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JP3546891B2 |
PURPOSE: To provide the title choke coil in the outer diameter of winding parts smaller than that of gear type choke coil as well as in smaller sharing area in a substrate packaging step. CONSTITUTION: Within the title choke coil and noi...
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JP2004207700A |
To easily form a coil having a tap and to improve workability.A conductor 2 having respectively rectangular shapes and a plurality of plate parts connected each other on one top of the rectangular shapes is formed. Two coils are formed b...
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JP2004207491A |
To provide a pulse transformer capable of reducing the variety of the output of an inverter circuit or a lamp current by products.The pulse transformer 100 with a bobbin structure without any partitioning is employed as an inverter trans...
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JP3545245B2 |
To reduce an increase in the attenuation of a common mode current a loss in a differential mode current by providing the inductor mutual induction effect of a magnetic material to a common mode filter. In this filter, a pair of upper and...
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JP3545701B2 |
To obtain a laminated transformer that realizes a high coupling coefficient, even if the transformer is small in size. This laminated transformer is constituted with a nonmagnetic layer being sandwiched between a pair of inter-magnetic l...
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JP3546001B2 |
To provide an electronic part which shows a high wavelength shortening effect, an excellent high frequency characteristic, is small-sized and shows a high performance and excellent overall electronic properties by combining a plurality o...
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JP2004521517A |
The invention relates to a transformer ( 10, 10' ) with a core ( 11 ) which has a center piece ( 11 a) with a first and a second flange ( 11 b, 11 c), in which a first and a second winding ( 12, 13 ) of the transformer ( 10, 10' ) are wo...
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JP2004200544A |
To provide a stacked transformer which can reduce fluctuations in characteristics of each coil and strengthen magnetic coupling.This stacked transformer forms a plurality of coils wound in a spiral state around a common winding axis as t...
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JP2004201333A |
To provide an electronic component, particularly a balun transformer whose dielectric constant is higher than that of existing materials, strength is not deteriorated, size is small, performance is high and overall electrical characteris...
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JP2004193010A |
To provide a twisted pair wire connection structure with high reliability prevented from a disorder caused by intrusion of moisture and not necessary to process, and to provide a cheap near magnetic field non-contact communication device...
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JP2004193153A |
To provide a transformer for high-frequency signals which is capable of dealing with high-frequency signals of two or more different wavelengths at the same time without starting intermodulation.The high-frequency signal transformer is e...
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JP2004179307A |
To eliminate dispersion of inductance due to variance between windings when two multilayer board-based transformers equal to each other in configuration are connected in series.A winding board 3 has a constitution in which two winding bo...
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JP2004172284A |
To provide a planar balloon transformer having a desired impedance ratio without complicating a working technique.The balloon transformer includes first and second ground potential layers 20, 40 formed on a silicon substrate 10, an unbal...
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JP2004516648A |
The present invention relates to a high voltage transformer (e.g. for CRT display units) with an over voltage protection (OVP), comprising a primary, low voltage winding, a secondary, high voltage winding, and an over protection circuit,...
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JP2004514282A |
A ferrite core, such as for transformers, has a middle bleb with an oval cross-section or flattened oval cross-section, whereby the longitudinal axis of the middle bleb is oriented parallel to the attachment plane of the transformer and ...
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JP3518997B2 |
To provide a power conversion device which precisely calculates the magnetic flux of the iron core of a transformer and can suppress the DC- biased magnetization of the transformer, even when the multiplex transformer having a common mag...
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JP3509836B2 |
To make signal transfer smooth by making a primary input coil and a secondary excitation coil face each other on a ground side coil surface, and making the secondary excitation coil and a secondary output coil, respectively, face each ot...
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JP2004080908A |
To provide a pulse power supply device, wherein a voltage with a steep leading edge is obtained by a pulse transformer of superior coupling between primary winding and secondary winding and is low in leakage inductance, and the winding w...
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JP2004072115A |
To provide a balun structure which supplies a ballance revers-phase output over the range of super-wideband frequency and whose occupied space is small.The coupled trasmitting line balun structure employs two pairs of alternately-positio...
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JP3496125B2 |
PURPOSE: To manufacture a high performance winding chip transformer having novel functions. CONSTITUTION: This winding chip transformer is provided with lead terminals 5, 5', an U type core 2, primary and secondary windings 3a, 3b, I typ...
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JP3493858B2 |
To manufacture a compact and thin laminated transformer capable of setting up the turn numbers not to exceed the decimal point. The secondary winding pattern 15B is formed on the second both surface substrate 13B comprising a laminated t...
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JP3493846B2 |
To enable setting the number of turns of a laminated transformer less than a decimal point, and miniaturize and thin the transformer. A secondary winding pattern 14B is formed on a second double- sided substrate 13B for constituting a la...
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JP3493857B2 |
To manufacture a compact and thin laminated transformer capable of setting up the turn number not to exceed the decimal point. The secondary winding pattern 17B is formed on the second both surface substrate 16B comprising a laminated tr...
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JP3488868B2 |
To arrange a winding so that loss may be minimized in a limited space. This flat coil is provided with a disc-like insulation layer 10 and a winding 11 of N turn (N: integer of 2 or more) that a plate-like conductor is arranged spirally ...
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JP3488869B2 |
To provide a planar coil, capable of reducing in thickness and having a winding of odd turns and high flexibility in designing the number of conductor layers and a small loss and a planar transformer. The planar coil comprises an insulat...
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JP3487461B2 |
PURPOSE: To obtain large mutual inductance with less self-resonance frequency drop. CONSTITUTION: On the surface of a semiconductor substrate 11A, the first flat coil 12A, etc., are formed with pattern wiring of an arbitrary conductor, a...
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JP2004006809A |
To provide Mn-Zn-based ferrite reduced in the distortion of an output waveform to an input wave and excellent THD characteristics in a wide temperature range, a ferrite magnetic core, and an electronic component for communication equipme...
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JP3475366B2 |
PURPOSE: To miniaturize a choke coil and a noise filter. CONSTITUTION: A rectangular core 1, which has a center magnetic leg 1a that has square cross-section at the center of a square outer fame, a winding frame 2 to fit to the center ma...
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JP3472329B2 |
PURPOSE: To obtain a chip type transformer, which has little irregularity in its characteristics even at a high frequency, is small-sized, can be manufactured at low cost and can be automatically packaged. CONSTITUTION: A chip type trans...
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JP2003332143A |
To make an inductive electronic constitution component assembled simply by an SMD technology by making various types of inductive components, and using them for making the inductive electronic component provided with a ferromagnetic core...
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JP2003329714A |
To provide a power detection circuit which suppresses a loss due to a resistance for current detection inserted in a line used to make mainly a current flow and whose power detection accuracy is high.As a detection method for a power con...
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JP2003534726A |
An apparatus for high frequency electrical line communication includes a transmitter, a receiver, a modem, and a coupler at each of two or more locations along an electrical line. The couplers have capacitive circuits serially connected ...
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JP3456388B2 |
To quickly judge abnormality with no time constant circuit while the number of parts is less for lower cost. A flyback pulse (FB pulse) taken out with a heater coil 12a is provided to a heater 14 through a heater resistor R11, while part...
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JP3434343B2 |
PURPOSE: To manufacture a choke coil having good external view in which the split winding is not wound randomly and the height is decreased as compared with a case employing a geared tubular bobbin while fully automating the assembling w...
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JP3430144B2 |
To provide an small transformer which is equipped with a cover and keeps a sufficient creeping distance between a terminal and a core, capable of lowering its height, even if it is required to widen a winding part or to narrow a pin pitc...
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JP3429863B2 |
PURPOSE: To miniaturize the title thin type transformer while cutting down the cost thereof by a method wherein the frame thickness of a terminal base is reduced by the stepped part of a lower side core half body furthermore, a flat coil...
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JP2003209413A |
To provide a miniaturized balun transformer which has an improved capability of removing noises having frequencies outside a frequency band to be used.A multilayer substrate incorporating first and second coils serially connected, a thir...
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JP2003198221A |
To exhibit a stabilized frequency characteristic and proper characteristics, while avoiding generation of resonance or the like caused by an unwanted mode.In the chip type laminated balun element, two or more sets of λ/4 coupled strip l...
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JP2003197430A |
To provide a thin and low-cost transformer that decreases heat generation due to copper loss in large-current conduction, reduces the number of components, and has high productivity.A plurality of circular or polygonal patterns 1 are for...
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JP2003197432A |
To provide a line transformer device wherein crosstalk is reduced, even if a clearance between adjacent line transformer bodies is reduced.In a line transformer device wherein a plurality of communication circuit connection parts and com...
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JP2003197433A |
To provide a transmission line transformer which enables surface mounting by winding a wire on a binocular core.In the transmission line transformer, a balanced-to-unbalanced transformer 42, whereon a wiring is wound to give the impedanc...
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JP3420490B2 |
To provide a noise limiter conversion equipment and manufacturing method of the same having a saturation area to suppress an entering noise as well as a noise in a communication system and an internal noise. This equipment has a conversi...
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JP2003168948A |
To provide a multilayer inductance/capacitance resonance balanced-to- unbalanced transformer.The transformer has a multilayer LC resonant cavity, and an equivalent circuit of the cavity has at least one vertical coupling line, one conduc...
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JP3414327B2 |
To obtain a compact laminated balun transformer in which inter-strip line electromagnetic connection can be easily adjusted. A laminated balun transformer 1 is constituted of a dielectric sheet 2b, whose surface is provided with a leadin...
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JP3411006B2 |
To provide a small transformer which is capable of coping with a lead-free solder and improving a lead wire tying operation and a lead wire tying method. Projection 6 are provided to the outer edge face of a flange 2 on which pin termina...
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JP2003151831A |
To solve the problem that a conventional balance transformer is increased in height when it is used in a low-frequency band because coil conductor patterns which are provided between insulating layers and smaller than one turn are connec...
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JP2003516706A |
There is provided by this invention an apparatus and method for generating voltage pulses to first and second magnetron devices in a plasma chamber. An isolation transformer is connected to a pulsed DC power supply having a flux sensor, ...
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JP2003133143A |
To provide a magnetic core for a transmission signal line transformer which does not saturate a magnetism in the case of input of a higher transmis sion signal and does not deflect the transmission signal.The magnetic core has the relati...
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JP3399242B2 |
To reduce an influence of cross regulation on non-controlled voltages, along with a small variation range of a switching circuit and a switching control circuit on a primary side of a transformer, by making a control voltage constant und...
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JP2003115413A |
To provide a transformer unit to which an output cable can be attached easily and surely with a small space.The output of this transformer unit is led out through the output cable 2 connected to an output terminal 1 of a transformer prot...
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