Patent application number | Description | Published |
20090154691 | Control circuit for controlling a DC supply voltage for a terminal - A control device for controlling a supply voltage which can be switched between a constant line current operation and a constant line voltage operation, wherein a line current, which consists of a direct current for supplying the terminal and of an alternating current for transmitting information, flows via a subscriber line of a terminal, comprising a sensing circuit for sensing an analogue input voltage dependent on the line current, a subtractor which, in the constant line current operation, subtracts an analogue feedback voltage dependent on an adjustable nominal direct-current value from the sensed input voltage for generating an analogue difference voltage, an analogue/digital converter for converting the generated analogue difference voltage into a digital difference voltage value, a digital low-pass filter for filtering a sequence of control error values out of the generated sequence of difference voltage values, a controller for generating a control value in dependence on the filtered-out sequence of control error values, and comprising a first digital/analogue converter which, in the constant line current operation, converts the control value in each case generated by the controller into the analogue direct voltage for supplying the terminal. | 06-18-2009 |
20110019315 | OVER-CURRENT PROTECTION FOR DC-TO-DC CONVERTERS - A DC-to-DC converter includes a switching control circuit adapted to provide a control signal having a duty cycle. A switching regulator is adapted to receive both a supply voltage having the first voltage level and the control signal. The switching regulator is further adapted to provide an output signal at the second voltage level as a function of both the supply voltage and the control signal. In addition, a current sensing circuit is adapted to provide at least one alarm signal based the duty cycle of the time-varying signal. Other systems and methods are also disclosed. | 01-27-2011 |
20120099724 | Device for Controlling a Supply Voltage for a Terminal - A control device includes a circuit operable to sense an analogue input voltage dependent on a line current flowing via a communication line of a terminal generate an analogue difference voltage in a constant line current operation based on a difference between the sensed analogue input voltage and an analogue feedback voltage which depends on an adjustable nominal direct-current value and filter a sequence of control error values from a sequence of digital difference voltage values converted from the generated analogue difference voltage. The circuit is further operable to convert a control value generated from the sequence of control error values in the constant line current operation to an analogue direct voltage for supplying the terminal and convert the nominal direct-current value into the analogue feedback voltage in the constant line current operation. | 04-26-2012 |
20120223694 | Operating a Semiconductor Component Having a Breakthrough Voltage - Methods and apparatuses are provided for operating a semiconductor component using a DC/DC-converter. The DC/DC-converter has its duty cycle controlled. | 09-06-2012 |
20120263202 | LASER DIODE CONTROL DEVICE - A laser control device comprises a driver circuitry for supplying a drive current to a laser diode (LD). The device further comprises a digital storage for storing drive current values for a plurality of temperature conditions, and a central processing unit coupled to the digital storage for controlling the driver circuitry in accordance with the drive current values from said digital storage. The central processing unit is configured for multiple updating the drive current values stored in the digital storage. | 10-18-2012 |
20150023529 | MEMS Devices, Interface Circuits, and Methods of Making Thereof - In accordance with an embodiment of the present invention, a micro-electro-mechanical system (MEMS) device includes a first plate, a second plate disposed over the first plate, and a first moveable plate disposed between the first plate and the second plate. The MEMS device further includes a second moveable plate disposed between the first moveable plate and the second plate. | 01-22-2015 |
Patent application number | Description | Published |
20090080811 | CHEMICAL, BIOLOGICAL, AND RADIOLOGICAL CONTAINMENT BAG - An isolation apparatus for transporting and storing objects or human remains. The apparatus is formed of a flexible, foldable, opaque, generally box-like enclosure fabricated of a fiber reinforced plastic film, and welded together to form a sealed, air-tight and/or liquid-tight enclosure. A gas and liquid sealing zipper is positioned along three of four sides of the enclosure, thereby allowing the apparatus to open in a clamshell or suitcase-like manner, for easy access to the interior of the enclosure. An NBC and/or a CBRN filter can be mounted to the apparatus to allow for release of pressure from within the enclosure. An interior liner made of chemical protective fabric can be placed within the enclosure for additional chemical containment. This apparatus eliminates or significantly reduces the size and number of cracks, crevices and/or other voids into which contaminated materials can enter, for example by positioning, sizing and/or structuring welds to extend completely to an edge of the isolation apparatus, and/or by welding materials together entirely around one or more peripheries. | 03-26-2009 |
20150067999 | CHEMICAL, BIOLOGICAL, AND RADIOLOGICAL CONTAINMENT BAG - An isolation apparatus for transporting and storing objects or human remains. The apparatus is formed of a flexible, foldable, opaque, generally box-like enclosure fabricated of a fiber reinforced plastic film, and welded together to form a sealed, air-tight and/or liquid-tight enclosure. A gas and liquid sealing zipper is positioned along three of four sides of the enclosure, thereby allowing the apparatus to open in a clamshell or suitcase-like manner, for easy access to the interior of the enclosure. An NBC and/or a CBRN filter can be mounted to the apparatus to allow for release of pressure from within the enclosure. An interior liner made of chemical protective fabric can be placed within the enclosure for additional chemical containment. This apparatus eliminates or significantly reduces the size and number of cracks, crevices and/or other voids into which contaminated materials can enter, for example by positioning, sizing and/or structuring welds to extend completely to an edge of the isolation apparatus, and/or by welding materials together entirely around one or more peripheries. | 03-12-2015 |