摘要:
Reactive fuses that contain reactive fuse elements for use in electrical circuits and other applications are provided. In various exemplary embodiments reactive materials and reactive foils are employed to provide a focused, localized heat source which can by used to open or sever a fuse element, or precisely join one or more metallic components. In particular, reactive material can be utilized to open a fuse element in response to the heat generated by a sustained overload current. Alternatively, reactive material may be utilized in the construction of a reactive fuse to join, for example, metallic components to a base fuse element or fuse cap.
摘要:
Over-temperature protection devices, over-temperature applications on substrates, such as printed circuit boards, and over-temperature protection circuits, e.g., over-temperature protection in combination with a fuse or heater are provided. In various embodiments a shape memory alloy member is used, which can either break electrical contact with a conductor (open a circuit) or make electrical contact with a conductor (close a circuit). Upon opening a first circuit, the member can move to contact another conductor and complete a second circuit. The member can close a circuit, which is in parallel with a fused load, to provide a short circuit path that opens a fuse upon an over-temperature condition occurring, e.g., within an electrical device such as a cell phone or battery. Or, the member can be provided in parallel with a heater that energizes upon an overcurrent condition, triggering the member to open a circuit.
摘要:
An improved electrical circuit that includes an embedded electrical component and an embedded voltage variable material (“VVM”) is provided. In one embodiment, the embedded VVM is provided as a voltage variable substrate, which is used in combination with an embedded electrical component, such as an embedded resistive material or an embedded capacitive material.
摘要:
A fused conductor includes a first conductor portion, a second conductor portion, and a fuse element in electrical communication with the first and second conductor portions via at least one dual metal wire, the fuse element protected by a glass body bonded chemically to the dual metal wire.
摘要:
In one aspect of the present invention, subminiature fuses are soldered to a PCB via clips attached to the fuse end caps. The clips are physically attached to the PCB pads, enabling the fuse to be replaced if needed and providing thermal decoupling between the fuse and the heating sinking solder/PCB pads. The fuse and clips can also be picked and placed in one operation. In another aspect, improved fuse clips are provided that include tabs that separate the housing portions of the clips from the heating sinking solder/PCB pads. Such improved clips further enhance thermal decoupling. In a further aspect, an improved fuse is provided, in which the thermal decoupling tabs just described are provided directly with the fuse. In yet a further aspect, a thermally insultive fuse body is provided to further decouple the fuse element from its surroundings.
摘要:
Electrical fuse indicators which may be used to diagnose and identify a fault state or failure mode of the electrical fuse include in various exemplary embodiments, indicator materials such as a reactive material, which are incorporated into various fuse indicator devices to cooperate with a visually perceptible indicator portion or layer to indicate the failure mode or fault state if the electrical fuse.
摘要:
Systems and methods are provided for line of sight, hands free interaction with interactive objects within a defined space on a line of sight basis. The system can include a base station in communication with one or more interactive objects having a variety of display options. Details about the display options are stored on the system along with the location of the interactive objects and layout of the surroundings of the interactive object. Users can carry devices that are in communication with the base station and that determine the user's location and head orientation and relay that information to the base station. Using the location and orientation of the user, the location of the interactive objects and the layout information about the surrounding area, the system can determine if the user is looking directly at an interactive object and can cause the interactive object to perform an action.
摘要:
The instant application provides methods and related compositions pertaining to novel HIV envelope proteins. In some embodiments, the invention relates to methods and compositions for the preparation, production, and administration of isolated novel HIV envelope nucleic acid and protein sequences suitable, for example, as vaccines against HIV.
摘要:
Systems and methods are provided for facilitating transactions between consumers and merchants on trust based credit. The systems and methods described herein enable a series of operations whereby a purchaser can initiate a transaction and instead of paying using a credit card or cash, the consumer can use trust based credit “tab” with the merchant and pay its bill at a later time. Based on this selection, a credit transaction request (identifying the consumer, the merchant and the credit amount) can be transmitted to the system server. In response, the system server can generate a report with the consumer's credit transaction history and credit profile and transmit the information back to the merchant. The merchant can elect to approve and finalize the credit transaction or decline. The consumer's transaction history can be updated with the transaction and all necessary adjustments to the consumer's credit profile can be made.
摘要:
A circuit protection device includes a fuse placed in electrical communication with first and second conductors. An overvoltage protection component is placed in electrical communication with the first conductor and a third conductor. An insulative housing encloses the fuse, overvoltage protection component and portions of the first, second and third conductors. The first and second conductors include first and second terminal portions, respectively, that extend through the housing and reside at least substantially flush with an outer surface of the housing.