23results about "Multiple capacitors" patented technology

In some implementations, a superconducting integrated circuit has a tunable parallel-plate capacitor, and a magnetic field generator operable to apply a magnetic field to the tunable parallel-plate capacitor to tune a capacitance of the tunable parallel-plate capacitor. The tunable parallel-plate capacitor includes a first capacitor plate having a plane, a second capacitor plate having a plane, and a dielectric interposed between the first capacitor plate and the second capacitor plate. The plane of the second capacitor plate is geometrically parallel to the plane of the first capacitor plate. In some implementations, a superconducting integrated circuit has a tunable parallel-plate capacitor, and an electric field generator operable to apply an electric field to the tunable parallel-plate capacitor to tune a capacitance of the tunable parallel-plate capacitor. The tunable parallel-plate capacitor includes a pair of capacitor plates, and a dielectric interposed between the pair of plates.

A variable capacitor comprising: a first elongate member comprising a first electrically conductive portion positioned towards a first distal end of the first elongate member and a second electrically conductive portion positioned towards a second distal end of the first elongate member, wherein the first elongate member is configured to pivot on a first fulcrum positioned between the first and second electrically conductive portions, wherein a first distance between the first fulcrum and the first electrically conductive portion of the first elongate member is different to a second distance between the first fulcrum and the second electrically conductive portion of the first elongate member; a second elongate member comprising a first electrically conductive portion positioned towards a first distal end of the second elongate member and a second electrically conductive portion positioned towards a second distal end of the second elongate member, wherein: one of the first and second elongate members is a cathode and the other of the first and second elongate members is an anode, a first capacitor is formed by the respective first electrically conductive portions of the cathode and anode, wherein a capacitance of the first capacitor is a function of a first pivoting angle of the first elongate member on the first fulcrum, and a second capacitor is formed by the respective second electrically conductive portions of the cathode and anode, wherein a capacitance of the second capacitor is a function of the first pivoting angle of the first elongate member on the first fulcrum, the first and second electrically conductive portions of the cathode are connected to a positive voltage of a first electric circuit, the first and second electrically conductive portions of the anode are connected to a negative voltage of the first electric circuit, such that the first and second capacitors are connected in parallel, and wherein: application of an electrical potential difference by the first electric circuit causes pivoting of the first elongate member and a corresponding variation in the capacitance of the first capacitor that is proportional to the electrical potential difference and a corresponding variation in a capacitance of the second capacitor that is inversely proportional to the electrical potential difference, wherein the magnitude of the variations in capacitances of the first and second capacitors are different such that a sum of the capacitances of the first and second capacitor varies as a function of the electrical potential difference.

The utility model relates to the technical field of electromagnetic induction heating devices, and provides a capacitor structure for electromagnetic induction heating, which comprises a storage box, a plurality of connecting columns and a switching mechanism, and is characterized in that two capacitors with different frequencies are arranged in the storage box; the multiple connecting columns are fixed to the storage box in a penetrating mode. The switching mechanism comprises a first guide piece, a second guide piece and a switching piece. The first guide piece and the second guide piece are electrically connected with the two connecting columns connected with one pin of the capacitor respectively. The switching sheet is selectively and electrically connected with the first guide sheet and the second guide sheet. According to the utility model, the plurality of connecting columns, the first guide sheet, the second guide sheet and the switching sheet are arranged, and the switching sheet is selectively conducted with the first guide sheet and the second guide sheet, so that capacitors with different frequencies can be respectively connected to the electromagnetic induction heating circuit through the switching sheet, thereby reducing the operation and maintenance cost of the device and improving the switching efficiency of the capacitors.

A vibration-driven energy harvester includes: a base; a movable assembly that includes a first movable electrode and a second movable electrode; a first fixed electrode disposed so as to face opposite the first movable electrode; a second fixed electrode disposed so as to face opposite the second movable electrode; an elastic support member having a fixed end fixed to the base, the elastic support member supporting the movable assembly; a first electret formed at least at one of the first movable electrode and the first fixed electrode; and a second electret formed at least at one of the second movable electrode and the second fixed electrode, wherein: a gap distance between a front end of the second movable electrode and a facing surface of the second fixed electrode facing the front end of the second movable electrode is different from a gap distance between a front end of the first movable electrode and a facing surface of the first electrode facing the front end of the first movable electrode.

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 invention provides a radio frequency (RF) micro electro mechanical system (MEMS) switch. The switch comprises a substrate; a first signal conductor on the substrate; a ground conductor supported on the substrate on either side of the first signal conductor; and a MEMS bridge, at least one end of which is mechanically connected to the substrate through at least one anchor point, the MEMS bridge comprising a variable capacitor region disposed over the first signal conductor, the variable capacitor region comprising a first dielectric layer and a first conductive layer, the first conductive layer is located on a surface of the first dielectric layer facing the substrate and is divided into at least a first longitudinal conductive portion and a second longitudinal conductive portion, the first longitudinal conductive portion and the second longitudinal conductive portion being spaced apart in a direction perpendicular to a longitudinal length of the MEMS bridge, wherein the substrate comprises one or more pull-down substrate conductors, and the MEMS bridge comprises one or more actuatable conductors located between the anchor point and the variable capacitor region and disposed above the one or more pull-down substrate conductors, wherein at least one of the one or more actuatable conductors includes an embedded portion extending longitudinally along the MEMS bridge and between the first and second longitudinal conductive portions.

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.

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.

The invention relates to the technical field of capacitors, in particular to a high-strength variable array capacitor and a filtering connector, and solves the problem that electrical parameters of an array capacitor in the prior art are fixed and non-adjustable. The capacitor comprises a grounding metal ring and an inner hole metal ring, and a plurality of layers of capacitor assemblies are arranged in the grounding metal ring; the grounding ends of the capacitor assemblies are connected with the grounding metal ring, the signal ends of the capacitor assemblies are connected with the inner hole metal ring, the surface of the uppermost capacitor assembly is provided with a capacitor electrode I and a capacitor electrode II which are used for being externally connected with a capacitor, the capacitor electrode I is connected with the inner hole metal ring, and the capacitor electrode II is connected with the grounding metal ring. The array capacitor has the advantages that the capacitor electrodes are arranged on the surface layer of the array capacitor in advance, external capacitors of different specifications can be welded between the two electrodes according to actual filtering requirements, the total capacitance value of the array capacitor can be adjusted as required, a capacitor assembly structure does not need to be redesigned, and the electromagnetic compatibility requirements of filtering connectors of different models are met.

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.

A hard start capacitor replacement unit has a plurality of capacitors in a container sized to fit in existing hard start capacitor space. The capacitors are 4 metallized film capacitors wound in a single cylindrical capacitive element. The container has a common terminal and capacitors value terminals for the plurality of capacitors, which may be connected singly or in combination to provide a selected capacitance. An electronic or other relay connects the selected capacitance in parallel with a motor run capacitor. The hard start capacitor replacement unit is thereby adapted to replace a wide variety of hard start capacitors.

A variable capacitor comprising: a first elongate member comprising a first electrically conductive portion positioned towards a first distal end of the first elongate member and a second electrically conductive portion positioned towards a second distal end of the first elongate member, wherein the first elongate member is configured to pivot on a first fulcrum positioned between the first and second electrically conductive portions, wherein a first distance between the first fulcrum and the first electrically conductive portion of the first elongate member is different to a second distance between the first fulcrum and the second electrically conductive portion of the first elongate member; a second elongate member comprising a first electrically conductive portion positioned towards a first distal end of the second elongate member and a second electrically conductive portion positioned towards a second distal end of the second elongate member, wherein: one of the first and second elongate members is a cathode and the other of the first and second elongate members is an anode, a first capacitor is formed by the respective first electrically conductive portions of the cathode and anode, wherein a capacitance of the first capacitor is a function of a first pivoting angle of the first elongate member on the first fulcrum, and a second capacitor is formed by the respective second electrically conductive portions of the cathode and anode, wherein a capacitance of the second capacitor is a function of the first pivoting angle of the first elongate member on the first fulcrum, the first and second electrically conductive portions of the cathode are connected to a positive voltage of a first electric circuit, the first and second electrically conductive portions of the anode are connected to a negative voltage of the first electric circuit, such that the first and second capacitors are connected in parallel, and wherein: application of an electrical potential difference by the first electric circuit causes pivoting of the first elongate member and a corresponding variation in the capacitance of the first capacitor that is proportional to the electrical potential difference and a corresponding variation in a capacitance of the second capacitor that is inversely proportional to the electrical potential difference, wherein the magnitude of the variations in capacitances of the first and second capacitors are different such that a sum of the capacitances of the first and second capacitor varies as a function of the electrical potential difference.

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.

The invention belongs to the technical field of high-voltage electrical equipment, and particularly relates to a modular extensible ceramic electricity-taking capacitor assembly, a preparation method and a column switch, the assembly comprises a capacitor module formed by at least two ceramic capacitor monomers which are axially connected in series and stacked, and the total capacitance is linearly adjusted by increasing or decreasing the number of the monomers. The assembly is provided with a left shielding connection unit and a right fixing support unit which are respectively connected with the low-voltage side and the high-voltage side of the capacitor module. And the external shielding layer wraps the capacitor module, and two ends of the external shielding layer are electrically connected with the left and right side units respectively, so that the capacitor module, the two side units and the shielding layer jointly form a continuously grounded integral shielding structure, and partial discharge and electromagnetic interference are effectively inhibited. And a distributed capacitor formed between the shielding layer and the capacitor module and the ceramic capacitor jointly form a built-in low-pass filtering network. The technical effects of being adjustable in capacitance value, compact in structure and high in anti-interference capacity are achieved, and the energy taking sensor is suitable for being used in a pole-mounted switch solid-sealed polar pole.

The present invention relates to a radio frequency (RF) microelectromechanical system (MEMS) switch comprising a substrate, a first signal conductor on the substrate, ground conductors supported on both sides of the first signal conductor on the substrate, and a MEMS bridge having at least one end mechanically connected to the substrate by at least one anchor, wherein the MEMS bridge comprises a variable capacitor region provided on the first signal conductor, the variable capacitor region comprising a first dielectric layer and a first conductive layer, the first conductive layer positioned on the surface of the first dielectric layer facing the substrate. The RF MEMS switch is provided, comprising a substrate comprising one or more pull-down substrate conductors, the MEMS bridge comprising one or more operable conductors located between an anchor and a variable capacitor region and provided on one or more pull-down substrates, at least one of the one or more operable conductors comprising an embedded portion extending longitudinally along the MEMS bridge between the first and second longitudinal conductive portions.

A variable capacitor comprising: a first elongate member comprising a first electrically conductive portion positioned towards a first distal end of the first elongate member and a second electrically conductive portion positioned towards a second distal end of the first elongate member, wherein the first elongate member is configured to pivot on a first fulcrum positioned between the first and second electrically conductive portions, wherein a first distance between the first fulcrum and the first electrically conductive portion of the first elongate member is different to a second distance between the first fulcrum and the second electrically conductive portion of the first elongate member; a second elongate member comprising a first electrically conductive portion positioned towards a first distal end of the second elongate member and a second electrically conductive portion positioned towards a second distal end of the second elongate member, wherein: one of the first and second elongate members is a cathode and the other of the first and second elongate members is an anode, a first capacitor is formed by the respective first electrically conductive portions of the cathode and anode, wherein a capacitance of the first capacitor is a function of a first pivoting angle of the first elongate member on the first fulcrum, and a second capacitor is formed by the respective second electrically conductive portions of the cathode and anode, wherein a capacitance of the second capacitor is a function of the first pivoting angle of the first elongate member on the first fulcrum, the first and second electrically conductive portions of the cathode are connected to a positive voltage of a first electric circuit, the first and second electrically conductive portions of the anode are connected to a negative voltage of the first electric circuit, such that the first and second capacitors are connected in parallel, and wherein: application of an electrical potential difference by the first electric circuit causes pivoting of the first elongate member and a corresponding variation in the capacitance of the first capacitor that is proportional to the electrical potential difference and a corresponding variation in a capacitance of the second capacitor that is inversely proportional to the electrical potential difference, wherein the magnitude of the variations in capacitances of the first and second capacitors are different such that a sum of the capacitances of the first and second capacitor varies as a function of the electrical potential difference.

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 variable capacitor bank includes a conductive housing and a port extending through the housing. An electrical bus is disposed within the conductive housing and is coupled to the port. The variable capacitor bank further includes a capacitor module disposed within the housing. Each capacitor module includes a module input electrically coupled to the electrical bus and a switched capacitor leg electrically coupled to the module input, the switched capacitor leg including a capacitor and a switching element in series with the capacitor. In some embodiments, one or more of the capacitor modules may include at least one second switched capacitor leg. The capacitor module may further include a switchless or'bottom 'capacitor that provides a minimum capacitance or other known capacitance of the capacitor module. Each capacitor module may be further grounded by being electrically coupled to the conductive housing.

The vacuum capacitor comprises a vacuum vessel 1a, which houses a fixed electrode 7 and a movable electrode 8, ensuring capacitance, and a vacuum expansion vessel 52, which is connected in series with the vacuum vessel 1a. The vacuum vessel 1a includes a movable support 91 that supports the movable electrode 8, a movable conductor 6 that supports the movable support 91 for reciprocating motion in the axial direction of the vacuum vessel 1a, a fixed conductor 51 that supports the fixed electrode 7, and a main bellows 50 interposed between the movable support 91 and the movable conductor 6. The vacuum expansion vessel 52 includes a movable portion 54 coaxially arranged with the movable support 91 and an adjustment bellows 53 interposed between the movable portion 54 and the inner end surface of the vacuum expansion vessel 52. The movable support 91 and the movable portion 54 are connected by an insulating connecting rod 55 coaxially arranged with the fixed electrode 7 and the movable electrode 8.

A vacuum variable capacitor includes a vacuum sealed enclosure to contain a vacuum dielectric medium, wherein the enclosure includes a first plate and a second plate, the first plate and the second plate being separated by an electrically insulating element, a fixed electrode attached inside the enclosure to the first plate and a movable electrode attached to a movable plate, wherein the movable plate is attached inside the enclosure to the second plate by at least one vacuum bellows, wherein the vacuum capacitor includes a mechanical drive system for displacing, in particular translating, the movable plate relative to the first plate so as to vary the capacitance of the vacuum capacitor, wherein the mechanical drive system includes a ball screw arranged to drive the movable plate and wherein the mechanical drive system includes outside of the vacuum sealed enclosure a limiting element limiting the maximum distance between the first plate and the movable plate and wherein the drive system includes a nut attached to the ball screw, wherein the nut includes a first shoulder configured to abut against the limiting element to limit the maximum distance between the first plate and the movable plate.

The present invention provides a radio frequency, RF, microelectromechanical systems, MEMS, switch comprising: a substrate; a first signal conductor on the substrate; ground conductors supported on either side of the first signal conductor on the substrate; and a MEMS bridge at least one end of which is mechanically connected to the substrate by way of at least one anchor, the MEMS bridge comprising a variable capacitor region provided over the first signal conductor, the variable capacitor region comprising a first dielectric layer and a first conductive layer, the first conductive layer positioned on a surface of the first dielectric layer facing the substrate and separated into at least a first longitudinal conductive portion and a second longitudinal conductive portion which are spaced apart in a direction perpendicular to the longitudinal length of the MEMS bridge, wherein the substrate comprises one or more pull-down substrate conductors and the MEMS bridge comprises one or more actuatable conductors located between the anchors and the variable capacitor region and provided above the one or more pull-down substrate conductors, wherein at least one of the one or more actuatable conductors comprises an embedded portion which extends longitudinally along the MEMS bridge and between the first and second longitudinal conductive portions.