摘要:
An apparatus for piercing earlobes which comprises a pair of elongated, hand-held, parallel bars that can be moved towards and away from each other while an earlobe is positioned between the bars adjacent an end thereof. At that same end, one of the bars mounts an axially movable plunger to which an earlobe piercing stud can be attached. A compression spring drives the plunger and therewith the stud towards the second bar for piercing the ear. First and second levers are positioned for actuation by the same hand holding the piercing apparatus for retracting or cocking the plunger and for releasing it to pierce the earlobe. The second bar includes a recess into which a clip can be inserted which has an aperture for frictionally engaging the stud and retaining the stud to the earlobe after the latter has been pierced. The recess aligns the aperture with the axis of the plunger and a flat leaf spring is mounted to the second bar to bias the clip into the recess and retain it therein in its properly aligned position. The extent to which the two bars can be moved towards each other is adjustable.
摘要:
An electrically conductive element, including an insulator and a first conductor, is provided, which can be affixed to a second conductor consisting of conductive structural element, wherein the insulator is positioned between the first and second conductors to electrically isolate them. A power supply may be connected between the first and second conductors to provide power thereto, and an electrical device may be connected across the first and second conductors.
摘要:
The invention relates to a system and method of dispersion measurement in an optical fiber network. The invention provides means for transmitting from a transmitting node, using a single tunable laser transmitter, two consecutive bursts of data at different wavelengths λ1 and λ2 to a receiver node, wherein each burst of data comprises a unique sequence of amplitude modulated data, and wherein the two sequences are injected with a fixed known delay. The delay between the two consecutive bursts of data is maintained by selective switching of the tunable laser, such that clock recovery circuitry at the receiver node remains locked during the delay between the two bursts. The dispersion measurements method of the present invention is based on walk off and bit position detection between two wavelengths suitable for fast optical burst switching network is described. This method does not require an operator, extra equipment, or traffic interruption on the network.
摘要:
The invention provides an optical burst switch in an Optical Burst Switched (OBS) communication network, said optical burst switch comprising means for monitoring and maintaining mesh of virtual optical paths from a communication node to a plurality of other communication nodes, arranged in a ring network, enabling traffic data to be transmitted and/or received between nodes via a physical optical path. The switch also provides means for sending a data packet probe on a virtual path from a node to each other node in the OBS communication network, wherein data packet probe information received at said switch provides information of availability of the physical optical path for sending traffic data between nodes. The switch can be configured such that the rate at which this path monitoring is scheduled guaranteeing less than 50 ms protection switch in the event of monitoring a failed or degraded path.
摘要:
In one embodiment, an electronic cymbal system includes a first pickup configured to generate an electrical signal representative of vibrations in a first cymbal, and a controller configured to receive the first electrical signal and to process the first electrical signal to generate an output. The controller includes a digital signal processor (DSP) configured to subject a version of the first electrical signal to a digital signal processing technique. The digital signal processing technique includes one or more of dynamic range compression, expansion, frequency equalization, harmonic excitation, comb filtering, and pitch shifting. The cymbals may be any of variety of known cymbals, such as hi-hat, crash and ride cymbals, and may be of the perforated type configured to reduce noise for indoor use. Lighting control may be provided to illuminate the cymbal for functional or aesthetic purposes.
摘要:
Planarization methods for maintaining planar surfaces in the fabrication of such devices as BAW devices and capacitors on a planar or planarized substrate are described. In accordance with the method, a metal layer is deposited and patterned, and an oxide layer is deposited using a high density plasma chemical vapor deposition (HDP CVD) process to a thickness equal to the thickness of the metal layer. The HDP CVD process provides an oxide layer on the patterned metal tapering upward from the edge of the patterned metal layer. Then, after masking and etching the oxide layer from the patterned metal layer, the patterned metal layer and surrounding oxide layer form a substantially planar layer, interrupted by small remaining oxide protrusions at the edges of the patterned layer. These small remaining oxide protrusions may be too small to significantly disturb the flatness of a further oxide or other layer or they may be further mitigated by the application of another HDP CVD oxide film.
摘要:
A method for manufacturing synthetic jets is described. The method includes forming a hole extending through a portion of a first printed circuit board (PCB), wherein the hole defines a portion the synthetic jet assembly, and wherein the hole is positioned to enable the synthetic jet assembly to facilitate cooling a component coupled to a second PCB.
摘要:
An electrically conductive tape for walls and ceilings is provided. The tape includes a substrate configured to be applied to at least one surface including at least one surface of a wall or ceiling and at least one conductive layer applied to the substrate. The conductive layer is penetrable by at least a conductor of an electrical device to provide an electrical connection thereto. In one embodiment the conductive layer is formed from a conductive composition including an electrically conductive material therein. The conductive composition can include a conductive ink. A method of manufacturing an electrically conductive tape or film for walls and ceilings is also provided. The method includes providing a conductive composition including an electrically conductive material therein, and providing a substrate configured to be applied to at least one surface including at least one surface of a wall or ceiling. The method also includes applying the conductive composition to the substrate forming a conductive layer attached to the substrate, the conductive layer being penetrable by a conductor of an electrical device.