Patent application number | Description | Published |
20110280415 | SOUND REPRODUCTION AND DETECTION - Apparatus for generating a first acoustic signal and simultaneously sensing a second acoustic signal. The apparatus comprises: an input ( | 11-17-2011 |
20110305346 | Adaptive Audio Output - Devices, apparatus, methods, circuits and processors are implemented for control of audio signals. Consistent with one such apparatus, a processor circuit is configured and arranged to determine, for a perceived loudness algorithm that outputs audio signal levels, a common point corresponding to a particular background noise level at which the levels of the audio signal levels are independent of a volume setting that corresponds to desired perceived loudness, and to determine an audio signal level from the perceived loudness algorithm in response to a background noise signal, a volume setting signal, and the common point. An audio signal level output circuit is configured and arranged to provide an audio signal at the determined audio signal level. | 12-15-2011 |
20160050497 | VOICE COIL MOTOR AND LOUDSPEAKER CONTROLLER - A voice coil motor controller configured to determine a voltage across and a current through a voice coil motor having an input signal supplied thereto and determine its impedance therefrom, the controller further configured to identify asymmetry in variations of said impedance over time to determine an asymmetry value, the controller further configured to provide for control of said voice coil motor using said asymmetry value. | 02-18-2016 |
Patent application number | Description | Published |
20090045907 | Microvaristor-Based Overvoltage Protection - The disclosure relates to an overvoltage protection means containing ZnO microvaristor particles for protecting electrical elements and a method to produce the means. Single microvaristor particles are placed in an arrangement having a monolayer thickness and are electrically coupled to the electrical element to protect it against overvoltages. Embodiments, among other things, relate to: 1-dimensional or 2-dimensional arrangements of microvaristor particles; placement of single microvaristors on a carrier; the carrier being planar or string-like, being structured, being a sticky tape, having fixation means for fixing the microvaristors, or having electrical coupling means. The monolayered overvoltage protection means allows very tight integration and high flexibility in shaping and adapting it to the electric or electronic element. Furthermore, reduced capacitance and hence reaction times of overvoltage protection are achieved. | 02-19-2009 |
20090200521 | MICROVARISTOR-BASED OVERVOLTAGE PROTECTION - A method is disclosed for producing a non-linear powder having microvaristor particles which have a non-linear current-voltage characteristic. The production steps includes mixing non-metallic particles with the microvaristor particles, thermally treating the non-metallic particles for decomposing them into electrically conductive particles and fusing the electrically conductive particles onto the microvaristor particles. Embodiments, among other things, relate to: breaking up agglomerates of the non-metallic particles during mixing; keeping the decomposition temperature below a sintering or calcination temperature of the microvaristor particles; and choosing micron-sized or nano-sized non-conductive particles for microvaristor decoration. The production method produces varistor powder with improved reproducibility of the non-linear electric current-voltage characterstic and with reduced switching fields (E | 08-13-2009 |
20120293964 | POWER ELECTRONIC MODULE WITH NON-LINEAR RESISTIVE FIELD GRADING AND METHOD FOR ITS MANUFACTURING - Exemplary embodiments are directed to a power electronic device with an electronic device including a substrate, a metal layer formed on the substrate and a field grading means located along an edge of the metal layer. The field grading means has a non-linear electrical resistivity. | 11-22-2012 |
20130057083 | HIGH-VOLTAGE SWITCHING DEVICE - A high voltage switching device includes a current interruption assembly having at least one vacuum chamber, a fixed contact assembly having a first fixed contact and a second fixed contact positioned inside the vacuum chamber, and first and second movable-contact assemblies including a first movable contact and a second movable contact, respectively. A single mechanism actuates the first and second movable-contact assemblies between a first position and second position. In the first position, the first and second movable contacts are electrically coupled with the first and second fixed contacts, respectively. And in the second position, the first and second moveable contacts are electrically separated the same. The first movable contact and the second movable contact move, along a reference axis, one towards the other or away from the other based on the actuating mechanism. | 03-07-2013 |
20130078836 | High Voltage Direct Current Cable Termination Apparatus - A direct current cable termination apparatus for terminating a high voltage direct current cable. The apparatus includes a current-carrying device including a terminal portion of the direct current cable, the cable including an electrical conductor, an electrically insulating layer located outside of the electrical conductor, and a conductive shield located outside of the insulating layer and the electrical conductor; and a housing including a tubular outer shell with an inner periphery and formed by an electrically insulating and polymer-containing material. The current-carrying device is adapted to extend in the axial direction of the outer shell. Along at least a part of the axial extension of the current-carrying device the outer shell extends axially with a space between its inner periphery and the current-carrying device. | 03-28-2013 |
20130113598 | TRANSFORMER WITH SHIELDING RINGS IN WINDINGS - A coil and electric shielding arrangement for a dry-type transformer includes an electric shielding device arranged at a distance from a winding, at an axial end of the winding perpendicular to a longitudinal axis of the transformer, and parallel to a top surface of a coil that is wound around the axis such that the electric shielding device covers a cross-sectional area of the winding perpendicular to the longitudinal axis. An insulation material attached to the winding and to the electric shielding device establishes a first distance between the winding and the electric shielding device along the longitudinal axis such that the winding is shielded against another electric field. The winding and the electric shielding device are casted in a block which insulates the electric shielding device from the electric field of the winding by establishing a second distance between the winding and the electric shielding device. | 05-09-2013 |
Patent application number | Description | Published |
20100305257 | THERMOPLASTIC POLYMER COMPOSITIONS COMPRISING HIGH-FLUIDITY POLYAMIDES - Thermoplastic polymer compositions contain high-fluidity polyamides and have an excellent compromise in terms of properties, in particular mechanical properties and a high fluidity in the molten state; such compositions contain at least one high-fluidity polyamide and a high filler content, such as glass fibers. | 12-02-2010 |
20110020594 | FIBER-FILLED POLYAMIDE COMPOSITIONS AND MOLDED ARTICLES SHAPED THEREFROM - Polyamide compositions filled with fibers have good mechanical and rheological properties, the polyamide having a high fluidity in molten phase and the fibers, in particular glass fibers, being well aligned at both the surface and the core of shaped articles injection molded from such compositions. | 01-27-2011 |
20110275760 | MODIFIED POLYAMIDES HAVING ENHANCED MELT FLOW INDICES - Novel modified polyamides are prepared by polymerization of diacid and diamine monomers in the presence of certain multifunctional and, optionally, monofunctional compounds; such novel polyamides are formulated into molding compositions which can be converted into useful shaped articles. | 11-10-2011 |
20120065282 | METHOD FOR PREPARING POLYAMIDE FOAM AND FOAM CAPABLE OF BEING PRODUCED BY SAID METHOD - A method for preparing polyamide foam is described. Polyamide foam produced according to the method is also described. A method including heating a composition including at least one polyamide and at least one polyurethane, and stabilizing the resulting cellular structure is also described. Use of a composition including at least one polyamide and at least one polyurethane for preparing polyamide foam is also described. | 03-15-2012 |
20150051335 | FLUIDIZING AGENT AND METHOD USING SAID AGENT - The present invention relates to the use of a specific compound as a fluidizing agent or as a fluidizing agent precursor in the molten state for a composition including a thermoplastic polymer, in particular a polyamide. The invention further relates to a method for preparing a polyamide article in which the viscosity, in the molten state, of a composition including the polyamide is decreased. The fluidizing agent can further enable the production of an article which has an unreduced density and/or in which the mean molar mass of the polymers of the composition is increased. | 02-19-2015 |
20150158989 | METHOD FOR CHEMICAL FOAMING IN THE PRESENCE OF REINFORCING FILLERS - The present invention relates to a method for preparing a foamed item, including the following steps: a) heating a composition including, or consisting of, at least one polyamide PA, at least one compound U including at least one urethane function, particularly a polyurethane PU, at least one reinforcing filler, the content of which is no lower than 10 wt % of the total weight of the composition, and temperature T such that: the compound U directly or indirectly generates CO | 06-11-2015 |
20150197602 | MODIFIED POLYAMIDES HAVING ENHANCED MELT FLOW INDICES - Modified polyamides are prepared by polymerization of diacid and diamine monomers in the presence of a multifunctional compound having either at least three acid functions or at least three basic functions and, optionally, a monofunctional compound having either an acid function or a basic function. These polyamides can be formulated into molding compositions which can be converted into useful shaped articles. | 07-16-2015 |