18results about "Resistors" patented technology

To provide a circuit element that can improve its characteristics.SOLUTION: According to an embodiment, a circuit element includes a first conductive member, a second conductive member, a first layer, and a dielectric film. The first layer is between the first conductive layer and the second conductive layer. The first layer includes a first structure and a plurality of second structures. The plurality of second structures are arranged side by side on a first plane intersecting a first direction from the first conductive member to the second conductive member. At least part of the first structure is between the plurality of second structures on the first plane. A second conductivity of the plurality of second structures is different from a first conductivity of the first structure. The first layer is electrically connected to the second conductive member. The dielectric film is between the first conductive member and the first layer.SELECTED DRAWING: Figure 1

The present invention realizes a printed circuit board and a power conversion device which are capable of preventing short circuit or insulation failure between fuse terminals after a fuse blowout due to overcurrent or the like at the time of an abnormality. A printed circuit board (10) comprises: a substrate (2) having a through-hole (3a); and a fuse (1) disposed on the substrate (2) so as to face the through-hole (3a) and attached by means of connection terminals (1b). The fuse (1) is provided so that a space (8) is formed at a distance from the substrate (2).

In a DC-DC converter, a layout is designed to enable utilization the conductive trace connecting the converter output node to an output bump at which the load is attached as a sense resistor. The layout forces the output current down into lower metallization levels of an interconnect layer reaching the converter output node before the output current flows up into this conductive trace and out through the output bump. The conductive trace includes resistive pillars connected in parallel or series between the lower metallization levels and a top metallization layer of the conductive trace, with these resistive pillars being substantially greater in resistance than the lower metallization levels and the top metallization layer of the conductive trace.

To discharge a smoothing capacitor in a shorter time and maintain temperature of a resistance element at heat-resistant temperature or lower in a discharge circuit of a smoothing capacitor.SOLUTION: A discharge circuit (40) causes a smoothing capacitor for smoothing a DC voltage to discharge through a plurality of resistance elements (41) mounted on a substrate (50). The discharge circuit includes a series connection body in which at least three resistance elements (41 (11 to 15)) arranged at intervals in a first direction (X1) are connected in series by wires (47 (11 to 14)). A resistance value of the resistance element included in the series connection body becomes smaller as the resistance element is closer to a center in the first direction. The resistor elements adjacent to each other in the first direction included in the series-connection body are located at different positions in a second direction (X2) perpendicular to the first direction.SELECTED DRAWING: Figure 4

The utility model relates to the technical field of resistors, in particular to a high-power small-structure resistor structure. The resistor comprises a square ceramic shell, a resistor module arranged in the square ceramic shell, and a quartz sand mixed filler which is filled in the square ceramic shell and covers the resistor module, the resistor module comprises a fuse block arranged in the middle and a plurality of resistor blocks which are respectively arranged on the periphery of the fuse block and are arranged by taking the fuse block as the center, and the resistor blocks are sequentially arranged clockwise by taking the fuse block as the center and are connected in series. The beneficial effects of the utility model are that according to the technical scheme, the resistors are annularly arranged by taking the fuse block as the center, and then the resistors are sequentially connected in series through a special connection mode, so that an integral strip-shaped structure is formed, the structure is minimized, the space utilization is maximized, high power is provided for cooperative use, and the impact resistance of the product in a circuit is improved.

The present invention provides a copper alloy material that suppresses fluctuations in the temperature coefficient of resistance (TCR) and exhibits good solder wettability and molten alloy flowability, a resistor containing the copper alloy material, and a resistor equipped with the resistor. [Solution] A copper alloy material for resistance, comprising Mn: 10.0% by mass or more and 14.0% by mass or less, Ni: 1.0% by mass or more and 4.0% by mass or less, and Al: 0.3% by mass or more and less than 1.0% by mass, with the remainder being Cu and unavoidable impurities.

A refrigeration device (90) is provided with housings (105, 205), a refrigerant circuit (60), power supply units (45, 46), ground wires (51, 95), and ground resistors (55, 94). The refrigerant circuit (60) circulates a refrigerant (65) capable of generating a disproportionation reaction. Power supply units (45, 46) receive power from a commercial power supply (47). Ground wires (51, 95) conduct the housings (105, 205) and an external ground (G). The ground resistors (55, 94) are electrically connected to the ground wires (51, 95), and have a resistance value of 0.1 Omega or more.

A printed circuit board and a power conversion device are provided to prevent a short circuit or insulation fault between the fuse terminals after a fuse blows due to an overcurrent or the like, in the event of an abnormality. The printed circuit board (10) comprises a substrate (2) with a through-hole (3a) and a fuse (1) positioned opposite the through-hole (3a) and connected to the substrate (2) via a connection terminal (1b), the fuse (1) being positioned at an interval from the substrate (2) such that a space (8) is formed.

A current sensor includes a sense resistor connected between first and second terminals and an amplification-circuit. The amplification-circuit has an amplifier with inputs coupled to the first and second terminals and an output that produces a voltage representative of the input. A first resistor and second resistor are electrically connected to one of the amplifier inputs. The gain of the amplification-circuit is determined by the resistance of the second resistor and the ratio of the sense resistor resistance to the first resistor resistance. The first resistor and sense resistor are in a ratiometric relationship so they experience equal temperature changes during operation and vary equally in resistance with temperature. The sense resistor includes resistive pillars spaced along a conductive path between the first and second terminals, conductive stacks spaced along the same path, and an unbroken metal sheet contacting the resistive pillars. The pillars have greater resistance than the stacks.

The invention relates to a neutral point grounding resistor cabinet and a control method thereof, the neutral point grounding resistor cabinet is adopted, and at least part of resistors are connected with contactors in parallel. When the operation panel controls the contactor to be in a closed state, the closed contactor can be in short circuit with the resistor corresponding to the closed contactor, so that the resistor cannot be connected into a grounding loop in the resistor unit, and the resistance and the current in the grounding loop are changed. By means of the design, in the neutral point grounding process of a power utilization system or a power grid system, by obtaining the voltage value of one side of the transformer, the voltage grade of the power utilization system or the power grid system is judged, by controlling opening or closing of the contactor, the resistor connected into the grounding loop is changed, and the corresponding resistance value is matched in a self-adaptive mode, so that one cabinet has multiple purposes. The utilization rate and adaptability of equipment are remarkably improved, the comprehensive cost is reduced, and the problems of long construction power failure time, large operation and maintenance workload, serious resource waste and the like are effectively solved.

To properly press a thermistor against a power storage cell even when the position of the thermistor varies in the direction in which a branch portion extends.SOLUTION: A power storage pack includes a plurality of storage cells 11, a frame 30 arranged on the plurality of storage cells 11, a flexible printed circuit board 40 arranged on the frame 30, and a cover that covers at least a portion of the flexible printed circuit board 40. The frame 30 has an opening 32 at a location corresponding to a predetermined position above a predetermined storage cell 11. The flexible printed circuit board 40 has branch portions 47 that branch off from a main body 41 and extend toward the opening 32, and a thermistor 51 arranged at the tip of the branch portion 47. The cover includes a pressing member that presses the thermistor 51 against the top of the predetermined storage cell 11. The longitudinal direction of the thermistor 51 coincides with the direction in which the branch portions 47 extend.SELECTED DRAWING: Figure 9

This invention relates to the field of resistor and inductor technology, specifically disclosing a waveform modulation device integrating resistor and inductor and its installation method, comprising: an inductor body, the inductor body including an inductor head end and an inductor tail end, the inductor head end having a resistor cavity and the inductor tail end having an inductor slot; an inductor wire, the inductor wire being wound around the surface of the inductor tail end to form an inductor coil; a resistor, the resistor being placed inside the resistor cavity, the inductor head end having a resistor cap; and a resilient contact, the resilient contact being assembled inside the inductor slot, the inductor tail end having a contact cap, the resilient contact being disposed through the contact cap, and the resistor cap, resistor, inductor wire, contact cap, and resilient contact being sequentially electrically connected. This invention utilizes the internal coaxial ventilation design of the inductor body made of insulation, integrating the resistor and inductor into a single design, making the space between the two more fixed and compact, thereby reducing stray inductance in this part of the structure.

The device for detecting an addressing current in a bus shunt configuration of a participant in a communication bus system during an address allocation phase allows the selection of the participant to be addressed according to one of two different bus shunt configurations as well as one of two addressing current supply variants. The two bus shunt configurations differ in that in one case the participant is only connected via an internal bus shunt (R int ), while in the second case it has a parallel connection from the internal bus shunt (R int ) and an external bus shunt (R ext ). When selecting the addressing current supply, a distinction is made between the supply to the bus connection (28) facing the respective bus master (16) or to the bus connection (24) facing away from the bus master (16).

The invention provides a printed circuit board and a power conversion device, which can prevent short circuit or poor insulation between fuse terminals after fuse fusing caused by overcurrent and the like in an abnormal state. A printed circuit board (10) is provided with: a substrate (2) having a through-hole (3a); and a fuse (1) disposed to face the through-hole (3a) and mounted to the substrate (2) via a connection terminal (1b), the fuse (1) being provided so as to be spaced apart from the substrate (2) to form a space (8).

The invention relates to a current measuring assembly (1) for measuring an electric current (I), comprising a low-ohmic current measuring resistor (2) having two connection parts (3, 4), which are made of a conductor material, for introducing or discharging the current (I) and a resistor element (5), which is made of a resistor material, between the connection parts and comprising a printed circuit board (8), which is electrically and mechanically connected to the current measuring resistor (2) and has voltage taps (9-12) in order to measure the voltage at the connection parts (3, 4), measuring lines branching off from the voltage taps (9-12). According to the invention, at least one of the measuring lines has an interruption (21-24), which electrically separates two contact points (13-16, 17-20) from each other, and a freely positionable jumper (26-29), which is made of a conductor material, electrically bridges the interruption (21-24) and electrically connects the two contact points (13-16, 17-20) to each other. The invention further relates to a method for producing such a current measuring assembly (1) and to an adjustment system for same.

The utility model discloses a novel stannous sulfide force sensitive resistor which can output a larger electric signal under smaller stress and has excellent sensitivity. The method can be applied to the fields of pressure gauges, wearable devices and the like. The resistor is composed of a force sensitive element and a packaging material. The force sensitive element comprises a stannous sulfide film and a copper wire. The packaging material comprises polyimide and polydimethylsiloxane. The stannous sulfide thin film is packaged by polyimide at the bottom and polydimethylsiloxane on the upper surface. And four copper wires are equidistantly arranged side by side at the joint of the upper surface of the stannous sulfide thin film and the polydimethylsiloxane. The copper wire is connected with the stannous sulfide film through silver paste or soldering tin, and the other end of the copper wire extends outwards to output electric signals. The prepared stannous sulfide force-sensitive resistor is low in cost and convenient and fast to prepare, has a huge piezoresistive effect when being used under a simply supported beam structure, and is higher in sensitivity compared with a traditional silicon-based force-sensitive resistor.

The invention relates to a vertical metal sensing method for a DC-DC converter. In a DC-DC converter, a layout is designed to enable a converter output node to be connected to an output bump at which a load is attached as a sense resistor using conductive traces. The layout forces the output current to flow down into the lower metallization stage of the interconnect layer to reach the converter output node before the output current flows up into the conductive trace and out through the output bump. The conductive trace includes resistive posts connected in parallel or in series between a lower metallization stage and a top metallization layer of the conductive trace, the resistive posts having a resistance substantially greater than the resistance of the lower metallization stage and the top metallization layer of the conductive trace.

The invention relates to a current measuring arrangement (1) for measuring an electrical current (I), comprising a low-ohmic current measuring resistor (2) with two connection parts (3, 4) made of a conductor material for introducing or discharging the current (I) and a resistance element (5) made of a resistance material arranged therebetween, as well as with a printed circuit board (8) which is electrically and mechanically connected to the current measuring resistor (2) and has voltage taps (9-12) in order to measure the voltage at the connection parts (3, 4), measuring lines leading from the voltage taps (9-12). The invention provides that at least one of the measuring lines has an interruption (21-24) which electrically separates two contact points (13-16, 17-20) from one another, wherein a freely positionable jumper (26-29) made of a conductor material electrically bridges the interruption (21-24) and electrically connects the two contact points (13-16, 17-20) to one another.Furthermore, the invention comprises a manufacturing method for such a current measuring arrangement (1) and a balancing system therefor.