14results about "Multiple capacitors" patented technology

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 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 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 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 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 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.