143results about How to "Small component size" patented technology

An efficient and flexible current-mode driver delivers power to one or more light sources in a backlight system. In one application, the current-mode driver is configured as an inverter with an input current regulator, a non-resonant polarity-switching network, and a closely-coupled output transformer. The input current regulator can output a regulated current source in a variety of programmable wave shapes. The current-mode driver may further include a rectifier circuit and a second polarity-switching network between the closely-coupled output transformer and a lamp load. In another application, the current-mode driver delivers power to a plurality of light sources in substantially one polarity by providing a regulated current to a network of time-sharing semiconductor switches coupled in series with different light sources coupled across each semiconductor switch.

Synthetic circuit elements and amplifier applications for synthetic circuit elements are provided. The synthetic circuit elements disclosed herein may be configured to compensate for some or all of the parasitic capacitance normally associated with circuit elements disposed on a substrate providing a selectable impedance characteristic. Amplifier circuit constructed using such synthetic circuit elements exhibit improved performance characteristics such as improved recovery time, frequency response, and time domain response.

An efficient and flexible current-mode driver delivers power to one or more light sources in a backlight system. In one application, the current-mode driver is configured as an inverter with an input current regulator, a non-resonant polarity-switching network, and a closely-coupled output transformer. The input current regulator can output a regulated current source in a variety of programmable wave shapes. The current-mode driver may further include a rectifier circuit and a second polarity-switching network between the closely-coupled output transformer and a lamp load. In another application, the current-mode driver delivers power to a plurality of light sources in substantially one polarity by providing a regulated current to a network of time-sharing semiconductor switches coupled in series with different light sources coupled across each semiconductor switch.

An electric supply system comprising two or more phases (R2, S2, T2), one rectifier (101, 103, 105) for each phase, the second primary terminals of said rectifiers (101, 103, 105) being interconnected, also comprises an Artificial Neutral Point (ANP) creating means (A2) for creating an artificial neutral point (NA2) in the electric supply system, connected in parallel with said rectifiers. The ANP means (A2) short-circuits the zero sequence voltage component of the system but does not affect the positive and negative sequence components. The ANP means (A2) includes magnetic components of such a kind that the vector sum of the phase voltages is zero. According to a first embodiment, the ANP means (A2) comprises one transformer (113, 115, 117) for each phase, the primary winding of each transformer connected to the respective phase (R2, S2, T2) in a star configuration, the secondary windings serially connected and the interconnection point of the primary windings forming an artificial neutral point.

The invention relates to an acoustically coupled thin-film BAW filter, comprising a piezoelectric layer, an input-port on the piezoelectric layer changing electrical signal into an acoustic wave (SAW, BAW), and an output-port on the piezoelectric layer changing acoustic signal into electrical signal. In accordance with the invention the ports include electrodes positioned close to each other, and the filter is designed to operate in first order thickness-extensional TE1 mode.

The invention relates to a structure seismic sensitivity optimization method based on story drift angle constraint. The method includes the steps that 1, lateral load resisting members are set into multiple optimization groups; 2, modal analysis is conducted, the number of modes of vibration needing to be considered is determined and analyzed, and all orders of modal amplitude are calculated; 3, response spectrum analysis is conducted, and a maximum story drift angle and a modal story drift angle on the same layer are obtained; 4, virtual unit horizontal force is applied to all floors and defined as a working condition 1 to a working condition M (M is the sum of the floors), and virtual unit torque is applied to the layer where the story drift angle is maximum and defined as a working condition M+1; 5, the sensitivity coefficients of the sizes or material cost of all the members to the maximum story drift angle are calculated; 6, all the optimization groups are subjected to size weighted averaging, and the sensitivity coefficients of all the optimization groups to the maximum story drift angle are obtained; 7, the sizes of all the members in the optimization groups with the large sensitivity coefficients are increased, and the sizes of all the members with the small sensitivity coefficients are reduced. Compared with the prior art, the method has the advantages of reducing cost and the like.

Semiconductor integrated circuits (110) or assemblies are disposed at least partially in cavities between two interposers (120). Conductive vias (204M) pass through at least one of the interposers or at least through the interposer's substrate, and reach a semiconductor integrated circuit or an assembly. Other conductive vias (204M.1) pass at least partially through multiple interposers and are connected to conductive vias that reach, or are capacitively coupled to, a semiconductor IC or an assembly. Other features are also provided.

In a coordinate indicator used for an input device of electronic equipment, to miniaturize the entire indicator as well as to secure resistance to impact and reliability by reducing components in size. A coordinate indicator includes a casing composed of an upper case, a substrate holder, a ceramic pipe, and an edge case; a center core, a ferrite core A moving together with the center core during operation, and a ferrite core B fixed to oppose the ferrite core A, which are accommodated within the casing. Around a tube accommodating part of the ferrite core A and the entire ferrite core B therein, a coated conducting wire is wound so as to form a coil.