摘要:
A dielectric film formed on a porous valve metal body is contacted with an oxidizing agent and dried. Then, by contacting the dielectric film with a monomer solution for forming an electrolyte layer of electroconductive polymer, a electrolyte layer of a solid electrolytic capacitor is formed by an oxidative polymerization reaction. An oxidative polymerization retarding agent, which delays the oxidative polymerization reaction, is added to at least one of the solutions, an oxidant solution and a monomer solution. The oxidative polymerization retarding agent delays the oxidative polymerization reaction when it contacts with the oxidant and monomer. As a result, the permeation of the monomer for forming an electroconductive polymer layer into small pores increases, and the covering rate of the electroconductive polymer in small pores increases, which improves the capacitance appearance factor and the equivalent series resistance in high frequency region.
摘要:
A pedestal structure includes a base and a cover; a tongue on one side of one of the base and cover and a groove in the corresponding side of the other for receiving the tongue when the base and cover are engaged; and a security mechanism having a first portion on an opposing side of one of the base and cover and a second portion on a corresponding opposing side of the other for securing together the base and cover and tightly engaging the tongue and groove.
摘要:
A pedestal closure assembly has an upper housing section and a separate lower housing section, each of which include front walls, rear walls, and two side walls. These housing sections are structured and dimensioned for telescoping nesting with first and second positive locking mechanisms for a friction fit. These housing sections when locked together form an integral housing structure which has an interior space for protectively accommodating electrical, power supply or telecommunications equipment. This housing structure may be constructed of non-metallic material. The first positive locking mechanism and second locking mechanism may be positioned across from each other on opposite side walls of the housing sections, and, even more preferably, may be aligned diagonally from each other on opposite side walls of the housing sections. The lower housing section may include raised ribs to enhance the friction fit of the assembled housing sections.
摘要:
A novel device and method for electrical isolation of a locator wire for locating the position of a buried utility conveyance are disclosed. In one aspect, the device includes an electrically insulating sheath and an electrically conductive terminal in electrical communication with the locator wire. In another aspect, the present invention provides a method for electrically isolating a locator wire, including the steps of placing the locator wire in electrical communication with an electrically conductive terminal and surrounding the terminal with an electrically insulative sheath. In yet another aspect, the present invention provides a method for locating an underground utility conveyance, including the steps of positioning a locator wire in substantial alignment with the utility conveyance, placing the locator wire in electrical communication with an electrically conductive terminal surrounded by an electrically insulative sheath, applying a detectable signal to the locator wire, and detecting the signal.
摘要:
A pedestal for outdoor circuits including a vertically elongated rectangular housing having a substantial lower portion thereof mounted below grade and an integral upper portion projecting above grade. The lower portion has a lower opening for receiving conduits, cables or conductors without restriction. The upper portion has a rectangular opening for receiving selectively single or double gauged NEMA devices such as receptacles, switches, lights, etc. The area around the opening is drilled and tapped to standard NEMA specifications to easily mount the NEMA devices as well as cover plates, bezels and pivot cap covers. A long removable access cover panel fits under a peripheral rain deflector rib. This cover provides access to the wiring and to fasteners that mount the housing to a fixed abutment.
摘要:
A vented pedestal for supporting a housing that encloses electronic components and connectors has top and bottom ends, a vertical passage and a peripheral wall. An inwardly extending recess in the peripheral wall adjacent the top end has a downwardly facing recess upper wall and a recess bottom wall. The recess upper wall has vent openings therein, and the recess bottom wall is shaped to enhance air flow into the vent openings while minimizing the possibility of debris collecting in the recess.
摘要:
An apparatus for mounting a shunt or tunable joint coupler (TJC) that receives a railroad track signal from a railroad track wire. A conductive support post having a lower portion inserted into a ground surface provides above-ground mounting of the track signal terminal device. The track signal terminal device is mounted onto the support post in an electrically insulated manner. A block terminal attached to the conductive support post includes electrical contact points for electrically coupling the railroad track wire with leads from the track signal terminal device and further includes electrical contact points for electrically coupling a lightning arrestor with the conductive support post. A removable housing is attached to the conductive support post for providing an exterior encasement for the block terminal and the track signal terminal device. Within the removable housing, an electrostatic shield that is grounded to the conductive support post surrounds an above-ground portion of the railroad track wire.
摘要:
An extension housing for a data transmission pedestal is disclosed. The extension has an upper portion essentially identical to the upper portion of a base of a pedestal and a lower portion essentially identical to the lower portion of a cover section of a pedestal. The extension is simple and inexpensive and can be used singly or in multiple quantities depending upon the pedestal height to be achieved. The use of extensions alleviates inventory of different size pedestals and allows quick and easy height adjustments in the field.
摘要:
A pedestal closure assembly having a housing that defines an enclosed interior space and includes two side walls, a front wall, a rear wall, an upper portion and a lower portion. A mounting plate is supported by the housing in the interior space and serves to support electronic interconnection blocks. A grounding element to enable grounding of electrical equipment connected to any electronic interconnection block is also attached to the mounting plate. The lower portion of the housing has a scoop-shaped structure and a step structure to allow substantially vertically aligned installation and enhanced anchoring in a support medium such as earth, concrete and the like. The step portion may be formed on either the front wall or rear wall of the lower portion of the housing. The housing, mounting plate scoop-shaped structure and step structure is constructed of non-metallic material, such as high density polyethylene, or HDPE.
摘要:
A flexible and economical data transmission pedestal having a cover section and a base section, with the base section comprising two asymmetrical parts, a front and a rear. Removing the cover and the front part allows full access to the connections between service lines and a cable. The three piece pedestal also allows any piece to be easily replaced if damaged or a whole new pedestal may easily be placed around cable and service line connections on a mounting plate, all without interrupting customer service.