and depositing a metal layer on the wire and first and second pads to form a metal compound, wherein the metal compound fully penetrates the portion of the wire within the blocking structure.

A method and circuit for determining and extinguishing electrical faults includes a power supply, and electrical load, a controller module, and electrical sensors, and when the controller module does not extinguish the electrical fault, another switch blows a fuse.

Integrated circuit devices are provided including an integrated circuit substrate and first through fourth spaced apart lower interconnects on the integrated circuit substrate. The third and fourth spaced apart lower interconnects are parallel to the first and second lower interconnects. A first fuse is provided on the first and second lower interconnects between the first and second lower interconnects and is electrically coupled to the first and second lower interconnects. A second fuse is provided spaced apart from the first fuse and on the third and fourth lower interconnects. The second fuse is between the third and fourth lower interconnects and is electrically coupled to the third and fourth lower interconnects. Related methods of fabricating integrated circuit devices are also provided.

Electrically programmable fuses and methods for forming the same are shown that include forming a wire between a first pad and a second pad on a substrate, forming a blocking structure around a portion of the wire, and depositing a metal layer on the wire and first and second pads to form a metal compound, wherein the metal compound fully penetrates the portion of the wire within the blocking structure.

An improved fuse including a fuse body formed of an electrically insulative material. The fuse body defines a cavity which extends from a first end of the fuse body to a second end of the fuse body. A fusible element is disposed within the cavity and extends from a first end face of the first end of the fuse body to a second end face of the second end of the fuse body. Insulated plugs are disposed within the cavity at the first and second ends of the fuse body wherein the plugs adhere to an interior surface of the fuse body and form seals that close the internal cavity. The fuse may further include end terminations that are applied to the ends of the fuse body in electrical contact with the fusible element.

The present invention provides a protection device which includes: a PTC laminar element which is formed of an insulation resin and has at least one throughhole; electrically conductive metal thin layers which are positioned on each of main surfaces of the laminar element, and a fuse layer which is positioned on a side surface defining at least one of said at least one throughhole and electrically connects the electrically conductive metal thin layers which are positioned on each of main surfaces of the laminar element. The protection device of the present invention allows a larger amount of a current to flow therethrough and can provide a protection from an excessive current.

The invention relates to the technical field of a fuse, and provides a thermal fuse and an anti-thunder element. The thermal fuse comprises a shell, a first electrode part and a second electrode part;the first electrode part and the second electrode part are inserted into the shell from the same end part of the shell at intervals; the first electrode part is elastic, and the first electrode partis pressed to be bent towards the second electrode part to prop against the second electrode part, and the propping position of the two electrode parts is welded and connected through alloy solderingtin; an accommodating space is formed in the shell; the first electrode springs back to the initial position after the alloy soldering tin is molten to form a fracture surface distance L from the second electrode part; the propping position of the first electrode parts and the second electrode parts is only welded by a little alloy soldering tin, so that a phenomenon of molten tin liquid splashingdoes not occur easily; the first electrode part is elastic and can spring back quickly in a direction deviated from the second electrode part after the soldering tin is molten, so that the break timeof the two parts is greatly shortened, thereby reducing arcing energy; and the fracture surface distance L can be preset so as to ensure the electrical insulation intensity of the fracture surface.

Junction diodes fabricated in standard CMOS logic processes can be used as program selectors for One-Time Programmable (OTP) devices, such as electrical fuses. At least one portion of the electrical fuse can have at least one extended area to accelerate programming. The program selector can be a diode or MOS that can be turned on through the channel or the source / drain junction. The OTP device can have the at least one OTP element coupled to at least one diode in a memory cell. A method of programming electrical fuses reliably is also disclosed. Advantageously, by controlled programming where programming current is maintained below a critical current, programming is reliable. In another embodiment, a programmable resistive device cell can use at least one MOS device as selector which can be programmed or read by turning on a source junction diode of the MOS or a channel of the MOS.

The invention provides a fuse programming circuit and a fuse programming method. The circuit includes an electrical fuse and a sensing and control circuit. The electrical fuse is coupled between a MOS transistor and a current source node. The sensing and control circuit is coupled to a gate of an MOS transistor and is configured to receive a programming pulse and output a modified programming signal to the gate of the MOS transistor for programming the fuse. The pulse width of the modified programming pulse is decided by a fuse current flowing through the electrical fuse. The invention benefits reduction of a heat stress on the electrical fuse so as to enable the fused electrical fuse to have a higher resistance and broader sensing range in the variation of pressure, volume and temperature.

An inspection apparatus of an electric junction box is provided, by which improper mounting of electric parts can be detected. The inspection apparatus 1 has a CCD camera 5, an image-processing device 7 and a control device 8. The CCD camera picks up images of fuse 14 in the electric junction box 12 as a subject of the inspection. The image-processing device 7 stores an image consulting data 60. The image consulting data 60 includes a plurality of images of each fuse 14 having the same item symbol with regard to every item symbol, the fuses 14 being used in the electric junction box 12. The control device 8 stores normal data indicating the proper item symbol of the fuse 14 to be mounted on a corresponding mount 13. The image-processing device 7 extracts the image most analogous to the image picked up by the CCD camera 5 from the images in the image consulting data. The control device 8 judge the quality of the item symbol of the fuse 14 having the most analogous image on the basis of the normal data.

A ball ratchet mechanism suitable for use with an electrical disconnect employs a track and drive surface that engage the ball so as to capture it without significant shear force being applied to ridges of the track. In this way, the shape of the track can be optimized for smooth ratcheting action without the risk of high torques shearing track ridges.

An electrically programmable fuse device includes an anode, a cathode, a fuse link connecting the anode and the cathode, a compressive stress layer on the anode, and a tensile stress layer on the cathode. Because of the compressive stress layer on the anode and a tensile stress layer on the cathode, the programming speed of the electrically programmable fuse device is shorter in relation to conventional electrically programmable fuse devices.

The invention relates to a protection device having functions of automatic control, energy moving and degradation self-separation for a vacuum arc extinguish chamber. The protection device comprises an automatic degradation off-line device TQ and an energy-moving component R1 which are arranged in series; the two ends of the energy-moving component R1 are connected with a resistor-capacitor (R-C) loop in parallel; a resistor R and a capacitor C in the R-C loop are connected in series; the automatic degradation off-line device TQ comprises a shell; a fuse is arranged in the shell; quartz sand is filled in the shell; a cavity is formed in the middle of the upper part of the shell; a post-degradation off-line indicator and a pre-compaction spring are arranged in the cavity and sealed in the cavity; the lower end of the fuse is connected with a second electrode; the upper end of the fuse passes through the pre-compaction spring and then is connected with the post-degradation off-line indicator; the upper part of the shell is provided with a first electrode; and a lead line of the first electrode is buried in the quartz sand. By the protection device, the reignition rate of a vacuum breaker can be reduced, and the reignition overvoltage, the shut-off overvoltage and the overvoltage during simultaneous cut-off of three phases can be reduced, so that the arc extinguish chamber of the vacuum breaker can be protected, and other electrical equipment can be also protected.

The invention relates to the technical field of integrated circuit design, and discloses an E-fuse programming and reading circuit which comprises a NOR gate, a first switch control tube, a second switch control tube, a current mirror image tube and a latch, two input ends of the NOR gate are electrically connected with a first control signal end and a second control signal end respectively; the second switch control tube is electrically connected with a read-write control signal end; and the current mirror image tube is electrically connected with the current control end and is used for controlling the magnitude of the current flowing through the E-fuse. By means of the current type programming mode, programming PAD of the E-fuse is not added, the E-fuse is directly programmed through anon-chip circuit, the layout area is reduced, and programming reliability is improved. Through programming control and reading enable control, the LATCH is adopted to latch the information stored in the E-fuse, so that the static power consumption is reduced. And a current mirror image tube is adopted to adjust the magnitude of image current, so that data reading errors caused by process deviationand inconsistency of E-fuse resistors after programming are prevented.