294results about How to "Small and compact" patented technology

An electronic device having mounted thereon an MEMS element or other functional elements, in which a device body and lid define an element-carrying space, the element-carrying space is sealed air-tight by an ultrasonic bonded part bonding the device body and the lid, and the element-carrying space having arranged inside it a system element secured to the device body and/or the lid by flip-chip connection.

Transaction cards having one or more folds therein for compact and easily stored fobs are provided. Moreover, foldable fobs are provided having one or more holes or apertures therein for holding key chains, or other devices for attaching the fobs to other items, such as sets of keys, wallets, or other items. Other embodiments include spring-loaded clips on the foldable fobs and protective sleeves, housings or cases for full-sized and smaller-sized cards. Still further, fob systems are provided comprising a case or housing for holding and/or storing foldable fobs therein, such as foldable fobs having a dimension, such as a length dimension or a width dimension, that is smaller than traditional-sized fobs.

Methods and apparatus are provided for connecting together two audio components that have different size connectors and/or a different configuration of electrical contacts between them. In one embodiment of the present invention, an audio adaptor is designed having an audio plug of one size to mate with a first electrical device, such as an integrated mediaphone such as the iPhone™, and an audio jack having a different size to mate with a second electrical device, such as a conventional cell phone headset having a single earpiece. In that instance, the plug would be a four-prong, 3.5 millimeter stereo device, while the jack would be a three-prong, 2.5 millimeter monaural device. The adaptor includes circuitry that takes one audio channel (i.e., the left or right channel), and couples it to the audio input on the monaural jack.

A hand held appliance, such as a hairdryer, includes a body, a fluid flow path extending through the body in an axial direction from a first fluid inlet through which a first fluid flow enters the appliance to a first fluid outlet for emitting the first fluid flow from the appliance, a primary fluid flow path extending from a second fluid inlet through which a primary fluid flow enters the appliance to a second fluid outlet, a section of the primary fluid flow path extending through the body in the axial direction and surrounding the fluid flow path, and a heater located within the section of the primary fluid flow path for heating fluid passing through the primary fluid flow path, and wherein the heater has a length extending in the axial direction.

Featured is a controller for a motor that is ultra-compact, with a power density of at least about 20 watts per cubic cm (W/cm³). The controller utilizes a common ground for power circuitry, which energizes the windings of the motor, and the signal circuitry, which controls this energization responsive to signals from one or more sensors. Also, the ground is held at a stable potential without galvanic isolation. The circuits, their components and connectors are sized and located to minimize their inductance and heat is dissipated by conduction to the controller's exterior such as by a thermally conductive and electrically insulating material (e.g., potable epoxy). The controller uses a single current sensor for plural windings and preferably a single heat sensor within the controller. The body of the controller can also function as the sole plug connector.

The various embodiments of the method of the present invention include a method to improving or expanding the capacity of a sleep analysis unit or laboratory, a method sleep analysis testing a patient admitted for diagnosis or treatment of another primary medical condition while being treated or diagnosed for that condition, a method of sleep analysis testing a patient that cannot be easily moved or treated in a sleep analysis unit or laboratory and other like methods.

A galvanically isolated signal conditioning system includes a signal conditioning circuit on an integrated circuit chip; a flying capacitor; and a galvanically isolating MEMS switching device on an integrated circuit chip for selectively switching the flying capacitor from across a pair of input terminals in one state to across the input terminals of the signal conditioning circuit in another state.

Illumination devices include a light source including a substantially planar light-emitting surface and an optical rod or optical taper disposed proximate to the substantially planar light-emitting surface to optically couple the optical rod and the substantially planar light-emitting surface.

A variable speed drive with a converter that is controllable to precharge a DC link is provided. The variable speed drive also includes an inverter. The converter converts a fixed line frequency, fixed line voltage AC power from an AC power source into DC power. The DC link filters the DC power from the converter. Finally, the inverter is connected in parallel with the DC link and converts the DC power from the DC link into a variable frequency, variable voltage AC power. The converter includes a plurality of pairs of power switches, wherein each pair of power switches includes a reverse blocking power switch arrangement connected in anti-parallel to another reverse blocking power switch arrangement. Alternatively, each pair of power switches includes a reverse blocking power switch connected in anti-parallel with a silicon carbide controlled rectifier.

An exercise apparatus for generating electrical power is disclosed comprising a rotor comprising a flywheel comprising a plurality of alternatingly poled magnets arranged radially towards a circumference of the wheel in a circumferential, circular or arc-like configuration and a stator comprising a disc or annulus comprising one or more radially arranged coil units arranged to have a circumferential, circular or arc-like configuration, wherein the stator comprises a printed coil laminate comprising a sheet of insulator material and a printed conductor comprising conductive ink printed upon the sheet of insulator material, wherein the printed conductor is arranged to form a coil unit. The flywheel rotates, in use, relative to the disc to cause the magnets to move relative to the coil unit(s) and generate electrical power in the stator.

A CMOS processing compatible germanium on silicon integrated waveguide photodiode. Positioning contacts in predicted low optical field regions, establishing side trenches in the silicon layer along the length of the photodiode reduces optical losses. Novel taper dimensions are selected based on the desirability of expected operational modes, reducing optical losses when light is injected from the silicon layer to the germanium layer. Reduced vertical mismatch systems have improved coupling between waveguide and photodiode. Light is coupled into and/or out of a novel silicon ring resonator and integrated waveguide photodiode system with reduced optical losses by careful design of the geometry of the optical path. An integrated waveguide photodiode with a reflector enables transmitted light to reflect back through the integrated waveguide photodiode, improving sensitivity. Careful selection of the dimensions of a novel integrated waveguide microdisk photodiode system results in reduced scattering. Improved sensitivity integrated waveguide photodiodes comprise integrated heaters.

An industrial X-ray tube formed by accommodating a cathode and anode in a container having an evacuated interior, in which electrons emitted from the cathode are caused to strike the anode and X-rays are emitted from the anode. The cathode is formed from graphite. The graphite is a layered crystal obtained by layering a plurality of carbon hexagonal planes. The graphite is cut based on crystal axes of the carbon hexagonal planes. The resulting cut surface is caused to function as an electron-emitting surface. For example, directions of an a- and b-crystal axis may be set so as to be arbitrary between each of the layers of the carbon hexagonal planes, the graphite may be cut along a surface parallel to the c-axis, and the resulting cut surface may be caused to function as an electron-emitting surface. The graphite may also be cut along a surface orthogonal to the c-axis.

An absorption spectroscopy apparatus having a fluid inlet and a fluid outlet. The apparatus includes a sample cell including an axis, a side wall having at least one curved reflective surface arrayed about the axis and facing inwardly with respect to the cell such that a beam of energy directed against a predetermined location on the reflective surface is reflected back and forth off the reflective surface and remains in substantially the same plane while inside the cell, and at least one port in the sidewall. The apparatus also includes at least one source/detector reflector having a curved profile in a plane extending perpendicular to the axis of the cell. The reflector is positioned with respect to the port of the cell to reflect energy through the port of the cell and against the predetermined location on the reflective surface of the side wall of the cell.

The present invention provides a high voltage, step-up, high current DC pulse type transformer with increased coupling coefficient between the primary and secondary windings through close proximity of the primary winding turns and secondary winding turns by means of transformer construction that provides a plurality of winding bays for a high voltage secondary winding physically located in close proximity to the primary winding. The plurality of winding bays for the secondary winding are provided by means of a frame and separate thin insulation layer where the thin insulation layer provides the barrel for all or part of the secondary winding. The invention significantly increases the transformer's coupling coefficient in high voltage step-up transformer applications where the transformer's core is pushed beyond saturation due to the high peak current typically found in capacitive discharge type circuits such as those used in electric fence controllers, strobe circuits, and high performance ignition systems for automobile, marine, or motorcycle engines.

A semiconductor device includes first and second assembled bodies (12A, 12B). The first assembled body is provided with a first semiconductor chip, a high voltage bus bar (21) connected to one surface of the first semiconductor chip, a first metal wiring board (24-1) connected to the other surface of the first semiconductor chip with a bonding wire, and a third metal wiring board (24-3) connected to the first metal wiring board. The second assembled body is provided with a second semiconductor chip, a low voltage bus bar (23) connected to one surface of the second semiconductor chip with a bonding wire, a second metal wiring board (24-2) connected to the other surface of the second semiconductor chip, and a fourth metal wiring board (24-4) connected by being returned from an end portion of the second metal wiring board and arranged in parallel to the second metal wiring board. The first assembled body and the second assembled body are arranged in a stacked structure wherein the assembled bodies are being separated. Inductance of a main circuit is reduced by the semiconductor module structure.

The invention discloses an all-solid-state Marx generator with a saturable pulse transformer substituting for a gas switch. The all-solid-state Marx generator is used for solving the problems that existing Marx generators are high in charging voltage, non-synchronous in capacitor charging, short in gas switch life or high in magnetic switch saturable inductance, series are hard to increase and the like. The all-solid-state Marx generator is composed of the saturable pulse transformer SPT, Q-grade Marx capacitor and grounding inductor units and a load, the SPT is in an axial symmetric structure, Q-group secondary windings of the SPT serve as a magnetic switch, Q-grade Marx capacitor and grounding inductor units are evenly distributed on the outer circumference of the SPT and are connected with Q-group secondary windings. Each grade of the Q-grade Marx capacitor and grounding inductor units is composed of a Marx capacitor and a grounding inductor. The all-solid-state Marx generator has the advantages of being low in input charging voltage, short in series connection, synchronization and built-up time of the switch, high and repetitive in operation frequency, solid and long in service life, a magnetic core can be reset automatically, and all grades of capacitors are charged uniformly.

The invention discloses an electric control unit of a vehicle electronic parking brake system, which comprises a microcontroller, a power supply conversion module, a reset circuit module, a clock circuit module, an input channel module and a brake motor driving module. The microcontroller receives a single which is transmitted from the input channel module, a control signal is generated after a certain control strategy calculation and sent to the brake motor driving module which simultaneously provides the current feedback to the microcontroller when in control of positive and reverse rotation of a motor, thereby forming a closed loop control system. The system replaces a conventional mechanical lever and a tire steel cable, thereby improving the comfort and the convenience of the driving and the manipulation, and leaving more spaces for installing decorative parts and convenient facilities; meanwhile, if a service braking system is failed, the electric control unit can still play the function of emergent brake, thereby providing an automobile safety guarantee.

The invention relates to a battery cooling method and a battery cooling device, in particular to liquid-nitrogen cooling method and device for an automotive power battery pack. The liquid-nitrogen cooling method for the automotive power battery pack includes directly releasing liquid nitrogen to the surface of the power battery pack and a casing of each battery cell to convert the liquid nitrogen into gas nitrogen, and cooling the surface of the power battery pack and the casing of each battery cell by absorbing a substantial amount of heat in process of converting the liquid nitrogen from liquid into gas. The liquid-nitrogen cooling device for the automotive power battery pack comprises a liquid nitrogen tank (1), a cooling container (8), a connecting pipeline (19), a cooling passage (20), a nitrogen exhaust port (9) and the like. The liquid nitrogen tank (1) is communicated with the cooling passage (20) arranged in the cooling container (8) through the connecting pipeline (19). The liquid-nitrogen cooling method and device for the automotive power battery pack are good in cooling effect, free of consumption of electric energy of the power battery pack, environment-friendly and energy-saving. The cooling method is simple and easy to implement. The cooling device is small in size, the structure is simple and stable, noise and vibration can be avoided, cooling stability is good, and safety is high.