453results about "Resistor details" patented technology

The invention provides a carbon ceramic resistor and a preparation method thereof, and relates to the technical field of special material production of power systems and electrical equipment. The preparation method comprises the steps that carbon-containing electric conductor raw materials are mixed to obtain a first mixed raw material, and the carbon-containing electric conductor raw materials comprise, by mass, 15 parts of gluconic acid, 10 parts of aluminum oxide and 55 parts of deionized water; performing hydrothermal reaction on the first mixed raw material to obtain a carbon-containing conductor precursor; the carbon-containing conductor precursor is carbonized in a protective atmosphere, a carbon-containing conductor of a core-shell structure is obtained, and the carbon-containing conductor takes aluminum oxide as an inner core and takes a conductive carbon material formed by gluconic acid as a conductive outer shell; mixing the carbon-containing electric conductor with the core-shell structure with a carbon ceramic matrix raw material to obtain a resistor blank; and sintering the resistor blank to obtain the carbon ceramic resistor. The uniformity, the stability and the reliability of the carbon ceramic resistor are improved, so that the carbon ceramic resistor can better meet the application requirements of ultrahigh-voltage and extra-high-voltage alternating-current power transmission systems.

An air cooled resistor arrangement comprising a first elongated tube member forming a first air flow channel and a second elongated tube member forming a second air flow channel, wherein the first elongated tube member is at least partly housed inside the second elongated tube member. The air-cooled resistor arrangement further comprises an air dilution portion comprising at least one opening at which the first air flow channel is arranged in fluid communication with the second air flow channel.

A sintered body has a first end face and a second end face opposite to each other in a first direction and a first side face and a second side face opposite to each other in a second direction. A first end face electrode is disposed on the first end face except for end portions of the first end face in the second direction. A second end face electrode is disposed on the second end face except for end portions of the second end face in the second direction. A first side face electrode is disposed on the first side face except for end portions of the first side face in the first direction. A second side face electrode is disposed on the second side face except for end portions of the second side face in the first direction.

A frame terminal 8 is bent so that its cross-sectional shape is an S-shape, and such that separation distances L1, L2 and L3 in a horizontal direction between an uppermost portion and a lowermost portion, in the vertical direction, of an end portion side face 21a of a resistance element 8 built into a mold divider 1, and a part substantially midway between an uppermost point and a lowermost point thereof, and the parts of the surface of the frame terminal 6 that correspond to these parts in the horizontal direction satisfy the relation L1>L2≥L3. As a result, in the mold divider 1, a space which is to be filled with a joining material and which has a non-uniform separation distance is formed between the frame terminal 6 and the end portion side face 21a, thereby making it possible to ensure the bonding strength between the resistance element 8 and the frame terminal 6.

An energy dissipation system for a vehicle, the energy dissipation system comprising an air compressor comprising a compressor inlet configured to receive ambient air, an electric motor comprising a rotor having a rotor shaft operatively connected to a compressor shaft of the air compressor, power electronics arranged in a power electronics housing, the power electronics being electrically connected to the electric motor and configured to feed electric power to the electric motor, and an air flow channel through which the ambient air is configured to be fed to the compressor inlet, the air flow channel being formed by an inner elongated tube member and an outer elongated tube member, wherein the electric motor is housed within the inner elongated tube member and attached to a first inner surface, and wherein the power electronics housing is attached to a second outer surface.

The invention discloses an overvoltage protection combined lightning arrester of a power system. The overvoltage protection combined lightning arrester comprises an insulating cylinder, a lower fixing part, a lower electrode, a resistor body, an end cover, an upper fixing part and an upper electrode, the lower fixing part is fixed to the lower end of the insulating cylinder in a sealed mode, the lower electrode is connected to the upper end of the lower fixing part, the resistor body is connected to the upper end of the lower electrode, the end cover is sealed and installed at the upper end of the insulating cylinder through threads, the upper fixing part is fixed to the upper end of the end cover in a sealed mode, and the upper electrode is connected to the lower end of the upper fixing part; the device further comprises an inner sealing cylinder, an outer sealing cylinder, a heat conduction mechanism and a pneumatic mechanism. The inner sealing cylinder is arranged on the periphery of the resistor body, the upper end and the lower end of the inner sealing cylinder are in movable contact with the end cover and the inner wall of the insulating cylinder respectively, the outer sealing cylinder is in movable contact with the inner wall of the insulating cylinder, the heat conduction mechanism is arranged in the inner sealing cylinder, and the pneumatic mechanisms are circumferentially arranged and are arranged between the inner sealing cylinder and the outer sealing cylinder respectively.

The present invention relates to a resistor unit (1, 1', 1''), comprising: at least one electrical resistor (10), at least one fluid-carrying cooling unit (30) on and / or in which at least part of the at least one electrical resistor (10) is arranged, at least one detection unit (3, 4, 5, 6, 7, 71, 72) and at least one evaluation device (40) that can be operatively connected to the at least one detection unit (3, 4, 5, 6, 7, 71, 72), the at least one detection unit (3, 4, 5, 6, 7, 71, 72) being configured to measure a variable that represents the temperature (TR) of the at least one electrical resistor (10) per se or in combination with a further detection unit (3, 4, 5, 6, 7, 71, 72) and that relates to an electrical property of the at least one electrical resistor (10) and / or to a property of a fluid flowing through the fluid-carrying cooling unit (30). The present invention additionally relates to a brake system and to a vehicle having such a resistor unit and to a method for estimating a temperature of the fluid-cooled electrical resistor.

The utility model discloses an overvoltage protection assembly and system formed by voltage-sensitive nonlinear elements. The assembly comprises an insulating core tube, a plurality of nonlinear elements, a first electrode, a second electrode, an insulating cylinder, a cooling fan and a temperature sensor. The assembly can perform forced air cooling on the nonlinear element, and is timely in response, good in cooling effect, simple and compact in structure and easy to integrate.

The utility model relates to the technical field of brake electric boxes, in particular to a protective kit for a brake resistor box, which is arranged at the end of a resistor, the end of the resistor is provided with a mounting portion, one end of the mounting portion close to the resistor protrudes to form a limit portion, and the periphery of the mounting portion is provided with external threads. The protective sleeve comprises a fixing nut, a first anti-explosion fixing part and a second anti-explosion fixing part, the fixing nut is in threaded connection with the mounting part, a gap for mounting the support is formed between the fixing nut and the limiting part, the first anti-explosion fixing part is in threaded connection with the mounting part, the first anti-explosion fixing part wraps the mounting part, and the second anti-explosion fixing part wraps the mounting part. The fixing nut is located between the first anti-explosion fixing piece and the limiting part, the first anti-explosion fixing piece and the second anti-explosion fixing piece are in threaded connection, all parts which possibly generate sparks, electric arcs and dangerous temperature are sealed in the box body, the sealing performance is improved, the safety protection effect is achieved, and the use safety of the brake resistance box is improved.

The invention relates to the technical field of loads, in particular to a stirring type high-heat-exchange-efficiency water-cooling load which comprises a barrel and a plurality of resistance tubes, the barrel comprises a barrel body and a barrel cover which jointly define a containing cavity, and a partition plate is arranged in the containing cavity so that the containing cavity can be divided into an upper cavity and a lower cavity; the lower cavity is communicated with a water inlet pipe which is provided with a water inlet valve; the upper chamber and the lower chamber are communicated through a transition pipeline, and the transition pipeline is provided with a middle valve; the upper chamber is communicated with a water outlet pipe which is provided with a water outlet valve; a cleaning pipe communicated with the lower cavity is further arranged in the upper cavity, and a plurality of cleaning holes facing the resistance tube are formed in the side wall of the cleaning pipe; a blow-off pipe is arranged on the lower portion of the upper cavity and provided with a blow-off valve. During normal use, the hydrodynamic turbine drives the cleaning pipe and the stirring pipe to stir water in the upper chamber through flowing rotation of water flow, so that heat exchange between the resistance tube and cooling water is accelerated, and heat exchange of flowing dead angle water in the upper chamber is also accelerated.

The utility model relates to a standardized gap lightning arrester with an insulation support and a fault indication function, which comprises a standardized gap lightning arrester body, the insulation support is mounted at the lower end of the standardized gap lightning arrester body, a disconnector is mounted at the lower end of the insulation support, and a second screw is mounted at the tail end of the disconnector. A mounting hole is formed in one side, far away from the lower end of the standard gap lightning arrester body, of the insulating bracket, the mounting hole in the insulating bracket is connected with the mounting hole in the metal bracket through a first screw, and a second screw at the tail end of the disconnector is connected with the first screw at the joint of the insulating bracket and the metal bracket through a copper wire woven belt. According to the utility model, the disconnector, the insulating bracket and the metal bracket are arranged on the standard gap lightning arrester body, so that when the lightning arrester is broken down by lightning stroke, the disconnector falls off and forms a fault mark, operation and maintenance personnel can easily find a fault point and can carry out targeted maintenance, and meanwhile, due to the insulating bracket, secondary accidents can be avoided.

This chip resistor is provided with a ceramic substrate, two electrodes that are disposed on the ceramic substrate, and a resistor that electrically connects the two electrodes. The ceramic substrate comprises a base material that contains a sintered body of ceramic particles (A) and a covering that contains a sintered body of α-alumina particles (B). The covering covers at least a part of the surface of the base material. The average particle diameter of the α-alumina particles (B) is smaller than the average particle diameter of the ceramic particles (A). The ceramic substrate has a support surface, the support surface-side surface of the base material is covered with the covering, and the resistor overlaps the support surface.

To provide a multilayer ceramic electronic component capable of achieving an improvement in deflection resistance.SOLUTION: A multilayer ceramic electronic component includes a laminate 10 including an internal electrode layer 30, and a pair of external electrodes 40 disposed on both ends of the laminate 10. The external electrodes 40 each include a main surface side external electrode 411A, and the main surface side external electrode 411A has a surface 411sA facing a main surface TS. The surface 411sA includes a step portion 900 that lowers the height of the surface 411sA, of the laminate 10, on a center side in a length direction L than that of the surface 411sA of the laminate 10 on the outside in the length direction L, in the height from the main surface TS to the surface 411sA. The step portion 900 has a shape curved convexly toward the center in the length direction L and extends across a width direction W at the surface 411sA.SELECTED DRAWING: Figure 2

A method for applying a coating to at least one electronic component is described comprising the following steps: A) Providing a coating arrangement (1) comprising a coating roller (2), wherein the coating roller (2) is rotatable around a rotation axis (R); B) Providing a coating material (3) on the coating roller (2); C) Providing at least one electronic component (10); D) Moving the at least one electronic component (10) along the rotating coating roller (3) to obtain a coating (12) of at least a part of the electronic component (10). Moreover, a coating arrangement (1) for applying a coating (12) to at least one electronic component (10) is described.

An overvoltage protection apparatus (14) has at least one isolator apparatus (38) which is provided in a housing (50), a thermally conductive element (40), an operating element (42) for operating an indicator apparatus (44), and a locking element (58), wherein the thermally conductive element (40) is in contact with the housing (50). The operating element (42) is attached to the thermally conductive element (40) by means of the locking element (58) and the attachment is formed in such a way that the locking element (58) becomes detached from the thermally conductive element (40) and / or from the operating element (48) and releases the operating element (42) when a predetermined temperature at the locking element (58) is exceeded. The invention further discloses a modular overvoltage protection system (10).

To provide a temperature sensor in which a thermistor is accurately determined with respect to a case.SOLUTION: A thermistor assembly body 110 includes a thermistor 111, rigid two lead members 112, and a first resin part 113. A first end part 1121 of the two lead members 112 is connected to the thermistor 111 and the thermistor 111 is sealed by the first resin part 113.SELECTED DRAWING: Figure 6

An air cooled resistor arrangement comprising a first elongated tube member which is housed inside a second elongated tube member. The first and second elongated tube members are spaced apart from each other by an air gap for allowing a flow of air to flow through the first elongated tube member and the air gap.

The utility model discloses a waterproof sealing structure of an air blower resistor, relates to the technical field of waterproof sealing structures, and provides the following scheme aiming at the problems that in the prior art, the anti-condensation effect is poor, condensed water drops are easily gathered and flow into the connecting part of the resistor and a device to cause short circuit, and the waterproof sealing structure of the air blower resistor comprises a resistor body, a waterproof shell is fixed outside the resistor body, a waterproof base is inserted into the bottom of the resistor body, and the waterproof base comprises a bottom plate. According to the utility model, condensed water drops are drained through the arranged waterproof housing, most of water flows out through the isolation frame, the waterproof platform and the bottom, and a small part of water enters between the isolation frame and the bayonet socket through a gap between the waterproof housing and the isolation frame; water between the isolation frame and the bayonet socket flows into the drainage shell through the arranged inclined block, and the baffle is pushed outwards through gravitational potential energy generated by the inclined block, so that the water is discharged outwards through the drainage shell.

The utility model provides a resistor element. The resistor element comprises a substrate; the resistor body is arranged on the front surface of the substrate; and the first protection layer is arranged on the back surface of the substrate. According to the invention, the first protection layer is arranged on the back surface of the substrate, so that the substrate is protected by the first protection layer, the possibility of appearance damage of the resistor in the manufacturing process is effectively reduced, and the product yield is greatly improved.

This negative-characteristic thermistor is provided with: a ceramic substrate formed from a ceramic composition containing Mn, Ni, and Fe; and an external electrode provided at an end portion of the ceramic substrate, in which the external electrode includes a base layer covering the end portion of the ceramic substrate and including Cu and glass, and a plating layer covering the base layer, and the Ni content, the Mn content, and the F content in the ceramic substrate satisfy the following formulae (1) and (2): 26.4 mol% < = [Ni] < = 29.5 mol%, 1.65 < = [Mn] / [Fe] < = 1.90 (2). Wherein [Ni], [Mn], and [Fe] are the contents (mol%) of Ni, Mn, and Fe, respectively, when the total content of Mn, Ni, and Fe contained in the ceramic matrix is 100 mol%.

A sensor device (1) for measuring the temperature of a surface (9A) is described, comprising: at least one sensor element (2); a ceramic housing (3) in which the sensor element (2) is at least partially disposed within the ceramic housing (3); a base (5) at least partially surrounding the ceramic housing (3); an external housing (8) connected to the base (5) in which the external housing (8) at least partially encloses the base (5) and the ceramic housing (3); and at least one mounting element (7) adapted and positioned to mount the sensor device (1) to a target application (9), wherein the ceramic housing (3) is adapted and positioned to be in direct mechanical contact with the surface (9A) whose temperature is to be measured. Furthermore, the use of the sensor device (1) is described.

The present invention relates to a jumper element, a shunt resistance device, and a method for adjusting characteristics of a shunt resistance device for current detection. A jumper element (10) for constituting a shunt resistance device for current detection is made of an electrically conductive metal material. The jumper element (10) has a main body portion (11) capable of being joined to a resistor body (5) constituting a part of the shunt resistance device, and a protruding portion (12) formed at a side portion of the main body portion (11), the protruding portion (12) being positioned so as not to overlap the resistor body (5).

To suppress peeling-off of a glass layer.SOLUTION: A circuit substrate 10 includes a substrate body 11, a pair of electrodes 41, 42, a resistive element 60, and a glass layer 70. The substrate body 11 is made of a ceramic. The pair of electrodes 41, 42 are spaced apart from each other on the substrate body 11. The resistive element 60 is positioned so as to cross the pair of electrode 41, 42. The glass layer 70 covers the pair of electrode 41, 42 and the resistive element 60. When in an area where the resistive element 60 and the glass layer 70 are arranged on the substrate body 11 between the pair of electrodes 41, 42, an area centered between the pair of electrodes 41, 42 is defined as a central part, a minimal distance T2 between the substrate body 11 and a surface of the glass layer 70 at the central part is shorter than a minimal distance T1 between the surface of the glass layer 70 and the substrate body 11 at a periphery P of the resistive element 60 located on the electrodes 41, 42.SELECTED DRAWING: Figure 4

The invention relates to a protective device (11) for an electronic component (10), wherein the protective device (11) can be arranged to at least partially encompass the at least one electronic component (10) and an electronic component (10) with such a protective device (11).

This multilayer resistor is configured as a multilayer structure comprising: a resistor of a plate-form shape, the resistor having a first flat surface and a second flat surface in the thickness direction thereof; a first electrode that is formed on the first flat surface; and a second electrode that is formed on the second flat surface. The multilayer resistor comprises a base electrode layer that is disposed on the first flat surface, the first electrode is formed on the base electrode layer, the resistor is configured from a metal body that is composed of an electroconductive metal material and insulating particles that are composed of an insulating material, and the insulating particles include first insulating particles that have a particle diameter of 5 μm or greater.

The invention discloses a pi-shaped chip high-voltage pulse attenuation network resistor and a manufacturing method thereof, and belongs to the technical field of electronic components. The network resistor structure comprises a ceramic substrate, a resistive layer, a resistive layer R1, a resistive layer R2, a resistive layer R3, a surface electrode, a back electrode, a side electrode, an electrode nickel-plated layer, an electrode lead-tin-plated layer, a glass protection layer and an epoxy resin layer. The manufacturing method comprises the following steps: printing a surface electrode on the upper surface of a ceramic substrate, printing a back electrode on the lower surface of the ceramic substrate, printing a resistive layer bridged on the surface electrode, printing protective glass on the resistive layer, carrying out laser resistance trimming on the resistive layer, printing an epoxy resin protective layer and a mark on the protective glass, and sputtering a metal layer on the end surface. And preparing an electrode nickel-plated layer and a lead-tin-plated layer on the end surface. The problems that in the prior art, overheat burnout is likely to occur, electrodes are likely to be eroded in a humid or sulfur-containing environment, and the manufacturing precision and stability are difficult to improve and control are solved. The resistor is widely applied to the technical field of attenuation network resistors.

To provide a powder composition for thick-film resistor coating that can be calcined at 650°C or lower, or even at lower temperatures, has chemical resistance, and is substantially free of lead, and a glass paste for thick-film resistor coating.SOLUTION: A powder composition for thick-film resistor coating contains lead-free glass powder, and inorganic oxide powder. There is also provided a glass paste for thick-film resistor coating that contains lead-free glass powder, inorganic oxide powder, resin, and solvent.SELECTED DRAWING: None

The invention relates to a resistor assembly (2) comprising at least one connecting element (3, 3 ') and at least one resistor element (4). A coating (5) is applied as a substrate to at least a portion (411) of the surface (41) of the resistor element (4) or as a substrate to at least a portion (311) of the surface (31) of the connecting element (3, 3 '), said coating having at least one layer (50, 51, 52, 53). According to the invention, the coating (5) is designed such that the metal and the semiconductor are in direct contact at a boundary surface (61) between the substrate and the coating (5), such that a p-n transition is formed at the boundary surface (61), and / or the metal and the semiconductor or the first semiconductor and the second semiconductor are in direct contact at least at a boundary surface (62) between the first layer (50, 51) and the second layer (52) of the coating (5), such that a p-n transition is formed at the boundary surface (61). This is such that a p-n transition is formed at the boundary surface (62). The layer (50, 51, 52, 53) of the coating (5) may be in contact with an uncoated portion (412, 412 ') of the surface (41) of the resistor element (4) or an uncoated portion (312) of the surface (31) of the connection element (3, 3'), or both the first layer (50, 51) and the other layer (52, 53) of the coating (5), in order to detect a measurement signal for determining the temperature of the resistor assembly (2).

To provide an electronic component capable of achieving both adhesion and visibility of a mark to an element body. An electronic component includes an element body and a mark formed on the element body. A main material of the mark is different from a material of the element body. The mark includes a first portion that constitutes a part of the mark and a second portion located at a position different from the first portion and connected to the first portion. A ratio of a main material of the mark included in the first portion is lower than a ratio of a main material of the mark included in the second portion.

The utility model discloses a load box with an adjusting function. The load box comprises a device body and a plurality of resistors arranged in the device body. An electrical installation assembly and a plurality of wiring copper bars are arranged on one side of the device body, the wiring copper bars are located below the electrical installation assembly, and an operation panel is arranged on one side of the electrical installation assembly; a cavity is formed in the device body, grid plates are symmetrically arranged on the two sides of the cavity, a heat dissipation assembly is arranged on one side of the resistor, and the resistor and the heat dissipation assembly are both arranged in the cavity; according to the resistor box, the grating plates are arranged on the two sides of the resistor and the heat dissipation fan, heat can be rapidly dissipated from the air openings while heat dissipation of the resistor is achieved, heat in the resistor box cannot be increased, the heat dissipation effect is improved, in addition, the size of the resistor is controlled through the multiple operation knobs, flexible adjustment of the resistor box is achieved, and the test effect is improved.