Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

81results about How to "Extend switching time" patented technology

Picture element using microelectromechanical switch

A robust microelectromechanical switch. In an illustrative embodiment, the switch is adapted for use in a display and includes a first flexible surface and a second surface. The second surface is angled relative to the first surface, forming a wedge the first surface and the second surface. A first terminal and a second terminal are positioned relative to the first flexible surface and the second surface so that selective flexing of the flexible surface electrically couples or uncouples the first terminal to the second terminal. In a more specific embodiment, the switch further includes a first mechanism for selectively applying an electrostatic force between the first flexible surface and the second surface. The first surface is positioned on a first elastic flexible layer, and the second surface is positioned on a second layer. The first mechanism includes a first actuator electrode that is coupled to the first surface, and a second actuator electrode that is coupled to the second surface. A sufficient charge differential applied between the first actuator electrode and the second actuator electrode will attract the first electrode to the second electrode, thereby flexing the flexible layer toward the second layer. The sidewalls define a perimeter of a cell that houses the switch. A protrusion extends from a third layer between the sidewalls, thereby indenting the first layer, and thereby forming the wedge.
Owner:SEERTECH CORP

Switching power supply

The switching element is turned ON and OFF according to when the current flowing through the inductance element becomes equal to zero and according to an amplified error voltage between the output voltage and a target output voltage. More particularly, the OFF time of the switching element is calculated, and when the OFF time is less than a prescribed value, the ON time of the switching element is increased. Moreover, the amount by which the ON time of the switching element is increased is reduced if the error voltage if greater than a prescribed value.
Owner:FUJI ELECTRIC CO LTD

Two-stage dual-dehumidification-evaporator and dual-dehumidification-condenser dehumidification heat pump system and method

The invention provides a two-stage dual-dehumidification-evaporator and dual-dehumidification-condenser dehumidification heat pump system which comprises a closed refrigerating fluid system. The closed refrigerating fluid system comprises a low-temperature-side compressor, a four-way reversing valve, a first low-temperature-side dehumidification heat exchanger, a second low-temperature-side dehumidification heat exchanger, a low-temperature-side throttle device, a high-temperature-side compressor, a first three-way reversing valve, a second three-way reversing valve a high-temperature-side throttle device, a first high-temperature-side dehumidification heat exchanger and a second high-temperature-side dehumidification heat exchanger. The invention further provides a two-stage dual-humidification temperature increase and decrease method. In the system and the method, the two dehumidification evaporators/condensers connected in parallel at different evaporation/condensation temperatures are adopted, and treatment air sequentially flows through the high-temperature dehumidification evaporator and the low-temperature dehumidification evaporator. Compared with the prior art, according to the system and the method, the circulating switching time is prolonged, reliability and economic performance are both improved to a certain degree, and in addition, multi-mode operating can be achieved through switching.
Owner:SHANGHAI JIAO TONG UNIV

Method of making adaptive negative differential resistance device

A method of controlling a negative differential resistance (NDR) element is disclosed, which includes altering various NDR characteristics during operation to effectuate different NDR modes. By changing biasing conditions applied to the NDR element (such as a silicon based NDR FET) a peak-to-valley ratio (PVR) (or some other characteristic) can be modified dynamically to accommodate a desired operational change in a circuit that uses the NDR element. In a memory or logic application, for example, a valley current can be reduced during quiescent periods to reduce operating power. Thus an adaptive NDR element can be utilized advantageously within a conventional semiconductor circuit.
Owner:SYNOPSYS INC

Half-decoupling type graded dehumidifying and cooling dehumidifying heat pump system and method

The invention provides a half-decoupling type graded dehumidifying and cooling dehumidifying heat pump system comprising a refrigerant system and an air system. The refrigerant system comprises two compressors and four dehumidification heat exchangers, two four-way reversing valves, an evaporator, two throttling devices and two three-way reversing valves. The air system comprises two draught fans,eight air valves and two air openings. According to the half-decoupling type graded dehumidifying and cooling dehumidifying heat pump system, the dehumidification heat exchangers at different operation pressures are connected in parallel, the evaporation side at the low pressure grade is connected with a dehumidification evaporator and the evaporator in series. A high-pressure dehumidification evaporator adopts a drying agent with a uniform adsorption speed to achieve heat and humidity load pretreatment, condensation of the high-pressure dehumidification evaporator is prevented through a highevaporator temperature, and meanwhile the dew point of air entering the low-pressure dehumidification evaporator is lowered; the low-pressure dehumidification evaporator adopts a drying agent with high adsorption capacity to achieve heat and humidity load efficient treatment, and the switch time of circulations is prolonged. The evaporator connected with the low-pressure side in series can solvethe problem that the heat and humidity load processing capacities of the system are inconsistent.
Owner:SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products