97results 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 invention discloses a vacuum capacitor capable of accurately controlling a capacitance value, which comprises a shell, two electrode discs and two electrode groups, and is characterized in that the two electrode discs are respectively connected to two ends of the shell in a sealing manner so as to form a vacuum cavity in the shell; the two electrode sets are fixedly connected to the two electrode discs in a one-to-one correspondence mode, and meanwhile the two electrode sets are contained in the vacuum cavity in a mutually coupled mode. At least one of the two electrode plates is in sealed connection with the shell through a connecting piece, the connecting piece is provided with a deformation part, and when axial acting force is applied to the vacuum capacitor, the connecting piece is stressed to enable the deformation part to deform, so that the length of the connecting piece in the axial direction is increased or reduced, and the vacuum capacitor is more compact. Therefore, the distance between the electrode disc connected with the connecting piece and the shell is changed, and the coupling area between the two electrode sets is controlled. According to the invention, the coupling area between the two electrode groups can be regulated and controlled, the accurate adjustment of the capacitance value is realized, and the requirement of semiconductor manufacturing equipment on the accurate capacitance value of the vacuum capacitor is met.

A capacitance value fast-placing vacuum capacitor includes: a housing, a first electrode group and a second electrode group. A vacuum chamber is provided in the housing. The first electrode group and the second electrode group are mutually coupled and accommodated in the vacuum chamber. An electromagnetic drive mechanism is mounted on the outer side of one end of the housing. The electromagnetic drive mechanism is capable of driving the first electrode group to shift relative to the second electrode group, the vacuum capacitor is switched between two capacitance value states. In the capacitance value rapid-switching vacuum capacitor, the electromagnetic drive mechanism is configured for rapidly adjusting and switching capacitance values of the vacuum capacitor, the capacitance value switching time of the vacuum capacitor is within one hundred milliseconds, thus meeting the requirement of an application device of the vacuum capacitor for rapid matching of an impedance matcher.

A variable capacitor includes a first movable capacitor plate assembly and a second movable capacitor plate assembly disposed in an interior space of a housing and including a first movable capacitor plate and a second movable capacitor plate. The first fixed capacitor plate and the second fixed capacitor plate are respectively arranged close to the first movable capacitor plate and the second movable capacitor plate. The capacitor plates may include variable interdigital concentric cylindrical blades, 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. Actuators may be provided for independently advancing and retracting the first and second movable capacitor plate assemblies with respect to the first and second fixed capacitor plate assemblies, so that the capacitor plates of the first and second movable capacitor plate assemblies can be aligned by independently adjusting the amount of finger intersection of the capacitor plates centered by each capacitor plate assembly. Therefore, the capacitance of the variable capacitor is changed.

The present disclosure provides an adjustable capacitor and an electronic apparatus, and relates to the technical field of radio frequency device. The adjustable capacitor of the present disclosure includes a base substrate and at least one capacitor unit on the base substrate, each of the at least one capacitor unit includes a first plate, a second plate and a first connecting arm; the first plate and the connecting arm are on the base substrate; one end of the second plate is connected to the first connecting arm, the second plate and the first plate are opposite to each other, and a certain distance is between the second plate and the first plate.

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 invention provides a stepless adjustable reactive compensation power capacitor and a working method thereof. A stepless adjustable reactive compensation power capacitor comprises a first capacitor plate, a second capacitor plate, a power mechanism and a capacitor shell, the power mechanism is used for driving the first capacitor plate to insert and separate relative to the second capacitor plate, the first capacitor plate is slidably mounted in the capacitor shell, and the second capacitor plate is slidably mounted in the capacitor shell. The second capacitor plate is installed in the capacitor shell, and the power mechanism is connected with the first capacitor plate.

The utility model discloses a variable vacuum capacitor, which comprises a capacitor body and a driving module used for driving the capacitor body to change the capacitance value, the driving module comprises a driving motor, a commutator and a transmission mechanism, and an output shaft of the commutator is in transmission connection with a rotating screw of the capacitor body through the transmission mechanism. The driving motor is fixed on one side of the commutator and is perpendicular to the capacitor body. According to the variable vacuum capacitor, under the condition that the size of the driving motor is kept unchanged, the height of the whole machine can be shortened, the driving module is ensured to have enough torque to drive the capacitor body, meanwhile, on the premise that the insulating property is ensured, a transmission mechanism can be reduced, the size can be further reduced, and meanwhile, the precision of the whole system can be improved by several times.

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 invention discloses a radio frequency laser capacitance adjusting device, and relates to the technical field of laser production, the radio frequency laser capacitance adjusting device comprises a capacitance adjusting base, and a positive plate and a negative plate are arranged above the capacitance adjusting base; and the adjusting assembly is arranged above the capacitance adjusting base and is used for adjusting the capacitance. According to the radio frequency laser capacitor adjusting device, through the positioning assembly, the supporting assembly and the limiting assembly, the bottom plate boss, the capacitor ceramic body and the capacitor pressing plate are limited and supported, stable use of the radio frequency laser capacitor is assisted, and in the process that the capacitor needs to be adjusted, the capacitor can be conveniently adjusted. The capacitance value is controlled according to the overlapping area of the two sectors when the capacitor pressing plate and the bottom plate boss are in the isolated state of the capacitor ceramic body, different capacitance values are obtained by rotating the capacitor pressing plate, the circuit starting capacitance value path of the laser is easily corrected, and the production efficiency of the laser is obviously promoted in the long-term use process.

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.

A tuneable capacitor comprises at least two parallel and coaxial conductive electrode bodies 101, 103. Each electrode body has a circular array of curved plates 105, 107 extending transversely from th

The invention relates to a capacitance-increasing device (24) for increasing an electric capacitance between a first machine element (22), in particular a housing (22a) of an electromechanical converter (10), and a second machine element mounted rotatably relative to the first machine element, in particular a shaft (16a) of the electromechanical converter (10), wherein: the capacitance-increasing device (24) comprises a first electrode (26) comprising a first electrode body (30) and comprising a first electrode surface (27); during operation of the electromechanical converter (10), the first electrode (26) is at a distance from a second electrode (28) comprising a second electrode body (34) comprising a second electrode surface (29); a functionally effective increase capacitance (Ce) is formed by the first electrode (26) and the second electrode (28); the first electrode (26) is electrically conductively connected to the first machine element (22), and the second machine element (16), in particular the second electrode (28), forms the second electrode surface (29), and is capacitively functionally effectively coupled to the first electrode (26), in particular to the first electrode surface (27).

To provide a manufacturing method for an oscillation power generation device capable of forming an electret film selectively in one of a movable electrode finger and a fixed electrode finger by a simple method.SOLUTION: A manufacturing method for an oscillation power generation device includes: a first silicon layer patterning step of patterning a first silicon layer to form a first inter-digital electrode and a second inter-digital electrode; an alkali ion solution supplying step of supplying an alkali ion solution to a surface of the first inter-digital electrode and a surface of the second inter-digital electrode with voltage applied between the first inter-digital electrode and the second inter-digital electrode so that the first inter-digital electrode side has a higher potential; a drying step of drying the alkali ion solution; an oxide film forming step of heating the first silicon layer to form a first oxide film on the surface of the first inter-digital electrode and a second oxide film on the surface of the second inter-digital electrode; and a charging step of charging the second oxide film by applying voltage to the second inter-digital electrode.SELECTED DRAWING: Figure 4

The present invention relates to a vacuum variable capacitor 1 comprising a vacuum sealed enclosure 2 containing a vacuum dielectric medium, the enclosure 2 comprising a first plate 3 and a second plate 4, said first plate 3 and said second plate 4 being separated by an electrical insulating element 5, the enclosure 2 further comprising a fixed electrode 6 attached to the first plate 3 inside the enclosure 2 and a movable electrode 8 attached to a movable plate 7, the movable plate 7 being attached to the second plate 4 inside the enclosure 2 by at least one vacuum bellows 9, the vacuum capacitor 1 being adapted to vary the capacitance of the vacuum capacitor 1. The vacuum sealed enclosure 2 has a mechanical drive system 10 for displacing, in particular translating, the movable plate 7 relative to the plate 3, the mechanical drive system 10 including a ball screw 11 arranged to drive the movable plate 7, the mechanical drive system 10 including a limiting element 14 outside the vacuum sealed enclosure 2 for limiting a maximum distance between the first plate 3 and the movable plate 7, the drive system including a nut 13 attached to the ball screw 11, the nut 13 including a first shoulder 13a configured to abut against the limiting element 14 for limiting the maximum distance between the first plate 3 and the movable plate 7.

A vacuum capacitor is provided with a vacuum container 1a that accommodates a fixed electrode 7 and a movable electrode 8 that can secure capacitance, and a vacuum expansion container 52 that communicates in series with the vacuum container 1a. The vacuum container 1a has: a movable support part 91 that supports the movable electrode 8; a movable conductor 6 that supports the movable support part 91 so as to be capable of reciprocating in the axial direction of the vacuum container 1a; a fixed conductor 51 that supports the fixed electrode 7; and a main bellows 50 that is interposed between the movable support part 91 and the movable conductor 6. The vacuum expansion container 52 is provided with a movable part 54 disposed coaxially with the movable support part 91, and an adjustment bellows 53 interposed between the movable part 54 and the inner end surface of the vacuum expansion container 52. The movable support part 91 and the movable part 54 are connected by an insulating connecting rod 55 disposed coaxially with the fixed electrode 7 and the movable electrode 8.

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 bias supply comprising power circuitry configured to apply an asymmetric periodic voltage waveform at the output node wherein the asymmetric periodic voltage waveform comprises a first section that begins with a first negative voltage and changes during a first transition to a peak voltage before changing during a second transition to a second negative voltage and a second section that begins with the second negative voltage and comprises a voltage ramp between the second negative voltage and a third negative voltage. Transition circuitry is configured to adjust a slope of one, or both, of the first and second transitions.

A brazing structure of a vacuum container (1a) is provided. The vacuum container (1a) is provided with: a fixed conductor (5) on which a fixed electrode (7) is supported; a movable conductor (6) on which the movable electrode (8) is supported; a flange tube (4) joined to the movable conductor (6) so as to be coaxial with the fixed electrode (7) and the movable electrode (8); and a ceramic tube (21) disposed coaxially therewith. One end of the ceramic tube (21) is joined to the fixed conductor (5) by means of brazing, a connecting flange tube (31) is interposed therebetween, and the other end of the ceramic tube (21) is joined to the flange tube (4) by means of brazing by means of the connecting flange tube (31) not shown in the figure. The connecting flange pipe (31) is provided with a joint part that is joined to the ceramic pipe (21) by means of active metal brazing using an AgCuTi-based, AgCuInTi-based, or AgCuSnTi-based metal.

A multilayer ceramic electronic component includes a ceramic body including a capacitance formation portion including a dielectric layer and first and second internal electrodes with the dielectric layer interposed therebetween; and first and second external electrodes disposed on the first and second surfaces of the ceramic body, respectively, and including first and second base electrodes connected to the first and second internal electrodes and first and second conductive layers disposed to cover the first and second base electrodes. When a thickness of the first and second conductive layers in a central portion of the first and second surfaces of the ceramic body is ‘a’, and a thickness of the first and second conductive layers at an end of the capacitance formation portion is ‘b’, ‘b / a’ is 0.07 or more.

To provide a rotary capacitor which can stabilize frequency modulation while increasing the life of a component.SOLUTION: A rotary capacitor 22 includes: an external conductor 15 covering a stator electrode 32 and a rotor electrode 33; and a bypass capacitor 23 for electrostatically combining the rotor electrode 33 and an external conductor 15 to each other. An electrode pair of the bypass capacitors 23 (an external conductor side electrode 24 and a rotor side electrode 25) are set to extend along the direction of the axis of rotation of the rotor electrode 33 in the outer periphery side of a metal shaft part 35a. Also, at least one of the electrode pair of the bypass capacitor 23 has a cylindrical shape.SELECTED DRAWING: Figure 4

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).

A rotating capacitor is used in a circular accelerator that accelerates a charged particle beam by feeding a first radio frequency to a DC main magnetic field. The rotating capacitor modulates a frequency of the first radio frequency. The rotating capacitor includes a stator electrode and a rotor electrode used for modulating the frequency of the first radio frequency together with the stator electrode. A vacuum seal performs vacuum sealing around a shaft for rotating the rotor electrode. A bearing that supports the shaft is installed on an atmosphere side.

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.