72results about "Tubular capacitors" patented technology

A method of manufacturing a cylindrical high voltage supercapacitor. An anode and a cathode are provided. At least one bipolar electrode is interposed between the anode and the cathode, and a separator is intervened in each pair of the above electrodes. The anode, the cathode, the bipolar electrode and the separator, as placed in the above order, are wound concentrically into a roll, so as to form the cylindrical high voltage supercapacitor.

In a capacitor, and a method of fabricating the same, the capacitor includes a lower electrode, a dielectric layer on the lower electrode, and an upper electrode on the dielectric layer, wherein the dielectric layer includes a lower dielectric region contacting the lower electrode, an upper dielectric region contacting the upper electrode, and at least one middle dielectric region between the lower dielectric region and the upper dielectric region, the at least one middle dielectric region having a less crystalline region than both the lower dielectric region and the upper dielectric region.

Multiple wound film capacitors include a hollow core formed by a first non-conducting tubular section, and a first capacitor winding wrapped around the first non-conducting tubular section. Also included are a second non-conducting tubular section wrapped around the first capacitor winding, and a second capacitor winding wrapped around the second non-conducting tubular section. The multiple wound film capacitors may also include a third non-conducting tubular section wrapped around the second capacitor winding, and a third capacitor winding wrapped around the third non-conducting tubular section. In addition, ends of the first and second non-conducting tubular sections extend beyond ends of the first and second capacitor windings.

In a method for forming a photoresist pattern, a method for forming a capacitor, and a capacitor manufactured using the same, a light is selectively irradiated onto a selected portion of a photoresist film formed on a substrate. An interfered light generated from the irradiated light is transmitted through other portions of the photoresist film except a ring-shaped portion of the photoresist film having a predetermined width along a boundary of the selected portion. The photoresist film is exposed using the interfered light and the light irradiated onto the selected portion. A cylindrical photoresist pattern having a minute width may be formed through developing the photoresist film. With the cylindrical pattern, the capacitor can be easily formed.

A charge storage fiber is described. In an embodiment, the charge storage fiber includes a flexible electrically conducting fiber, a dielectric coating on the flexible electrically conducting fiber, and a metal coating on the dielectric coating. In an embodiment, the charge storage fiber is attached to a textile-based product.

The invention provides a standard capacitor installed by a separated type coaxial structure. The standard capacitor is characterized in that the standard capacitor comprises a bottom plate, a casing component, an electrode component, a high voltage bushing, a conducting rod and a grading ring, the electrode component comprises an electrode fixing platform, a supporting insulator, a high voltage electrode, a low voltage electrode and a shield component, the casing component and the electrode fixing platform are installed at the center of the bottom plate, the low voltage electrode and shield component are fixed on a flange of the electrode fixing platform, the supporting insulator is disposed at the center of a base plate of the electrode fixing platform, the high voltage electrode is mounted at the center of the supporting insulator, and the high voltage bushing is installed at the center of the casing component. According to the standard capacitor installed by the separated type coaxial structure, the separated type structure is utilized, the low voltage electrode and the shield component are separated from a barrel wall, the change of capacitance caused by the deformation of the barrel wall is avoided, temperature coefficient and pressure coefficient are reduced, simultaneously, each part on the installing platform is positioned and processed along a central axis, the coaxiality of high and low voltage electrode assembly can be effectively guaranteed, and the voltage coefficient is reduced.

The invention can be used to keep the cooling efficiency of the capacitor and enable the capacitor to insert in the capacitor cover successfully. A power converting apparatus (1) includes a housing(10), a cylindrical capacitor(40), and a cylindrical capacitor cover(50). The housing includes a housing base(11), a main body(20), and an air duct(30). The air duct(30) is disposed on a second surface of the housing base. The capacitor(40) penetrates through the housing base so that a part of the capacitor (40)is disposed in the main body(20) while a rest part of the capacitor is disposed in the air duct. The capacitor cover(50) is disposed on the housing base(11) and covers the rest part of the capacitor(40). The capacitor cover (50) includes an elastic material and an inner surface. The capacitor cover (50) includes a groove(514) having the same size of the inner diameter of the inner peripheral surface (513) disposed on the inner surface in an axial direction of the capacitor cover.

A tubular capacitor with variable capacitance, comprising a cylindrical tube (3) of dielectric material, a metallic outer electrode (1) which surrounds the cylindrical tube (3), and an inner electrode which can axially move in the inner bore (41) of the cylindrical tube (3) and which abuts the inner bore (41), wherein the inner electrode comprises a metallic rod (2; 2a; 2b; 2c), is characterized in that the metallic rod (2; 2a; 2b; 2c) is axially extended at its end (5′), located in the inner bore (41) of the cylindrical tube (3), using a rod (9; 9a; 9b; 9c) of dielectric material. The inventive tubular capacitor has an increased dielectric strength and improves the resolution of NMR spectrometers.

The invention discloses a high-pressure isolation annular core-through capacitor which comprises a step-type shield cover, an annular insulator, a core-through electrode and an annular dielectric medium filler, wherein the step-type shield cover is made of conducting materials and is used as an electrode of the annular core-through capacitor; the annular insulator is made of insulation epoxy resin and quartz powder; the core-through electrode is in the shape of hollow convex column and is used as the other electrode of the annular core-through capacitor; and the annular dielectric medium filler is made of high pressure resistant dielectric medium materials. The annular dielectric medium is sleeved on the core-through electrode and is arranged in the step-type shield cover; and the annular insulator is arranged between the core-through electrode and the step-type shield cover. The invention effectively enhances high pressure resistant strength, prevents passing of a radial electromagnetic field in the medium of the annular core-through capacitor so as to shield the entire annular core-through capacitor, greatly enhances electromagnetic interference inhibiting ability, has integrated and good inhibiting effect to high-frequency electromagnetic interference of signals or transmission wires, and has the advantages of large capacity and strong transmission signal.

Apparatus and method for depositing a banding material on the interior substrate of a tubular device, and the products formed therefrom. The tubular device is, generally, of relatively small diameter and comprises at least one band deposited from a first composition on the interior substrate. When the tubular device is a tubular capacitor and the band is a plating mask, the tubular capacitor comprises at least two electrodes deposited on the substrate in the presence of a deposited plating mask and comprises at least one conductive layer, deposited from a first composition, on the substrate and separated by the plating mask.

The formation of an assembled unit consisting of an annular capacitor [a wound, metallized dielectric capacitor in the shape of a closed path ring] with other power conversion components arranged and attached in manners uniquely allowed by the ring design will allow higher density converter designs [power/unit volume]. The resulting short connection paths between the capacitor element and the switching semiconductors also provide a very low inductance path that minimizes voltage spikes on the switching semiconductors as a result of turn-off di/dt. The capacitor serves as a short time current source and sink for the switching semiconductors. With the described configuration the RMS current seen by the capacitor can be made more volumetrically uniform enabling more uniform capacitor rise. The single capacitor configured as described also mitigates bus resonance problems often observed in prior art when multiple discrete capacitors are connected in parallel.

A variable capacitance type capacitor is provided, which has a simple construction, can be easily housed in a thin type casing such as that of a position indicator or the like, and can be readily put into mass production. The variable capacitance type capacitor includes an inside member and an outside member including a space for housing the inside member. The inside member has a columnar shape, and a first conductor pattern is formed on a circumferential surface thereof. The outside member has a predetermined dielectric constant, and a second conductor pattern is formed on an outer circumferential surface thereof so as to oppose the first conductor pattern formed on the inside member. The inside member housed in the space of the outside member is displaced relative to the outside member in a direction of a central axis of the inside member in response to an externally applied force, and an opposed area between the first conductor pattern and the second conductor pattern changes to thereby form a capacitance corresponding to the externally applied force between the first electrode and the second electrode.

The present disclosure discloses a structural capacitor, a connector comprising the structural capacitor and a communication apparatus using the connector. The structural capacitor comprises a rod and a holder. The rod comprises a first section and a second section connected with the first section, and the holder comprises a through hole. The first section and the second section are fitted into the through hole to accomplish the connection between the first section and the second section in an axial direction. The connector of the present disclosure features a simple structure, a convenient manufacturing process and a low cost. The communication apparatus of the present disclosure has advantages such as a simple manufacturing process, parameters that can be easily guaranteed, a low processing cost and a stable product performance.

Polyphase electrical machine with n phases, n≥3, including a casing defining a longitudinal axis, a stator and a rotor including a mechanical drive shaft, the electrical machine being equipped with a power electronics and a coolant circuit and the power electronics is formed of n power electronic modules evenly distributed over an inner circumference of a longitudinal extension of the casing whose outer circumference is covered with a single annular DC bus decoupling capacitor electrically connected to the n power electronic modules, the coolant circuit including a plurality of U-shaped tubes with a tubular outgoing part extending over an entire length of the casing and including the longitudinal casing extension and a shorter tubular return part, extending over a casing length excluding the longitudinal casing extension.

Methods of fabricating an array capacitor are disclosed, in which via structures of the array capacitor have increased uniformity in their transverse areas. One method involves perforating a capacitor body to form first holes extending from a first surface and partially through the capacitor body. The capacitor body may be further perforated to form second holes extending from a second opposed surface of the capacitor body. The second holes are to connect to the first holes to provide through holes extending across a thickness of the capacitor body. An appropriate conductive material may then be filled in the through holes to form via structures with increased uniformity in their transverse areas.