304 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 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 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.

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.

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 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.

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 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 provides a circuit overload protection method, which is applied to an electrical system and comprises the steps of S1, detecting a current value in an electrical system circuit; S2, performing sampling on a current value detection result in a preset time interval before the current moment for a preset number of times, wherein the time interval between two adjacent times of sampling is the same, calculating an effective current value in the preset time interval according to the sampling frequency and the current value obtained by each sampling, then comparing the effective currentvalue with a preset maximum allowable overload current value, and when the effective current value is greater than the preset maximum allowable overload current value, judging that the current in thecircuit at the current moment is overload current; and S3, when the current in the circuit at the current moment is the overload current, cutting off a power supply of the electrical system. The invention further provides an overcurrent protection device. After the technical scheme is adopted, the overcurrent protection device is not influenced by the environment temperature, the overload currentcan be judged, and the fuse does not need to be replaced.

The invention relates to the technical field of circuit protection, and discloses a household power strip circuit protection device based on an energy-saving and environment-friendly concept, and thedevice comprises a power strip body, wherein a button is fixedly connected to the exterior of the power strip body, an indication lamp is fixedly connected to the exterior of the power strip body, anda rotating wheel is movably connected to the interior of the power strip body; a moving block is movably connected outside the rotating wheel, a first connecting rod is movably connected inside the power strip body, and a second connecting rod is movably connected outside the first connecting rod. Under the interaction of a rotating wheel, a moving block, a first connecting rod, a second connecting rod, an adapter block, a sliding block, a sliding rail, a connector, a fuse link, a fuse wire, a circular electromagnet, an insulating support, a copper ring, an iron swing rod, a stop block and aswitch assembly, when a user uses the power strip, a power supply of electrical equipment can be timely turned off under the action of the fuse link when the circuit of the power strip is overloaded,so the power strip and the electrical equipment are protected, and the reliability of household power utilization is also improved.

A semiconductor integrated circuit comprises a plurality of fuses arranged to be spaced apart from one another by predetermined intervals, and a page buffer electrically connected to the plurality of fuses and configured to determine whether to disconnect the fuses. The fuses comprise a NAND flash string. The NAND flash string comprises a drain select transistor connected to a bit line, a flash memory cell electrically connected to the drain select transistor, and a source select transistor connected between the flash memory cell and a ground terminal.