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JP2002175922A |
To realize a thin high-frequency transformer, which is capable of withstanding a large current by laminating a required number of disc coils formed of metal plate conductor and insulating sheets into a coil with a required number of turn...
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JP2002170715A |
To provide a magnetic biased inductance element with Sr ferrite capable of being sintered at a comparatively low temperature and its manufacturing method.In the inductance element, a permanent magnet 3 composed of Sr ferrite is installed...
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JP2002170714A |
To provide a laminated inductor for which Ba ferrite can be sintered at a low temperature and which can be miniaturized, and its manufacturing method.An inductance element is formed by successively laminating a plurality of magnetic laye...
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JP2002170719A |
To provide an inductance part in which a limitation is reduced in the shape of a mounted permanent magnet, the heat generation of the permanent magnet is inhibited by magnetic flux by a coil wound on a magnetic core, and characteristics ...
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JP2002170708A |
To provide a magnetic bias type inductance element with Sr ferrite capable of being sintered at a comparatively low temperature and its manufacturing method.When a magnetic layer and a conductive layer are laminated and formed by a print...
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JP2002170720A |
To inhibit the dispersion of characteristics such as an inductance value in a transmission transformer in which a permalloy or the like is applied to a magnetic core (a laminated core).The transmission transformer 6 has a bobbin 1 on whi...
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JP2002164217A |
To provide inductance parts which do not restrict the shape of a permanent magnet and the characteristic of which is prevented from deteriorating, by suppressing heat generation from the permanent magnet, using the magnetic flux generate...
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JP2002158128A |
To provide a transformer for securing the reliability in electric connection in mounting without causing varnish to adhere to the tip of a terminal in the coating dipping process of the varnish to a surface-mounted compact transformer wh...
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JP2002158135A |
To provide an electronic component which can have a dielectric constant higher than that of the prior art, a small size, a high performance, an excellent overall electrical characteristic, can suppress fluctuations in dielectric constant...
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JP2002141228A |
To obtain a stabilized high-frequency transformer.In the high-frequency transformer, a primary coil 23 and a secondary coil 24 are formed in parallel coupled lines in one plane, and the remaining primary coil 30 and the other secondary c...
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JP3275972B2 |
PURPOSE: To secure insulation by covering conductors of printed coils with cover lay and to provide a small-size print coil-type transformer. CONSTITUTION: This is about a print coil-type transformer which has a primary- side print coil ...
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JP3274695B2 |
PURPOSE: To reduce transmission loss with coupling efficiency increased by providing no magnetic materials between the counter faces of coil patterns of first and second conductor layers. CONSTITUTION: A first magnetic material layer 1a ...
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JP2002110427A |
To provide a ceramic circuit element which can obtain high reliability without requiring connection between conductors through via holes and can be manufactured easily.This ceramic circuit element is formed in such a way that a plurality...
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JP2002110437A |
To provide a highly efficient power unit which is improved in efficiency and reduced in thickness, weight and cost by finding the spot at which the magnetic flux generated from the coil of a primary-side circuit can be transmitted effici...
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JP3270812B2 |
To make it possible to provide insulation between an electronic stage of high sensitivity and a related power stage by providing a high-frequency pulse transformer for IGBT gate driving device with a primary winding wound around a core o...
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JP2002093628A |
To provide a high-voltage semiconductor switch, capable of driving easily at a low drive circuit voltage and durable at high voltages easily.A pulse transformer made up of a plurality of secondary windings 2, wound radially around an ann...
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JP2002093613A |
To provide a transformer magnetic core material which is suitable for a transformer magnetic core of a modem used in a high-speed data communication, such as ADSL and which is superior in THD characteristics over a wide frequency band.Th...
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JP2002093633A |
To provide a transformer that is reduced in size, easily wound with wirings, and moreover with improved efficiency and high degree of binding between the wirings.A core 1 is formed into a shape of a bar and provided with two windings 5, ...
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JP3269371B2 |
To reduce the number of parts and decrease the number of working steps in a sheet transformer used for various electronic apparatuses. A spiral coil 12 made of punched thin conductor plates is arranged on an insulative film 13a having a ...
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JP2002083722A |
To provide an inductor and a transformer where a permanent magnet for applying a magnetic bias is arranged in the air gap of a magnetic core, and which can reduce influences of the magnetic field of a excitation coil on the permanent mag...
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JP2002075742A |
To solve the problem that conventionally the frequency band which can be used by a balanced transformer is not able to be adjusted once the balanced transformer is manufactured and the transformer must be redesigned, when the usable freq...
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JP2002075741A |
To reduce the size and manufacturing cost of a surface mounting-type transformer.In the surface-mounting type small-sized transformer provided with an upper core (1), a lower core (3), and a winding coil (2), the upper and lower cores (1...
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JP3263022B2 |
To provide a linearity coil which is structure for easy mounting and reducing harmful leaking magnetic fluxes, by simplifying an assembling process so as to lower a height as an electronic component and a center of gravity. A pedestal 4 ...
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JP2002057042A |
To eliminate difficulties of lamination in the conventional method that two coil elements of about 3/4 turn are arranged coaxially on a sheet and they are laminated by turning 90°, and to solve such a problem that a transformer with a v...
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JP2002057035A |
To eliminate the trouble to laminate green sheets on which two coil elements that are of nearly 3/4 turn and arranged in a concentric manner have been formed respectively, rotating each green sheet by an angle of 90°, and to solve a pro...
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JP2002057043A |
To provide a transformer and a reactor which uses FINEMET (R) and are compact and excellent in efficiency and whose cooling efficiency is high and insulation strength is large.A circular FINEMET core 1 is pinched by insulation plates 2 o...
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JP2002050910A |
To provide a balun element having desired coupling characteristics, even if positional deviation occurs during a laminating process.At least one of coupling lines 14c, 14d and coupling lines 14e, 14f is set to be larger than the other in...
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JP2002043882A |
To provide a balanced transformer, which is miniaturized, widens a frequency band to be used and can prevent occurrence of migration.Between an unbalanced terminal 11 and a dummy terminal 14, coils L1 and L2, having the same number of tu...
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JP2002033216A |
To provide a laminated balun transformer, wherein a favorable coupling can be obtained in a wide band extending to a high frequency than a GHz.A laminated balun transformer is constituted in a structure that non-magnetic material layers ...
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JP2002025826A |
To provide a method for reducing the size of a transformer mounted on small-sized communication equipment, typified by modems, etc., without lowering the characteristics of the transformer.This transformer uses a magnetic core, which is ...
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JP3248373B2 |
PURPOSE: To obtain a layer-built coil product having a pair of coils having equal impedances and difficult to generate a leakage flux. CONSTITUTION: A layer-built transformer 1 is composed of an insulator sheet 2 having coil conductors 4...
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JP3249506B2 |
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JP3246431B2 |
To provide winding parts for transformer which can be reduced in thickness, without deteriorating the high-voltage withstand properties of their winding starting and ending wires. The insertion guiding groove 10 of the drum core of a dru...
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JP3240905B2 |
To downsize a transformer by extending and winding an end of a metallic foil with a lead terminal connected, covering a connection of the lead terminal connected to the metallic foil with the metallic foil and separating other metallic f...
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JP2001526482A |
The present invention is a method and apparatus for simply and inexpensively enhancing an electronic audio signal in such a way that the quality of audible sound produced from the audio signal more closely approaches that of the original...
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JP2001332426A |
To enhance manufacturing yield after resin coating by enabling maintaining the reproducibility of the wound body shape (in particular, inner- diameter-side end part), in a magnetic core which uses a thin wound body.This thin magnetic cor...
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JP3233313B2 |
PURPOSE: To produce a nano-crystal allay excellent in pulse decay characteristic by heat-treating an amorphous alloy foil and forming a fine crystal grain structure which is composed essentially of bcc phase and partially contains Fe-B c...
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JP2001319815A |
To provide a signal input and output device which can input high-frequency signals into an electric wire through which a large current having a low frequency, such as the commercial frequency, etc., is made to flow at a stable level and ...
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JP3228068B2 |
PURPOSE: To provide a method for producing a high quality thin plate punching coil being employed in electronic apparatus while sustaining the insulation and a transformer employing such coil. CONSTITUTION: The method for producing a thi...
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JP3223425B2 |
To obtain a transformer in which stray capacitance and leakage inductance can be decreased. A first group of conductive patterns a1-a5 constituting the primary winding of a transformer and a second group of conductive patterns b1-b5 cons...
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JP2001297925A |
To provide a coil bobbin which has improved insulation between a lead wire and a core and high reliability, and a transformer and a cholk coil using the same. A terminal block 7 is provided with a plurality of pins 1 and 2 erected in the...
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JP2001291621A |
To provide a transformer, in which the creeping distances between a transformer core and transformer pins can be secured sufficiently, without having to increase the size of the transformer. A creeping distances L from the transformer pi...
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JP3219586B2 |
PURPOSE: To provide a choke coil which can be used for both a normal mode and common mode and is improved in normal-mode noise inhibiting characteristic without lowering the common-mode noise inhibiting characteristic. CONSTITUTION: A ch...
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JP2001274020A |
To provide a boosting circuit which can highly efficiently boost a voltage, a transformer which can be used suitably in the boosting circuit, and a coil and a coil unit which can be used suitably in the transformer. The spirally wound co...
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JP2001267139A |
To provide a transformer for communication which can transmit high-frequency signals with a low loss.This transformer for communication is constituted by winding a multiconductor parallel cable (10), in which a plurality of conductors ar...
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JP3208747B2 |
PURPOSE: To provide a plane type transformer having small noise by reducing electrostatic energy to be stored between a coil pattern of a primary winding and that of a secondary winding. CONSTITUTION: Conductive coil patterns to be forme...
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JP2001244118A |
To provide a small balun transformer circuit.The small balun transformer is provided with a primary and secondary conductor loops. These loops are respectively provided on a substantially plane spiral structure. However, one of the loops...
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JP3203059B2 |
PURPOSE: To enable a connecting operation to be easily automated by a method wherein a terminal and the lead wire of an electronic part are connected together by spot welding. CONSTITUTION: A metal terminal 3 is planted on a terminal mou...
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JP3203883B2 |
PURPOSE: To obtain the title thin type printed coil type transformer as a folding flexible printed substrate. CONSTITUTION: The title printed coil type transformer wherein a flexible printed substrate is zigzag bent having eddy type cond...
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JP3199370B2 |
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