49results about "Capacitor with electrode area variation" patented technology

The invention relates to the technical field of capacitors, and discloses a fine-tuning vacuum capacitor. The fine tuning vacuum capacitor comprises a vacuum chamber, an electrode assembly and an adjusting assembly, and a vacuum cavity is arranged in the vacuum chamber; the electrode assembly is arranged in the vacuum cavity and comprises a first electrode ring group and a second electrode ring group which are in coupled connection; the adjusting assembly comprises an adjusting rod and an adjusting nut, the adjusting rod comprises a connecting section, a penetrating section and an adjusting section which are sequentially arranged, the connecting section is connected with the first electrode ring set or the second electrode ring set, the penetrating section penetrates through the vacuum cavity, the adjusting section extends out of the vacuum cavity and is in threaded connection with the adjusting nut, and the adjusting nut is rotationally arranged on the outer wall of the vacuum cavity. And the coupling length of the first electrode ring group and the second electrode ring group can be changed by screwing the adjusting nut. According to the fine-tuning vacuum capacitor, the capacitance value adjusting operation is simple and efficient, and the capacitance value adjusting process is more stable.

The embodiment of the utility model relates to the technical field of capacitors, and discloses a capacitor structure and electronic equipment, and the capacitor structure comprises a fixed polar plate assembly and a movable polar plate which moves along the displacement direction. The fixed polar plate assembly comprises two first fixed polar plates and a second fixed polar plate; the first fixed polar plates and the second fixed polar plates are arranged on the same plane perpendicular to the displacement direction, and the two first fixed polar plates are symmetrically arranged on the two sides of the second fixed polar plates; the movable polar plate and the fixed polar plate assembly are oppositely arranged; the length of the first fixed polar plate in the displacement direction and the length of the second fixed polar plate in the displacement direction are both greater than the stroke amount of the movable polar plate in the displacement direction; a first gap is formed between one first fixed pole plate and the second fixed pole plate, a second gap is formed between the other first fixed pole plate and the second fixed pole plate, and the extending directions of the first gap and the second gap are different from the displacement direction. According to the embodiment, capacitance deviation caused by torsion of the movable polar plate is counteracted, the accuracy of capacitance detection is improved, and then the accuracy of position detection is improved.

The utility model discloses a variable vacuum capacitor, which comprises a shell, a moving electrode group movably arranged in the shell, a pull rod fixedly connected with the moving electrode group, a transmission mechanism in transmission connection with the pull rod, and a guide sleeve fixedly arranged on the shell, the transmission mechanism is used for driving the movable electrode group to do linear reciprocating motion through the pull rod under the driving of an external power device; the pull rod is coaxially inserted into the guide sleeve, a first ball set is arranged between the pull rod and the guide sleeve in the axial direction, and the first ball set makes rolling contact with the pull rod and the guide sleeve. According to the utility model, the friction between the pull rod and the guide sleeve is changed from sliding friction to rolling friction, so that the fit clearance and the contact area between the pull rod and the guide sleeve are reduced, thereby reducing the rotation torque and capacitance value repeatability deviation of the variable vacuum capacitor, improving the capacitance value adjusting speed and precision, and prolonging the service life of the variable vacuum capacitor. The purpose of rapidly and accurately adjusting the capacitance value of the variable vacuum capacitor is achieved.

The variable capacitor includes an enclosure having a first conductive collar and a second conductive collar separated by an electrically insulating intermediate element. A movable capacitor plate assembly is electrically coupled to the first conductive collar, and a stationary capacitor plate assembly is electrically coupled to the second conductive collar. An actuator extends into the enclosure to advance and retract the movable capacitor plate assembly relative to the stationary capacitor plate assembly. A hermetically sealed volume within the enclosure includes a fluid dielectric that acts as a dielectric between the capacitor plates of the movable capacitor plate assembly and the capacitor plates of the stationary capacitor plate assembly. A flexible structure is provided to accommodate the displaced fluid dielectric when the movable capacitor plate assembly is advanced relative to the stationary capacitor plate assembly.

The disclosure provides a multilayer ceramic electronic component including: a ceramic main body including a capacitance forming part, an edge part, and a cover part, the capacitance forming part including a dielectric layer, a first internal electrode, and a second internal electrode, the first and second internal electrodes being disposed to be stacked in a third direction with the dielectric layer interposed therebetween, the edge part being disposed on both surfaces of the capacitance forming part in a second direction, the cover part being disposed on both surfaces of the capacitance forming part in the third direction; first and second external electrodes disposed on first and second surfaces of the ceramic main body opposite to each other in a first direction, respectively; and an auxiliary electrode spaced apart from the capacitance forming part and disposed to be in contact with one of the first and second external electrodes. The auxiliary electrode is spaced apart from the first and second surfaces of the ceramic main body in the first direction.

The variable capacitor includes first and second movable capacitor plate assemblies disposed inside the housing and including first and second movable capacitor plates. A first fixed capacitor plate and a second fixed capacitor plate are disposed proximal to the first and second movable capacitor plates, respectively. The plurality of capacitor plates may comprise concentric cylindrical blades that are variably interengaged, and the first movable capacitor plate and the first fixed capacitor plate may be coaxial with the second movable capacitor plate and the second fixed capacitor plate. A plurality of actuators may be provided to move the first and second movable capacitor plate assemblies forward and backward independently relative to the first and second fixed capacitor plate assemblies, changing the capacitance of the variable capacitor by independently adjusting the amount of interengagement of the capacitor plates of each pair of capacitor plate assemblies.

The utility model discloses a vacuum capacitor, include: two electrode disc, directly or indirectly connect in two electrode disc and be configured with vacuum chamber in its inside insulating shell and two electrode groups that are fixed respectively in the inner end face of two electrode disc opposite each other and contain in vacuum chamber, two electrode groups all include a plurality of sheet shape interval arrangement distribution's electrode sheet, while the electrode sheet of two electrode groups extends to each other and does not contact each other mutually in parallel, so that the electrode sheet of two electrode groups presents the alternate distribution along the arrangement direction. The utility model discloses by adopting a plurality of sheet shape interval arrangement distribution's electrode sheet, can greatly simplify manufacturing process, has reduced the equipment procurement cost, makes vacuum capacitor's manufacturing cost and production cycle greatly drop, and product volume can achieve smaller, satisfies user to vacuum capacitor miniaturization and low cost's requirement.

A vacuum container (10) comprises a mesh tubular conductive path (5) that is stretchable in the axial direction and that is coaxially provided on the outer circumference side of a tubular bellows (4) in the vacuum container (10). The mesh tubular conductive path (5) is obtained by superposing, in multiple stages in the axial direction, elastic conductors (6) that each extend in an undulating form along the circumferential direction of the mesh tubular conductive path (5). In a pair of stages that are adjacent to each other in the axial direction among the multiple stages in which the elastic conductors are superposed, a curved portion that protrudes in the adjacent direction among curved portions (61, 62) provided to one of the pair of stages and a curved portion that protrudes in the adjacent direction among curved portions (61, 62) provided to the other of the pair of stages face each other in the adjacent direction, and are fixed to each other to form a fixed portion (71). In the pair of stages, fixed portions (71) and gap portions (7(2) are alternately and repeatedly provided along the circumferential direction.

The invention discloses a high-precision fixed-capacitance vacuum capacitor which comprises a shell, two electrode discs and two electrode sets, the two electrode discs are fixedly connected to the two ends of the shell respectively and define a vacuum cavity, and the two electrode sets are installed on the two electrode discs respectively and contained in the vacuum cavity in a mutually coupled mode; at least one electrode set comprises a fine-tuning electrode ring, at least one electrode disc is provided with an adjusting mechanism, and the adjusting mechanism is connected to the fine-tuning electrode ring and can adjust the axial position of the fine-tuning electrode ring in the vacuum cavity so as to change the coupling length of the fine-tuning electrode ring and the other electrode set. According to the invention, the capacitance value of the vacuum capacitor can be finely adjusted, the purpose of accurately adjusting the capacitance value of the vacuum capacitor is achieved, the overall height of the vacuum capacitor is not changed, the consistency of the product size is ensured, the influence on the installation of a user is avoided, and the operation difficulty and complexity are reduced at the same time.

The present application provides a trigger switch capable of detecting the amount of pressing of a trigger subjected to a pressing operation in a non-contact manner and excluding the influence of an external environmental magnetic field. The trigger switch (TS) has a first conductive plate (40) (movable electrode) that moves with the movement of a trigger (1) due to a pressing operation, and a second fixed electrode (51) (fixed electrode) that is disposed apart by a gap in the vicinity of the movement range of the first conductive plate (40) and forms a capacitor with the first conductive plate (40). The electrostatic capacity of the capacitor formed by the first conductive plate (40) and the second fixed electrode (51) of the trigger switch (TS) changes with the movement of the first conductive plate (40).

To provide a technology that can contribute to making it easier to obtain desired high-frequency current carrying capacity and operability. [Solution] A meshed tubular conductive path portion 5, which is expandable and contractible in the axial direction, is coaxially provided on the outer periphery of a cylindrical bellows 4 within a vacuum vessel 10. The meshed tubular conductive path portion 5 is formed by stacking elastic conductors 6, each shaped like a wave extending in the circumferential direction of the meshed tubular conductive path portion 5, in multiple stages in the axial direction. In a pair of adjacent stages in the axial direction among the stacked stages, a curved portion 61, 62 on one of the stages that is convex in the adjacent direction and a curved portion 61, 62 on the other of the stages that is convex in the adjacent direction are positioned opposite each other in the adjacent direction and are fixed to each other, thereby forming a fixed portion 71. In the stages, fixed portions 71 and gaps 72 are alternately provided along the circumferential direction.

The invention discloses an adjustable capacitor, which comprises an inner electrode and an outer electrode, the outer electrode is coaxially sleeved outside the inner electrode; the medium sleeve is arranged between the inner electrode and the outer electrode; one shaft end of the limiting piece extends into the outer electrode and is in contact with the outer electrode; one shaft end of the driving part extends into the limiting part and is connected with the outer electrode, the limiting part is matched with the driving part in an abutting mode to limit axial movement of the driving part, and when the driving part rotates in the circumferential direction, the outer electrode moves in the axial direction of the inner electrode so as to continuously change the overlapping area of the outer electrode and the inner electrode; the outer protection sleeve is arranged outside the outer electrode in a sleeving mode, and the two shaft ends of the outer protection sleeve are matched with the inner electrode and the limiting piece respectively so that the outer protection sleeve, the inner electrode and the limiting piece can be assembled into a whole. The invention further discloses an assembly method. According to the invention, real-time, continuous and accurate online tuning can be realized; the operation safety and convenience are greatly improved; the cost and the size are obviously reduced; and high reliability and stability in a high-pressure environment are ensured.

A vacuum capacitor is provided with a vacuum container accommodating a fixed electrode and movable electrode to ensure capacitance, and a vacuum expansion container communicating with the vacuum container in series. The vacuum container is provided with a movable support part supporting the movable electrode, a movable conductor supporting the movable support part to enable reciprocation in the axial direction of the vacuum container, a fixed conductor supporting the fixed electrode, and a main bellows interposed between the movable support part and the movable conductor. The vacuum expansion container is provided with a movable part arranged coaxially with the movable support part, and an adjustment bellows interposed between the movable part and the inner end surface of the vacuum expansion container. The movable support part and movable part are connected by an insulating connection rod arranged coaxially with the fixed electrode and movable electrode.

The present disclosure provides a multilayer ceramic electronic component including a ceramic main body having a first surface and a second surface opposite to each other in a first direction, a third surface and a fourth surface opposite to each other in a second direction, and a fifth surface and a sixth surface opposite to each other in a third direction, and an external electrode disposed on one of the third surface and the fourth surface and extending onto the first surface and the second surface. A relationship 0.9 ≤ A / BW < 1.0 is satisfied, where "A" represents a shortest distance in the second direction from an end portion of the ceramic main body on which the external electrode is disposed to an end portion of the external electrode disposed on one of the first surface and the second surface, and "BW" represents a longest distance in the second direction from the end portion of the ceramic main body to the end portion of the external electrode.

The application discloses a vacuum capacitor, which comprises an insulating shell, a first electrode group and a second electrode group, the first electrode group and the second electrode group are jointly contained in a vacuum chamber inside the insulating shell and can be coupled with each other through an electric field formed therebetween; a protective cover is arranged between the insulating shell and the first electrode group and / or the second electrode group, the protective cover is used for blocking impurities released from the first electrode group and / or the second electrode group to prevent the impurities from being deposited on the inner wall of the insulating shell; the protective cover is provided with an annular part and a flange part, an air-adsorbing element is fixed on the protective cover, the air-adsorbing element is made of a high-temperature sintering of a multi-element alloy powder on a metal base strip and is annular, and the air-adsorbing element is wrapped on the outer wall and / or the inner wall of the annular part. The application is provided with the protective cover, and the air-adsorbing element is wrapped on the annular part of the protective cover, so that the insulation resistance and the vacuum degree are greatly improved, and the service life of the vacuum capacitor is improved.

A radio frequency power detection device and a radio frequency power detection system are provided. The radio frequency power detection device includes a first microstrip line, a second microstrip line, a voltage detection unit, a capacitor unit, and a distance testing unit. The first microstrip line is connected to a radio frequency power supply. The second microstrip line is disposed parallel to the first microstrip line and coupled to the first microstrip line, and a predetermined point on the second microstrip line is grounded. The voltage detection unit is connected to one end of the second microstrip line and is configured to detect a voltage of the second microstrip line. The capacitor unit is connected to the first microstrip line and the second microstrip line, or the predetermined point on the second microstrip line is grounded through the capacitor unit.

A tamper detection device for detecting tampering with packaging is described, the device comprising: i) a first electrode comprising a first patterned structure, and ii) a second electrode comprising a second patterned structure. The first electrode and the second electrode are arranged such that the first patterned structure and the second patterned structure are at least partially opposite each other. In a first arrangement state of the first patterned structure and the second patterned structure relative to each other, a first capacitance is measurable, and in a second arrangement state of the first patterned structure and the second patterned structure relative to each other, a second capacitance is measurable, wherein the first capacitance is different from the second capacitance, and wherein the first arrangement state is different from the second arrangement state. The device further comprises: iii) a detection unit.

The application relates to the field of electronic technology and discloses a hollow-structure magnetic-field-driven vacuum variable capacitor and radio frequency source matching device, which comprises a base, the top end of the base is connected with an insulating shell, the top end of the insulating shell is provided with a metal shell, and a hollow insulating tube is arranged between the base and the metal shell. In the application, the built-in driving coil in the hollow insulating tube is electrified, the coil generates a magnetic field force under the action of the current, the magnetic field force is coupled to a permanent magnet fixed on the inner moving electrode of the vacuum capacitor, the movable electrode moves perpendicularly to the current direction of the coil, the relative area between the movable electrode and the fixed electrode is changed, the capacitor capacity is changed, compared with the existing variable vacuum capacitor, breakthroughs are made in performance, structure, function and the like, the vacuum capacitor has the characteristics of high speed, high response, high matching precision, increased service life, long-term stable vacuum degree sealing performance and small size.

The invention discloses a combined broadband chip capacitor with adjustable capacity and a preparation method thereof, the combined broadband chip capacitor comprises a dielectric ceramic body, an inner electrode is printed on the dielectric ceramic body, and the inner electrode extends to the middle part from one side of the dielectric ceramic body; the bottom end of the dielectric ceramic body is provided with a lower electrode, and the top end is provided with a first upper electrode and a second upper electrode. The first upper electrode, the inner electrode and the lower electrode form a first capacitor, the second upper electrode and the lower electrode form a second capacitor, and the first capacitor and the second capacitor form a combined broadband chip capacitor. The circuit access mode of the capacitor comprises the following steps of: randomly selecting one capacitor from the first capacitor and the second capacitor to access the circuit, and switching the other capacitor and adjusting the capacitance value according to the circuit requirement; or the first capacitor and the second capacitor are connected to the circuit at the same time after being bonded and combined through gold wires; or the circuit is accessed in a mode of leading in the first upper electrode and leading out the second upper electrode. According to the invention, the parasitic inductance is small, the use frequency is wide, and large capacitance and adjustable capacity can be realized.

This invention relates to the technical field of voltage-adjustable capacitors, and discloses a voltage-adjustable capacitor structure and its application based on an ionized double layer. The voltage-adjustable capacitor structure includes: a driving layer comprising an electrodeformable material and matching positive and negative electrodes, the electrodeformable material capable of out-of-plane deformation upon application of voltage; and an ionized capacitor layer comprising an ionically active material with surface microstructures, a pair of electrodes for reading capacitance values, and elastic washers controlling the initial spacing between the electrodes. The ionized capacitor layer is encapsulated with insulating layers on both the top and bottom. This invention utilizes the principle of an ionized double layer, applying voltage to the driving layer to generate out-of-plane deformation, transmitting uniform pressure to the flexible ionized capacitor layer. This causes dynamic changes in the contact area between the ionically active material with surface microstructures and the electronically conductive electrodes. Leveraging the high capacitance density of the double layer, a significant increase in capacitance value from 58 pF to 1200 pF is achieved, with an adjustment ratio exceeding that of existing technologies by 2-8 times.

This invention discloses a high-precision fixed-capacitance vacuum capacitor, comprising: a shell, two electrode disks, and two sets of electrode groups. The two electrode disks are respectively fixedly connected to both ends of the shell and enclose a vacuum chamber. The two sets of electrode groups are respectively mounted on the two electrode disks and coupled to each other within the vacuum chamber. At least one set of electrode groups includes a fine-tunable electrode ring, and at least one electrode disk is equipped with an adjustment mechanism. The adjustment mechanism is connected to the fine-tunable electrode ring and can adjust the axial position of the fine-tunable electrode ring in the vacuum chamber to change the coupling length between the fine-tunable electrode ring and the other electrode group. This invention enables fine-tuning of the capacitance value of the vacuum capacitor, achieving precise adjustment of the capacitance value without changing the overall height of the vacuum capacitor, ensuring product size consistency, avoiding interference with user installation, and reducing operational difficulty and complexity.

The present invention comprises a polygonal cylinder-like conductive wall part (5) which can extend / contract in the axial direction with respect to the outer peripheral side of a bellows (4) inside a vacuum container (10) and has a larger diameter than the bellows (4). A cutout part (61) having a shape penetrating in the radial direction and extending in the axial direction is provided at a central part, in the axial direction, of each corner part (6) positioned on each ridge line of the conductive wall part (5). In each of side wall parts (7) positioned between the ridge lines of the conductive wall part (5) and extending in the axial direction, an inter-cutout portion (71) positioned between the pair of cutout parts (61), facing each other in the circumferential direction, of the side wall part (7) is configured to be curved outward in the radial direction or curved inward in the radial direction. Each of the corner parts (6) has only one of the cut-out parts (61) or a plurality of the cut-out parts (61).

The application provides a vacuum capacitor and a radio frequency matching device. The vacuum capacitor comprises a shell assembly, a magnetic levitation driving coil set, a magnetic levitation mover, a connecting piece, a shielding piece, a movable electrode and a fixed electrode. The shell assembly is arranged along the direction of an axis and has a closed vacuum chamber formed inside. The magnetic levitation mover, the connecting piece, the shielding piece, the movable electrode and the fixed electrode are all accommodated in the vacuum chamber. The shielding piece divides the vacuum chamber into a first region and a second region. The movable electrode is movably arranged in the first region along the direction of the axis, the fixed electrode is fixedly arranged in the first region, the magnetic levitation mover is movably arranged in the second region along the direction of the axis, the connecting piece penetrates through the shielding piece along the direction of the axis and is connected with the magnetic levitation mover and the movable electrode respectively, and the magnetic levitation driving coil set is arranged outside the shell assembly corresponding to the second region and is used for driving the magnetic levitation mover and moving the movable electrode along the direction of the axis through the connecting piece.

The variable capacitor includes an enclosure having a first conductive collar and a second conductive collar separated by an electrically insulating intermediate element. A movable capacitor plate assembly is electrically coupled to the first conductive collar, and a stationary capacitor plate assembly is electrically coupled to the second conductive collar. An actuator extends into the enclosure to advance and retract the movable capacitor plate assembly relative to the stationary capacitor plate assembly. A hermetically sealed volume within the enclosure includes a fluid dielectric that acts as a dielectric between the capacitor plates of the movable capacitor plate assembly and the capacitor plates of the stationary capacitor plate assembly. A flexible structure is provided to accommodate the displaced fluid dielectric when the movable capacitor plate assembly is advanced relative to the stationary capacitor plate assembly.

A capacitance increasing device for increasing the capacitance between a first machine element (22), in particular a housing (22a) of an electromechanical transducer (10), and a second machine element (16), in particular a shaft (16a) of the electromechanical transducer (10), which is mounted in a rotatable manner relative to the first machine element (22), the capacitance increasing device (24) has a first electrode (26) having a first electrode body (30) and a first electrode surface (27), the first electrode (26) being arranged at a distance from a second electrode (28) during operation of the electromechanical transducer (10), the second electrode having a second electrode body (34) having a second electrode surface (29), the second electrode surface (29) being arranged at a distance from the first electrode body (30). A functional increasing capacitance (Ce) is formed by means of a first electrode (26) and a second electrode (28), the first electrode (26) being connected in an electrically conductive manner to the first machine element (22) and the second machine element (16) forming a second electrode surface (29), in particular the second electrode (28) forming the second electrode surface (29), the second machine element is coupled to the first electrode (26) in a capacitive manner, in particular the second machine element is coupled to the first electrode surface (27) in a capacitive manner.

A reverse force mechanism includes a main shaft, a main link, a movable shaft, an actuating link, a slider, an actuating shaft, a spring link, and a spring shaft. A reverse force spring is attached to the spring link. The spring shaft is fixed to a position a dimension away in a direction parallel to the slider from a base point on an extension of a line segment from the main shaft to the movable shaft when in an inserted state in which the movable shaft is farthest from a line connecting the main shaft and the actuating shaft. The dimension is set such that a resultant operating force is constant at a non-zero value. An angle between the actuating link and the slider is set to be variable within a range of 25° to 85° during operation.

This utility model belongs to the field of capacitor technology and discloses a variable vacuum capacitor. The variable vacuum capacitor includes a stationary phase group, a moving phase group, a positioning nut, a rotating screw, a support sleeve, an adapter, and a first limiting member. The moving phase group is arranged opposite to the stationary phase group, and the moving phase group can change its relative distance to the stationary phase group to adjust the capacitance value. The positioning nut is drivenly connected to the moving phase group. The rotating screw is threadedly connected to the positioning nut. The rotating screw passes through the support sleeve. The adapter is connected to the end of the rotating screw away from the moving phase group, and the adapter abuts against the end of the support sleeve away from the moving phase group. The first limiting member is located at one end of the rotating screw. When the positioning nut moves the moving phase group closer to the stationary phase group, the positioning nut abuts against the first limiting member to prevent the rotating screw from disengaging from the threaded connection with the positioning nut. This utility model can prevent the rotating screw from disengaging from the positioning nut, avoid damage to the variable vacuum capacitor, and ensure safety.

A brazing structure for a vacuum container is provided. The vacuum container includes: a fixed conductor on which a fixed electrode is supported; a movable conductor on which a movable electrode is supported; a flange pipe which is bonded to the movable conductor coaxially with the fixed electrode and the movable electrode; and a ceramic pipe which is provided coaxially therewith. One end of the ceramic pipe is bonded to the fixed conductor by brazing, with a linking flange pipe therebetween, and the other end thereof is bonded to the flange pipe by brazing, with a linking flange pipe therebetween. The linking flange pipe includes a bonding portion that is bonded to the ceramic pipe by active metal brazing using an AgCuTi-based, AgCuInTi-based, or AgCuSnTi-based metal.

The present invention discloses an adjustable mica sheet capacitor, which relates to the field of electrical component technology. The capacitor comprises a mounting base, the upper side of which is provided with a groove, a positive electrode notch and a negative electrode notch, and two symmetrically arranged fixing notches. A plurality of capacitor plates are mounted in the groove, and a first mica sheet is mounted between each two adjacent capacitor plates. The capacitor plates comprise metal plates, one side of which is provided with an electrode contact, and two symmetrically arranged fixing plates are mounted on opposite sides of the metal plates. The present invention accumulates electrical energy by using multiple staggered arc-shaped capacitor plates, and the curvature of the arc-shaped capacitor plates is controlled by bolts and a pressure plate. By changing the curvature between adjacent capacitor plates, the maximum capacity of the capacitor can be increased or decreased.