In master-slave current-tracking load-share systems using switching power supplies, a method and apparatus for preventing current recirculation at light-load and no-load operational conditions. The slave power supply is run in a discontinuous mode when load current falls to light-load or no-load state, preventing the slave from sinking current, therefore preventing recirculation from the master to the slave. The slave power supply is run at a lower current level than the master, preventing recir...

A reconfigurable ADC includes a plurality of reconfigurable blocks for allowing the ADC to provide a plurality of architectures. In one embodiment, the ADC can be configured to operate in a pipeline mode and a sigma-delta mode. This arrangement provides an ADC having a relatively large range of bandwidth and resolution.

A method for providing dynamic element matching of capacitors in a pipelined analog to digital converter (ADC). Instead of randomizing the output of a flash ADC before providing the output of the ADC to the capacitor array, the threshold voltages from a reference ladder are randomized. This eliminates multiple, series connected switches of a randomizer between the output of a comparator bank and the capacitor array, and may be done during the time the output of the comparator bank of the flash A...

A man-portable wearable antenna system to be worn by a wearer. The wearable antenna system comprises a helmet antenna, a vest antenna worn around the torso, a body antenna worn along the entire body, and a means for routing signals between one of the antennas and a communication device.

A cable-stripping tool includes two parts that can be moved linearly in relation to each other, each of the parts including an opening which can accommodate a cable when the openings are in mutual alignment. The first part carries a cutting blade and has a support arrangement with a ring that, when rotated about an axis, adjusts a cutting depth of the blade. A spring element functions to bias the parts in a direction away from each other, while enabling the two tool parts to be brought together ...

A compressor, in particular for air conditioning systems in motor vehicles, having a housing, a housing sealing cover, a drive shaft with bearings and a drive device for pistons that are displaced back and forth. The drive device transfers the rotational displacement of the drive shaft into the back-and-forth displacement of the pistons. The compressor also includes a cylinder block, in which the pistons that are displaced back and forth take in and compress coolant, a valve device, in addition ...

A method of operating a powder paint applicator provides a pump in fluid communication with an outlet of a powder paint color changer having a plurality of inlets in respective fluid communication with a plurality of powder paint sources. A flow of conveying fluid through the pump provides a suction force through the color changer for drawing a particular powder paint from one of the plurality of sources through the color changer and into the pump for further conveyance to a powder paint applica...

A digital potentiometer is disclosed that includes first, second, and third signal terminals. A chain of series-connected impedance elements with multiple tap points is connected between the first and second signal terminals. A plurality of first switching devices are each connected to a respective one of the multiple tap points and to an internal wiper node. A configurable output stage is connected between the internal wiper node and the third signal terminal. The configurable output stage incl...

Devices for performing analog-to-digital conversion with reduced noise. In one implementation, an analog-to-digital converter includes at least one internal digital-to-analog converter (DAC) that comprises a plurality of analog components and converts an intermediate digital signal into an associated intermediate analog signal, a dynamic element matching (DEM) circuit coupled to the DAC to permute configurations of the analog components within the DAC, a noise cancellation circuit and a digital ...

An adjustable reflector system for fixed dipole antenna comprising of reflector and several supporting devices is described. The beam direction of the antenna can be changed by rotating the reflector about the Y-axis and/or adjusting the reflector about X axis and Z-axis. Such adjustments allow the user to fine tune the antenna to meet new or unforeseen coverage issues. The plurality of the of the reflector's shapes is disclosed (flat, curved, etc.).