88results about "Adjustable resistors" patented technology

The invention discloses a resonance elimination circuit, method and device, and relates to the technical field of circuits, and the circuit comprises a controller, a resonance elimination resistor and a switching circuit. Two ends of the resonance elimination resistor are respectively connected with the neutral point of the voltage transformer and the ground. The controller controls the switching circuit to be switched off when ferromagnetic resonance is detected, so that the resonance elimination resistor is connected to suppress resonance; after the fault disappears, the control switch is switched on, and the neutral point is directly grounded. The controller compares the neutral point current with a first threshold value to determine resonance generation, and determines fault disappearance when the current is smaller than a second threshold value. And when the resonance elimination resistor is a variable resistor, the controller adjusts the resistance value according to the current change rate and a pre-learned mapping relation. The switching circuit can adopt a switching tube or a relay, and the controller realizes switching by controlling the switching tube to be turned off or a relay coil to be powered off. The circuit can rapidly suppress ferromagnetic resonance, guarantee system stability and improve fault processing efficiency.

The application discloses an integrated battery thermal runaway energy-absorbing resistor and a battery pack. The integrated battery thermal runaway energy-absorbing resistor is used for being integrated on a preset component of the battery pack. The integrated battery thermal runaway energy-absorbing resistor is a laminated body, which comprises a first clamping plate, a second clamping plate and an energy-absorbing laminated body clamped between the first clamping plate and the second clamping plate. The energy-absorbing laminated body comprises a plurality of resistance resistance core plates arranged at intervals. The plurality of resistance resistance core plates are connected in series to form a conductive connection. Adjacent resistance resistance core plates and the energy-absorbing laminated body and the first clamping plate and the second clamping plate are separated by phase change material plates. The application can integrate the energy-absorbing resistor with other structural components in the battery pack from the structure, improve the space utilization and improve the integration degree.

The utility model discloses a high-precision high-voltage voltage-dividing resistor, and relates to the field of electrical elements, the high-precision high-voltage voltage-dividing resistor comprises a porcelain tube, a double-strand resistance wire and two wiring terminals, the two wiring terminals are located at the same end position of the porcelain tube, the double-strand resistance wire is provided with two strands of resistance wires, the two strands of resistance wires are correspondingly connected with the two wiring terminals respectively, and the two strands of resistance wires are connected with the two wiring terminals respectively. And the double-strand resistance wire spirally extends on the outer wall of the porcelain tube along the direction far away from the wiring terminal and is connected at the tail end. The problem that in the prior art, a resistor is poor in adaptability in a high-frequency voltage scene can be solved.

This invention discloses a low-cost heating resistor paste for thermal printheads. The paste uses porous ruthenium dioxide microspheres and porous lead ruthenate microspheres as heating resistor materials, and molybdenum oxide and manganese oxide glass powder as insulating and binding materials. Submicron-sized porous microspheres form the framework structure of the heating resistor material, while micron-sized porous microspheres fill the gaps between the submicron-sized microspheres, improving the particle filling rate of the resistor body. Manganese oxide enhances the bonding force between the glass and the heating resistor material, while molybdenum oxide strengthens the resistance stability at high temperatures. Simultaneously, the addition of nano-sized yttrium trioxide further reduces the porosity of the resistor body and improves the particle filling rate. This invention's heating resistor paste abandons traditional single-particle-size materials, significantly improving resistance consistency through a special particle size combination and the addition of nano-sized yttrium trioxide. It also improves thermal conductivity, resistance adjustment performance, energy resistance characteristics, and printing efficiency. The preparation process is simple and easy to promote.

The invention relates to a model for representing a cell module for an electrical energy storage device with a number of individual cells electrically connected in parallel by means of a cell contacting unit. According to the invention, each individual cell of the cell module is designed as a potentiometer (1) with an adjustable electrical resistance, wherein each potentiometer (1) has a cell housing (1.1) with electrically insulated electrical poles (P1, P2) arranged on a cell cover (1.2), wherein one electrical pole (P1) is formed by means of a threaded sleeve (2) rotatably mounted about its longitudinal axis, one end of which is electrically insulated from the cell cover (1.2).2) protrudes, a further electrical pole (P2) is formed by means of an electrically conductive conductor track (4) and a sliding contact (3) can be positioned by rotating the threaded sleeve (2) along the conductor track (4) and thus a running length of the conductor track (4) is specified or can be specified for setting an electrical resistance value.

The utility model provides a precision adjustable resistor device, relates to resistor technical field, precision adjustable resistor device, including base, cover plate, resistor and positioning device, base and cover plate are welded together after being positioned by the positioning device, the resistor is installed in base, the positioning device includes cylinder seat, fixed column, elastic steel plate and limit piece, the fixed column is fixed in the cylinder seat, the elastic steel plate is fixed in the cylinder seat, and the limit piece is fixed in the cylinder seat. The cylinder base is fixedly installed on the face, facing the base, of the cover plate, the fixing column is fixedly installed in the cylinder base, the elastic steel plate penetrates through the fixing column, the limiting piece is fixedly installed on the elastic steel plate, a through hole is formed in the cylinder base, and when the elastic steel plate is in a non-compressed state, the limiting piece movably penetrates through the through hole, and a groove matched with the cylinder base is formed in the top of the base. A limiting groove is formed in the inner wall of the groove, before the cover plate and the base are welded, the cylinder base is aligned to the groove, when the limiting piece is extruded by the inner wall of the groove, the elastic steel plate is also extruded, and when the limiting piece reaches the limiting groove, the positioning effect is achieved.

Disclosed in the present invention is a short-range optical potentiometer module, comprising a potential base body provided with a key slot, and a potential key which is mounted inside the key slot and can be displaced up and down, wherein a reset member for resetting the potential key is also arranged inside the key slot, an optical pair transistor composed of a photosensitive element and a light-emitting element is arranged inside the potential key, the optical pair transistor can be displaced up and down along with the potential key, a key base is internally provided with a fixed grating corresponding to the optical pair transistor, the reset member is sleeved on the grating, and the grating is configured such that the flux of light received by the photosensitive element from the light-emitting element changes along with the up-and-down displacement of the potential key, thereby causing an electrical signal generated by the photosensitive element to change along with the displacement of the potential key. The module of the solution uses non-contact photoelectric elements, thereby greatly increasing the service life; when the change in flux of light at the same distance is adjusted, the overall height of the module is close to or the same as the height of a potential base body; and the module has a skillful overall structure layout, can be conveniently assembled and replaced, and has strong practicality.

To provide an axial runout prevention member which can prevent increase in size of a device on which an axial runout prevention member is mounted.SOLUTION: An input switching mechanism 30 includes a rotary encoder 32 and an axial runout prevention member 50. The rotary encoder 32 includes a body 34 and a rotary shaft 36 protruding from the body 34. An encoder knob 20 is attached to a tip of the rotary shaft 36. The axial runout prevention member 50 is attached between the rotary encoder 32 and the encoder knob 20. The axial runout prevention member 50 includes: a fixed part 52 fixed to the body 34 of the rotary encoder 32; and a restriction part 54 which is connected to the fixed part 52 and comes into contact with a side surface of the rotary shaft 36. The restriction part 54 directly presses the rotary shaft 36 to enable downsizing of a device on which the input switching mechanism 30 is mounted.SELECTED DRAWING: Figure 7

A non-contact angular displacement potentiometer comprises: a housing; the circuit board is arranged in the shell, and a Hall sensor is arranged on the circuit board; the rotating shaft is rotationally arranged on the shell and is provided with a first end arranged in the shell; the magnet is connected to the first end and is opposite to the Hall sensor; the axial end face of the first end is provided with a mounting cavity, the magnet is fixedly arranged in the mounting cavity, and the Hall sensor is partially or completely located in the mounting cavity. According to the utility model, the axial size of the angular displacement sensor can be reduced, so that the angular displacement sensor is more miniaturized.

The invention relates to a sensor comprising a ceramic substrate (1) and two metallization layers (2) applied on opposite surfaces of the ceramic substrate (1), in which the two metallization layers (2) each comprise an adhesive layer (2A) applied directly on the ceramic substrate (1) and the two metallization layers each comprise a gold layer (2B) applied directly on the ceramic substrate (1). And the gold layer is coated on the corresponding bonding layer (2A). The invention also relates to a manufacturing method for the sensor.

The invention discloses brush assembling equipment, a potentiometer production line and a brush assembling method. The brush assembling equipment comprises a material taking head, a vacuum generator, a first positioning structure, a second positioning structure, a positioning driver and a moving module. In the material taking process, the vacuum generator is matched with the air hole in the material taking head to suck the brush, and the first positioning structure penetrates into the first positioning hole of the brush, so that the relative position between the brush adsorbed by the material taking head and the material taking head is accurate. In the assembling process, the positioning driver is matched with the second positioning structure to penetrate into the second positioning hole of the to-be-assembled part, so that the relative position of the material taking head and the to-be-assembled part is accurate, meanwhile, the first positioning structure and the second positioning structure are both arranged on the material taking head, the relative position between the brush and the to-be-assembled part is accurate at the moment, and the assembling efficiency is improved. And after the suction of the brush by the material taking head is cancelled, the brush can accurately fall to the assembly position on the to-be-assembled part along the first positioning structure.

The invention discloses an optical potential device which comprises a light-emitting element and a light-sensitive element, and a peep-proof membrane is arranged between the light-emitting element and the light-sensitive element. Compared with the prior art, the peep-proof optical potential device has the advantages that the peep-proof membrane is adopted to replace a shading plate of an existing optical potential device, and the louver type light-transmitting unit is arranged on the peep-proof membrane, so that when the peep-proof membrane is overturned, the intensity of light passing through the light-transmitting unit can be stably and uniformly changed; therefore, the resistance value generated by the photosensitive element can be correspondingly and stably changed, and the condition that the resistance value is instantly increased or decreased is avoided.

Disclosed are ways for creating openings through metal oxide varistor (MOV) coatings. In some embodiments, an assembly can include a cutting apparatus including a cutting device, a rotatable platform coupled with the cutting apparatus, and a plurality of metal oxide varistors (MOVs) coupled with the rotatable platform, wherein the cutting device is capable of being biased toward the rotatable platform to form an opening in a coating formed on each of the plurality of MOVs.

The utility model discloses an optical potential device which comprises a light-emitting element and a light-sensitive element, and a peep-proof membrane is arranged between the light-emitting element and the light-sensitive element. Compared with the prior art, the peep-proof optical potential device has the advantages that the peep-proof diaphragm is adopted to replace a shading plate of an existing optical potential device, and the louver type light-transmitting unit is arranged on the peep-proof diaphragm, so that when the peep-proof diaphragm is overturned, the intensity of light passing through the light-transmitting unit can be stably and uniformly changed, and the peep-proof diaphragm is prevented from being damaged. Therefore, the resistance value generated by the photosensitive element can be correspondingly and stably changed, and the condition that the resistance value is instantly increased or decreased is avoided.

The utility model provides a novel high-precision current detection resistor. Comprising a resistance plate body and two red copper plate bodies, the side walls of the two sides of the resistance plate body are welded and fixed to the side walls of the two red copper plate bodies respectively, two voltage sampling pins extend on the resistance plate body, and current sampling pins extend on the red copper plate bodies. According to the high-precision current detection resistor, the resistor plate body is used for replacing a resistor disc in a traditional high-precision current detection resistor, the resistance value of the red copper plate body is small, the limitation of the thickness of the resistor plate body is avoided through the resistor plate body, and the temperature rise of the resistor plate body in use is reduced; the current sampling pin and the red copper plate body are made of the same material, the current sampling pin and the red copper plate body do not need to be welded, the voltage sampling pin and the resistor plate body are made of the same material, the voltage sampling pin and the resistor plate body do not need to be welded, and the voltage sampling pin and the current sampling pin do not have deviation on welding point positions. Therefore, the voltage sampling pin and the current sampling pin have excellent conductivity and mechanical strength, and the consistency of the voltage sampling pin and the current sampling pin is ensured.

The utility model discloses a PET base material potentiometer circuit which comprises an upper circuit and a lower circuit, interlayer glue is arranged between the upper circuit and the lower circuit, back glue is arranged below the lower circuit, the upper circuit is composed of an upper circuit base material, a first silver paste layer and an upper circuit insulating oil layer, and the lower circuit is composed of a lower circuit base material, a second silver paste layer and a lower circuit insulating oil layer. The upper circuit substrate, the first silver paste layer and the upper circuit insulating oil layer are sequentially arranged from top to bottom. According to the utility model, silver paste, carbon paste, insulating oil and the like are printed on the upper PET and the lower PET to form an upper circuit and a lower circuit, and then the upper circuit and the lower circuit are adhered through the double faced adhesive tape to form a resistor loop, so that the function of the potentiometer is realized; a plurality of potentiometers can be unified in the same circuit, the thickness of the product is not more than 1mm, the cost is low, the potentiometer can be freely designed and combined, even a special-shaped potentiometer can be designed, and the degree of freedom of design is improved.

Disclosed is an electrical resistor (1), in particular an electrical braking resistor, comprising: - a first electrical connection (3); - a second electrical connection (4); - a plurality of partial resistors (2) connected in parallel, each partial resistor (2.1, 2.2, ..., 2.n) being designed for a maximum power that can be supplied individually to the partial resistor (2.1, 2.2, ..., 2.n); - a switching device (5) which is designed to connect individual partial resistors (2.1, 2.2, ...2.n) of the at least two partial resistors (2) to the first electrical connection (3) and the second electrical connection (4), wherein the resistor (1) is designed to distribute an electrical power, which is supplied to the resistor (1) via the terminals (3, 4), by means of the switching device (5) as partial power to individual partial resistors (2.1, 2.2, ...2.n) of the plurality of partial resistors (2), that the partial power supplied to at least one partial resistor (2.1, 2.2, ...2.n) of the plurality of partial resistors (2) corresponds at least to the maximum power that can be supplied to this partial resistor (2.1, 2.2, ...2.n) or that the partial power which is supplied to the at least one partial resistor (2.1, 2.2, ...2.n) of the plurality of partial resistors (2) is supplied by means of an electrical connection, which is permanently established by the switching device (5), between the first electrical connection (3), the at least one partial resistor (2.1, 2.2, ...2.n) and the second electrical connection (4).

The device (111) is proposed. The device (111) comprises: - electrical resistance R depending on the illumination (116) of the photosensitive area (118) of the photoconductor (114) photo at least one photoconductor (114) configured to indicate; at least one photoconductor readout circuit (112), said photoconductor readout circuit (114) being adapted to measure the electrical resistance R of said photoconductor (114); photo at least one photoconductor readout circuit (112) configured to determine a photoconductor readout frequency (Vp) of the photoconductor (114), the photoconductor readout circuit (112) comprising at least one bias voltage source (152) configured to apply at least one modulated bias voltage to the photoconductor (114); Equipped with.

A power supply device comprises an input port, an active rectification circuit, a surge bleeder circuit, a detection circuit, a rectification control circuit, a protection control circuit and a drive circuit. The surge bleeder circuit is coupled between the input port and the active rectification circuit. The detection circuit outputs an output signal which is a normal signal in a normal state to the protection control circuit, and changes the output signal into an actuating signal in response to detecting a surge signal output by the surge bleeder circuit. The protection control circuit outputs a control signal as an operation signal in response to receiving a conventional signal, so that the driving circuit outputs a driving signal to the active rectification circuit according to the operation signal. The protection control circuit transiently interrupts the output of the control signal as the operation signal in response to receiving the actuation signal such that the drive circuit does not output the drive signal.

A ceramic component includes a ceramic body, internal electrodes inside the ceramic body, a first external electrode disposed on a first end surface of the ceramic body and extending from the first end surface to cover a part of a first side surface of the ceramic body, a second external electrode disposed on a second end surface of the ceramic body and extending from the second end surface to cover a part of the first side surface, and a third external electrode disposed on the first side surface of the ceramic body and extending from the first side surface to cover parts of first and second main surfaces of the ceramic body. The ceramic body contains particular element that is at least one of alkali metal and alkaline earth metal. In a surface layer of the first side surface of the ceramic body, a first total concentration of the particular element in a vicinity of the first external electrode and in a vicinity of the second external electrode is different from a second total concentration of the particular element in a vicinity the third external electrode.

The utility model discloses a 360-degree rudder angle transmitter, and relates to the technical field of rudder angle transmitters, the 360-degree rudder angle transmitter comprises an equipment shell, one side of the equipment shell is provided with a sealing plate seat in a fitting manner, one side of the sealing plate seat is connected with an electric connector in a penetrating manner, one side in the equipment shell is provided with a positioning mechanism, and the other side in the equipment shell is provided with a rotating mechanism. A positioning mechanism is arranged on one side of the interior of the equipment shell, the positioning mechanism is used for installing a plurality of groups of electric devices in sub-shells, the electric devices can be conveniently taken out from the interior of the equipment shell, the difficulty of replacing and disassembling the electric devices is reduced, a transceiving mechanism is arranged on the other side of the interior of the equipment shell, and the transceiving mechanism converts mechanical motion into electric signals and transmits the electric signals to the equipment shell. And the rudder angle transmitter enables the navigation control of the ship to be more intelligent. The voltage range of the sampling potentiometer is 0-5V, 2.5 V is defined to correspond to a 0 rudder angle due to the fact that the rudder angle changes in two directions, and then output data can be conveniently converted and transmitted after the rudder angle changes are amplified according to gear transmission.

A resistor substrate production method according to the present invention comprises: a coating step for coating an ink that contains a solvent, a thermosetting resin, and conductive particles onto a substrate and forming a conductive coating film; a drying step for drying a workpiece, which is obtained by providing the conductive coating film on the substrate, at a second temperature that is lower than a first temperature at which a curing reaction of the thermosetting resin progresses, and removing the solvent; a hot pressing step for sandwiching the workpiece after the drying step between a first press platen and a second press platen, which are kept at the first temperature, pressing the workpiece, and partially curing the thermosetting resin; and a firing step for placing the workpiece after the hot pressing step into a firing furnace, firing the workpiece at the first temperature, and completing the curing of the thermosetting resin. In the hot pressing step, pressing is performed after a cushioning sheet that is softer than the pressing surface of the first press platen has been placed between the pressing surface of the first press platen and the workpiece. Therefore, the produced resistor substrate has excellent wear resistance with respect to sliding.

The present invention discloses a short-distance optical potentiometer module, comprising a potentiometer seat body with a key slot and a potentiometer key installed in the key slot and capable of moving up and down. The key slot is also provided with a reset member for resetting the potentiometer key. The potentiometer key is provided with a light-pairing tube composed of a photosensitive element and a light-emitting element, and the light-pairing tube can move up and down with the potentiometer key. A fixed grating is provided in the key seat corresponding to the light-pairing tube. The reset member is mounted on the grating. The grating is configured to change the light flux received by the light-emitting element as the potentiometer key moves up and down, thereby causing the electrical signal generated by the photosensitive element to change as the potentiometer key moves up and down. The module of this solution uses non-contact optoelectronic elements to greatly increase its service life. When adjusting the light flux change at the same distance, the overall height of the module is close to or the same as the height of the potentiometer seat body. The overall structural layout of this module is ingenious, and it is easy to assemble and replace, and has strong practicality.

This invention provides low-inductance components and methods for forming them. [Solution] The low-inductance component 200 includes a multilayer monolithic device 201 which includes a first active terminal 204, a second active terminal 206, at least one ground terminal 208, 210, and a pair of capacitors connected in series between the first active terminal and the second active terminal. Leads 246, 248, 250, 251 are coupled to the first active terminal, the second active terminal and / or at least one ground terminal. The leads have respective lengths and maximum widths. The ratio of the length to the maximum width of each lead is less than about 20.

The utility model discloses an electric brush upper layer connecting material breaking-off device which comprises a supporting table, a fixed limiting structure arranged along the edge of the supporting table, an adjustable limiting structure arranged on the fixed limiting structure, a bending part, a breaking-off part and a stepping type feeding device, wherein the bending part, the breaking-off part and the stepping type feeding device are sequentially arranged along the fixed limiting structure from front to back. The utility model provides an electric brush upper layer connecting material breaking-off device which can stably and accurately complete removal of an upper layer material belt, is simple and stable in structure, not only greatly improves the removal efficiency of the upper layer material belt, but also has better operation stability, reduces the maintenance frequency of the device, and ensures the yield of production.

The invention relates to a potentiometer applied to a rail transit locomotive master electric appliance, in particular to an integrated redundant electronic potentiometer, and solves the problems of high material requirement, complex process, poor flexibility and adaptability, long-term abrasion between an electric brush and a resistor body in the use process, low cost and the like of the existing potentiometer in a railway locomotive control electric appliance. Product faults are easily caused, and the service life of the product is short. The potentiometer comprises an upper-end magnetic coding circuit board, an upper-end base, a lower-end hollow magnetic coding circuit board, a lower-end base, an upper-end control shaft, cylindrical magnetic steel, a lower-end control shaft and annular magnetic steel, the lower end control shaft is used for being connected with a control handle of a driver controller. A shaft end magnetic field shaft angle measuring circuit is used for measuring the magnetic field direction variable quantity of the cylindrical magnetic steel, and the rotating angle of the upper end control shaft is obtained; the shaft side magnetic field shaft angle measuring circuit is used for measuring the magnetic field direction variation of the annular magnetic steel, and the rotation angle of the lower end control shaft is obtained.

The invention provides a surge protection device and a manufacturing method thereof. The surge protection device comprises a first carrier and a second carrier. A first release unit mounted to the first carrier and a second release unit mounted to the second carrier. Each release unit includes a first terminal and a second terminal. The first electrode has a first insert portion for electrically and mechanically connecting the surge protection device with an external socket, and is electrically connected to the first terminals of the first and second release units. The second electrode has a second insert portion and a spring loaded movable finger. A holding member is provided to the second terminals of the first and second release units. In the first connection state, the finger portion is connected to the holding member via a low-temperature solder joint. In the second disconnected state, when the low-temperature solder joint is released, the finger is disconnected from the holding member.

The invention relates to an annular bridge arm electric reactor, and the electric reactor comprises a body which comprises a plurality of winding units, each winding unit is formed by winding a wire along a spiral path, the plurality of winding units are coaxially nested, and the winding units are annular; the connecting wire is connected with the head end of one of the two adjacent winding units and the tail end of the other of the two adjacent winding units so as to connect the adjacent winding units in series; one of the two leads is connected to the head end of the winding unit, located on the outermost side, of the body, the other of the two leads is connected to the head end of the winding unit, located on the innermost side, of the body, and the connecting wires are all located in the cross section, in the circumferential direction, of the winding unit, located on the outermost side, of the body. The connecting wire does not need to extend out of the body, the potential difference between the connecting wire and other winding units is reduced, the overall insulation design difficulty of the connecting wire and the annular bridge arm reactor is reduced, and the reliability of the annular bridge arm reactor is improved.

The present application relates to the technical field of signal processing, in particular to a resistor adjusting method and system based on MEMS technology. The present application constructs an initial conduction link by preferentially screening a topology structure with the maximum number of parallel branches, maximizes the current shunt capability at the physical level and provides redundancy space for subsequent adjustment, quantifies the load deviation degree based on the real-time collected branch current distribution data, accurately modulates the electrostatic driving force applied to a specific micro-cantilever beam by using the sensitivity mapping relationship of the driving voltage to the contact resistance, dynamically compensates the impedance difference between the branches by fine-tuning the contact pressure of the contact point, forcibly realizes the uniformization of current distribution to eliminate local hot spots and suppress the electron migration effect, and executes the maximum common substructure matching logic under the resistance value transition instruction, locks the driving voltage state of the coincident node to inherit the established load balancing parameters, and only minimizes the action of the switch combination of the residual part.

To inhibit a cam-out phenomenon in a variable resistor operation structure.SOLUTION: A variable resistor operation structure 21 includes a variable resistor 22, a switching dial 13, a spacer 23, a guide 24, and a spring 25. The variable resistor 22 is mounted on a substrate 26. The switching dial 13 rotates according to an operation of an operator. In the spacer 23, a tip 41 is fitted in the variable resistor 22 and a tip 37 of the switching dial 13 is fitted in a base end. The guide 24 is fixed to the substrate 26 and rotatably holds the spacer 23. The spring 25 biases the spacer 23 toward the variable resistor 22.SELECTED DRAWING: Figure 2