22results about "Mechanically variable capacitor details" patented technology

The present invention relates to the field of sensor technology and discloses a centrally perforated annular ceramic capacitor, wherein the annular capacitor is formed by fusing and sintering a ceramic base and a ceramic reaction membrane, and wherein the axes of the ceramic base and the ceramic reaction membrane are each provided with through holes to provide a mounting channel for the circuit elements to be assembled, so that the annular capacitor can be more conveniently integrated into the complex circuit of the temperature-pressure sensor in order to simplify the overall structure of the temperature-pressure sensor, including the circuit and sealing structure, in this way giving the temperature-pressure sensor a structure of automated assembly in order to reduce manufacturing and assembly costs;In comparison to the disc-shaped ceramic capacitor without a through-hole in the middle, the toroidal capacitor with the arrangement of the first ring circuit and the second ring circuit has a higher initial value and a greater amount of change, so that the toroidal capacitor has a wider measuring range and a finer pressure sensing gradation to improve the accuracy of pressure detection.

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 describes a centrally perforated ring-shaped ceramic capacitor belonging to the technical field of sensors. It is formed by the combined sintering of a ceramic base (1) and a ceramic reaction membrane (2). A hole (3) is provided in the axis of the ceramic base (1) and the ceramic reaction membrane (2) to provide an assembly passage for the circuit components to be assembled, allowing the ring-shaped capacitor to be more easily integrated into the complex circuit of the temperature and pressure sensor. This simplifies its overall circuit and sealing structure and enables automated assembly, reducing production costs. Compared to a discoidal ceramic capacitor without a central hole, its first and second ring circuits (11) and (21) offer a higher initial value and a wider variation, resulting in a broader measurement range, finer pressure detection gradation, and improved measurement accuracy.(Figure for the abbreviation: Fig.1).

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 ring-shaped ceramic capacitor with a central hole is provided. [Solution] An annular capacitor is formed by sintering a ceramic base and a ceramic reaction diaphragm together. Through holes are provided in the axial centers of both the ceramic base and the ceramic reaction diaphragm, providing assembly passages to the circuit elements to be combined. This facilitates the integration of the annular capacitor into the complex circuit of the temperature-pressure sensor. By simplifying the overall structure of the temperature-pressure sensor to include only the circuit and sealing structure, the temperature-pressure sensor is equipped with an automatically assembled structure, reducing production and assembly costs. The first and second annular circuits designed for the annular capacitor have higher initial values ​​and a wider range of change compared to a disc ceramic capacitor without a through hole in the center. This allows the annular capacitor to have a wider measurement range and finer pressure sensing grading, thereby improving the accuracy of pressure measurement.

The application provides a tunable capacitor, comprising a cylinder, a high-voltage electrode, a low-voltage electrode, a tunable electrode and a plurality of shielding mechanisms; the high-voltage electrode and the low-voltage electrode are partially arranged in the cylinder, and the high-voltage electrode and the low-voltage electrode are partially arranged outside the cylinder; the part of the high-voltage electrode arranged in the cylinder and the part of the low-voltage electrode arranged in the cylinder are alternately arranged along the height direction of the cylinder; each shielding mechanism is arranged in the cylinder, and each shielding electrode is arranged between adjacent high-voltage electrodes and low-voltage electrodes; the tunable electrode is arranged in the cylinder and is used for adjusting the distance between the high-voltage electrode and the low-voltage electrode to adjust the capacitance. In the application, the shielding mechanism can block the leakage current flow path between the high-voltage electrode and the low-voltage electrode, reduce the equivalent resistance between the high-voltage electrode and the low-voltage electrode, reduce the dielectric loss of the capacitor, the tunable electrode can smoothly adjust the capacitance of the capacitor, and the difference between the capacitance of the capacitor and the rated capacitance is reduced.

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.

This invention discloses a variable vacuum capacitor capable of rapidly switching large capacitance values, comprising a first capacitor, a second capacitor, an intermediate electrode disk, and a driving device. The first capacitor includes a first electrode group A and a first electrode group C, and the second capacitor includes a second electrode group B and a second electrode group C. The intermediate electrode disk is disposed between the first and second capacitors, and the first and second electrode groups C are respectively fixed on opposite sides of the intermediate electrode disk. The second electrode group B is electrically connected to a moving disk. Conductive protrusions are provided on the intermediate electrode disk and / or the moving disk. The driving device drives the moving disk to reciprocate relative to the intermediate electrode disk, thereby switching the second capacitor between an open-circuit state and a short-circuit state. In the short-circuit state, the moving disk and the intermediate electrode disk are connected and conductive through the conductive protrusions. This invention achieves rapid switching of large capacitance values ​​by changing the short-circuit and open-circuit states of the second capacitor.

A variable capacitor includes a holder, at least one first electrode, and at least two second electrodes. The holder holds an ionic liquid, the at least one first electrode is provided in the holder, and receives either a positive or negative direct-current voltage and the at least two second electrodes are provided on portions of the holder where electric double layers in the ionic liquid are formed when the direct-current voltage is applied to the first electrode, and the at least two second electrodes supply a radio-frequency power via the holder.

The utility model discloses a semicircular array type adjustable capacitor which comprises a support, a semicircular PCB is arranged in the support, a plurality of spring ejector pin contacts are arranged in the center of the support, a plurality of semicircular series-parallel array capacitor banks are arranged on the front face and the back face of the support in a staggered mode, a circular PCB is arranged above the support, and the circular PCB is connected with a closed-loop steering engine. A plurality of spring thimbles are distributed on the reverse side of the capacitor, the front side of the capacitor is connected with a central rotating electrode, the central rotating electrode is connected with a non-standard copper connecting piece through a copper bearing, a capacitor positive electrode is arranged at the top of the non-standard copper connecting piece, a radial PCB is arranged above the non-standard copper connecting piece, and a circumferential negative electrode is arranged at the radiation end of the radial PCB. And a capacitor cathode is arranged at the circle center of the radial PCB and is connected with the circumference of the semicircular PCB. According to the utility model, the capacitance value of the capacitor can be changed so as to regulate and control the pulse width of the output current pulse.

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.

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.

The present application discloses a center-perforated annular ceramic capacitor. An annular capacitor is formed by combining and sintering a ceramic base and a ceramic reaction diaphragm, and axes of the ceramic base and the ceramic reaction diaphragm are both provided with through holes to provide an assembly path for circuit elements to be combined, and a structure of the temperature-pressure sensor as a whole is simplified, including a circuit and a sealing structure, thereby enabling the temperature-pressure sensor to have a structure of automatic assembly and reducing the production and assembly costs; the first annular circuit and the second annular circuit of the annular capacitor design have a higher initial value and wider capacitance variation compared with the central non-through hole disc-shaped ceramic capacitor, so that the annular capacitor has a wider measuring range and finer pressure sensing classification, thereby improving accuracy of pressure measurement.

This technology contributes to making it easier to obtain the desired high-frequency current conduction capability and operability. [Solution] A mesh cylindrical conductive path section 5, which is expandable and contractible in the axial direction, is provided coaxially on the outer circumference of a cylindrical bellows 4 inside a vacuum container 10. The mesh cylindrical conductive path section 5 is made up of elastic conductors 6, which have a wavy shape extending along the circumferential direction of the mesh cylindrical conductive path section 5, superimposed in multiple stages in the axial direction. In each of the multiple stages superimposed, a pair of stages adjacent to each other in the axial direction are fixed together by the curvature of one of the curved sections 61, 62 provided on the pair of stages, which is convex in the direction of the adjacent stage, and the curvature of the other of the curved sections 61, 62 provided on the pair of stages, which is convex in the direction of the adjacent stage, being positioned opposite each other in the direction of the adjacent stage and being fixed together, thereby forming a fixed portion 71. In the stages, the fixed portion 71 and the gap portion 72 are provided alternately and repeatedly along the circumferential direction.

To provide an electrode capable of reaching higher voltage, and a vacuum capacitor provided with the electrode.SOLUTION: An electrode unit for a vacuum capacitor is provided with a belt-like capacitor plate having height H. The belt-like capacitor plate is wound in a spiral shape with a maximum diameter as Dmax and a constant distance between continuing rotations. The belt-like capacitor plate includes a first longitudinal edge fitted to a support part and a second longitudinal edge. The second longitudinal edge is released, and the first longitudinal edge and the second longitudinal edge are connected by an inclined edge part so that the first longitudinal edge is longer than the second longitudinal edge at an outside end part of the spiral. The inclined edge part forms with a longitudinal axis of the belt-like capacitor plate an angle α equal to or smaller than angle αmax=(45° π / 180°) .SELECTED DRAWING: Figure 1

The utility model discloses a variable vacuum capacitor, which comprises a capacitor outer shell, two electrode ring groups accommodated in the capacitor outer shell, a positioning rod and a positioning sliding sleeve, wherein the positioning rod is fixedly connected to one electrode ring group and can drive the electrode ring group to axially move relative to the other electrode ring group; the positioning sliding sleeve is detachably installed on the capacitor outer shell in a welding mode, the positioning rod is arranged in the positioning sliding sleeve in a sliding fit mode, and the two electrode ring sets are concentrically distributed. The structural design of the detachable self-lubricating positioning sliding sleeve is adopted, and high-temperature welding is not needed, so that the positioning sliding sleeve does not generate stress and size changes, the size of an inner hole of the positioning sliding sleeve can be accurately controlled, the gap between the positioning sliding sleeve and the positioning rod can be stably controlled, and the service life of the positioning rod is prolonged. Therefore, the variable vacuum capacitor has stable capacitance value change and lower rotating torque, the capacitance value precision of the capacitor is improved, and the mechanical life of the capacitor is prolonged.

The application discloses a tinning device and tinning process for speed-regulating capacitor production and belongs to the technical field of electric appliance production. The tinning device for speed-regulating capacitor production comprises an electroplating device, further comprises a base for storing the electroplating device, the base is provided with a rotating mechanism, a rotating frame connected with the rotating mechanism, a lifting mechanism installed on the rotating frame, and a lifting frame connected with the lifting mechanism; a tinning support is arranged at the lifting frame, a storage basket for storing capacitor lead wires is arranged at the tinning support, and a cleaning pool is arranged on the base; an agitating mechanism is arranged at the cleaning pool and is used for agitating clean water in the cleaning pool. The tinning device and tinning process for speed-regulating capacitor production can realize the transfer function of capacitor lead wires between the electroplating device and the cleaning pool, and the capacitor lead wires are always located in the storage basket during the conveying process, so that the falling of the capacitor lead wires is avoided.

This utility model relates to the field of capacitor technology, specifically disclosing a capacitor heat dissipation mechanism and a vacuum capacitor. The heat dissipation mechanism includes a spiral coil and a fixed base. The spiral coil is disposed inside the capacitor body and sleeved on the outside of a bellows. The fixed base has an inlet hole and an outlet hole. The inlet end of the spiral coil is connected to the inlet hole, and the outlet end of the spiral coil is connected to the outlet hole. The fixed base is mounted on the outer shell of the capacitor body. This heat dissipation mechanism combines the advantages of efficient heat dissipation and compact structure to reduce the temperature of the bellows and maintain the stable performance of the capacitor body.

The utility model discloses a motor integrated variable vacuum capacitor, which comprises a vacuum capacitor and a motor, the vacuum capacitor comprises two electrode groups and a positioning rod fixed on one electrode group, and an output shaft of the motor is directly connected with the positioning rod in a threaded manner. The motor is used for driving the positioning rod to do linear motion in the axial direction through the output shaft so as to change the relative position of the two electrode sets. According to the utility model, by adopting the integrated structure design and installation mode that the output shaft of the motor is directly connected with the positioning rod of the vacuum capacitor, the influence of connecting pieces and mutual fit clearances thereof on the position of an electrode group of the variable vacuum capacitor is reduced, the capacitance precision of the variable vacuum capacitor is improved, and the volume of the variable vacuum capacitor is greatly reduced; and meanwhile, the manufacturing cost is reduced, and the requirements on high capacitance precision and miniaturization of the variable vacuum capacitor in the field of semiconductor manufacturing equipment are met.

This invention provides a high-voltage variable capacitor and its method of use, comprising: a sealable housing assembly with ports; an electrode assembly mounted within the cavity of the housing assembly, the capacitance value of which is adjusted by changing the effective overlap area between the electrodes; and an insulating fluid dielectric filling the cavity to immerse the electrode assembly; the fluid dielectric is a liquid dielectric. This invention also provides a method for operating the capacitor, comprising draining the original first fluid dielectric from the cavity and injecting a second fluid dielectric with a different dielectric constant. Through this structure and method, the user can replace different types of fluid dielectrics, thereby changing the overall capacitance adjustment range and voltage rating of the capacitor. The capacitor of this invention has the advantages of high voltage resistance, small size, high power carrying capacity, flexible application, and relatively low cost.