摘要:
The present invention discloses a conductive composition comprising a plurality of polymers and at least one conductive filler. The polymers are compatible under a molecular size and the form of the conductive filler includes a flake. The conductive composition of the present invention owns better electrical characteristics than a conventional conductive composition that comprises a single polymer. The present invention further discloses an over-current protection device comprising two metal foils and a PTC (positive temperature coefficient; PTC) composition layer. The PTC composition layer contains the conductive composition.
摘要:
A bicycle headset includes a first race member, a second race member, at least one rolling member, a compression ring and a sealing ring. The first race member includes a first support surface. The second race member includes a second support surface. The at least one rolling member is disposed between the first and second support surfaces. The compression ring is disposed on the second race member. The sealing ring is disposed on the compression ring.
摘要:
Different gestures and actions are used to interact with spreadsheets. The gestures are used in manipulating the spreadsheet and performing other actions in the spreadsheet. For example, gestures may be used to move within the spreadsheet, select data, filter, sort, drill down/up, zoom, split rows/columns, perform undo/redo actions, and the like. Sensors that are associated with a device may also be used in interacting with spreadsheets. For example, an accelerometer may be used for moving and performing operations within the spreadsheet.
摘要:
The invention discloses a method of implementing a fax in a next generation network, comprising steps of: either of two media gateways notifying a media gateway controller upon detection of a Fax Start signal when they communicate with each other; the media gateway controller sending in parallel a Modify command to the media gateways at the two ends of the communication based upon a negotiated fax codec mode, so as to modify the codec mode; the media gateways at the two ends modifying the codec mode based upon the Modify command, returning a Reply message to the media gateway controller, and starting a fax. The invention can reduce time for a fax switching and improve success ratio of a fax negotiation.
摘要:
An over-current protection device comprises two electrode foils, at least one conductive layer and a positive temperature coefficient (PTC) layer, wherein at least one of the electrode foils comprises a micro-rough surface, and the micro-rough surface of the electrode foil is overlaid by the conductive layer. The PTC layer is stacked between the two electrode foils, and at least one of the surfaces of the PTC layer is physically in contact with the at least one conductive layer. Accordingly, the conductive layer located between the PTC layer and the electrode foil can effectively decrease the contact resistance therebetween and avoid arcing.
摘要:
Different gestures and actions are used to interact with spreadsheets. The gestures are used in manipulating the spreadsheet and performing other actions in the spreadsheet. For example, gestures may be used to move within the spreadsheet, select data, filter, sort, drill down/up, zoom, split rows/columns, perform undo/redo actions, and the like. Sensors that are associated with a device may also be used in interacting with spreadsheets. For example, an accelerometer may be used for moving and performing operations within the spreadsheet.
摘要:
The present invention discloses a method for implementing packet forwarding control in routing device, comprising: said routing device getting a source address of a received packet and judging whether said source address is a legal source address; if it is a legal source address, confirming said packet to be a legal packet, and processing said packet with a normal process flow, and otherwise, confirming said packet to be an illegal packet and proceeding to Step b; and said routing device implementing forwarding control for said packet. The present invention solves the problems in the prior art when controlling packet forwarding, such as resource occupation and degradation of processing capability of network communication devices caused by adding data structures or increasing system overheads. The present invention provides a method for controlling packet forwarding, saving the resource of network communication equipment, improving the processing ability of the network communication equipment, and enhancing the security of the network.
摘要:
An over-current protection device comprises a chemically cross-linked positive temperature coefficient (PTC) layer and two electrode foils that can be connected to a power source to allow current to flow through the chemically cross-linked polymeric PTC layer. The chemically cross-linked polymeric PTC layer comprises at least two different PTC polymer layers, and each polymer layer comprises polymer and conductive filler and has a volumetric resistivity between 10−1 and 10−3 Ω-cm. The polymer layers have different functional groups and are alternately stacked and hot pressed to generate chemical cross-linking therebetween so as to form the chemically cross-linked polymeric PTC layer, wherein the potential difference of every 0.1 mm in thickness of the chemically cross-linked polymeric PTC layer is less than 30 volts.
摘要:
An over-current protection apparatus comprises a plurality of over-current protection devices and a bonding sheet. Each over-current protection device comprises at least one current-sensitive element, two outer electrode layers and at least one insulating layer disposed on a surface of the current-sensitive element. The bonding sheet penetrates and connects the plurality of over-current protection devices, and is disposed on a surface of the at least one current-sensitive element for insulation.
摘要:
An over-current protection device comprises two electrode foils, at least one conductive layer and a positive temperature coefficient (PTC) layer, wherein at least one of the electrode foils comprises a micro-rough surface, and the micro-rough surface of the electrode foil is overlaid by the conductive layer. The PTC layer is stacked between the two electrode foils, and at least one of the surfaces of the PTC layer is physically in contact with the at least one conductive layer. Accordingly, the conductive layer located between the PTC layer and the electrode foil can effectively decrease the contact resistance therebetween and avoid arcing.