摘要:
A high efficiency incandescent light bulb includes a filament both electrically and optically heated to visibly incandesce. The filament is enclosed in a visibly transmissive, IR reflective filter, with a high view factor, as to maximize recycling of IR wavelengths. The filter is formed on two clamshell segments.
摘要:
A geometrically shaped photonic crystal structure consisting of alternating layers of thin films is heated to emit light. The structure may include index matching layers or a cavity layer to enhance emissions. The layer thicknesses of the structure may be spatially varied to modify the emission spectrum versus emission angle. The self-focusing structure may be fabricated into a convex electrically heated wire filament light bulb, a concave visible thermophotovoltaic emitter, a concentric directional heat exchanger, an electronic display, or a variety of irregularly shaped remotely read temperature or strain sensors.
摘要:
A method for managing the delivery of power for a plurality of devices includes allocating a power limit for each of the plurality of devices and providing power to at least one of the plurality of devices. The method also includes, in response to the providing of power, measuring the amount of power utilized by each of at least one of the at least one of the plurality of devices and determining that the amount of power exceeds the power limit for the device.
摘要:
According to one embodiment, a method for converting alternating current voltage signals to Ethernet in-line power includes converting an alternating current voltage signal to an approximate direct current voltage signal, adding at least one odd harmonic of the approximate direct current voltage signal to produce a compensated direct current voltage signal, and conditioning the compensated direct current voltage signal to produce an Ethernet in-line power signal.
摘要:
One embodiment of an inventive networking environment includes clients called sending clients because they send network content through a network, and clients called receiving clients because they receive the network content from the sending clients through the network. Both sending clients and receiving clients are “clients” in that they rely on a management server to orchestrate the secure transfer of information from sending clients to receiving clients.
摘要:
A method for controlling multiple voltages in a power supply includes providing a plurality of DC to DC power converters. Each power converter includes a pulse width modulator controller having a control pin. The method also includes when a voltage supply to the power controllers reads a particular level. After the particular level is met, the method includes providing a respective rising ramp control signal to each respective control pin of the pulse width modulator controller such that each respective power converter generates desired voltage level over time characteristics.
摘要:
A system for quickly and reliably detecting a failed structure includes a signal source, a cable attached to the structure, an anti-slip cable anchor, a signal detector, and user indicator. When the structure fails, the cable attached to the structure is also broken. The user indicator is operable to display the status of the cable. The cable breaks due to exceeding the elastic modulus of the cable, caused by elongation of the distance between two fixed points caused by the failing structure. Electric power must be provided to each signal source, signal detector and user indicator.
摘要:
An apparatus, system and method for providing variable attenuation to data signals in an xDSL frequency range are disclosed. An attenuation device has a resistive circuit coupled to a capacitive circuit that prevents telephone signals from being attenuated by the resistive circuit and allows normal operation of telephone services at a subscriber premises.
摘要:
An over-voltage protection module protects communications equipment against voltage surges, including periodic voltage disturbances. The protection module provides a steady state activation voltage threshold and a reduced activation voltage threshold less than the steady state value. Upon a receiving a periodic disturbance, the module activates initially upon receiving a voltage exceeding the steady state activation voltage threshold and activates for subsequent cycles of the disturbance upon receiving a voltage exceeding the reduced activation voltage threshold.
摘要:
An internal combustion engine has intake and exhaust ducts, including an exhaust duct portion formed as an integral part of the engine along with the engine coolant jacket and passages, the exhaust duct portion being located in good thermal contact with the engine coolant flow passages, and flow diverting valves in the exhaust duct portion to direct exhaust gases to flow through the exhaust duct portion when the engine is cold in order to accelerate warm-up, the valves causing the duct to be bypassed under normal operating conditions.