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| Number | Title | Issue Date |
| 7936243 | Adjustable resistor embedded in multi-layered substrate and method for forming the same An adjustable resistor embedded in a multi-layered substrate and method for forming the same. The adjustable resistor comprises: a planar resistor, having a plurality of terminals; and a plurality of connecting lines connected to the planar resistor, each of the con... | 05/03/2011 |
| 7339447 | High-voltage transformer coil with acoustic wave guiding function The present invention relates to a high-voltage transformer coil with acoustic wave guiding function, which comprises a plurality of wound wires, an insulated material for packaging said wound wires to form a coil, a high-voltage connector formed on a side of said c... | 03/04/2008 |
| 7091811 | Fixing member A device for absorbing axial and radial short-circuit forces in a cable-wound inductor. A fixing member includes an inner envelope surface that surrounds the cable winding of the inductor. ... | 08/15/2006 |
| 7078988 | Common-mode filter A common-mode filter with a drum type core including a core portion and flange portions. Electrodes are provided on the flange portions and a pair of wires are wound on the core portion. The wound pair of wires have ends connected to respective ones of the electrode... | 07/18/2006 |
| 6680667 | Electrical conductor winding and a method of manufacturing an electrical conductor winding An electrical conductor winding (70) comprises a plurality of laminates of electrical insulation (72). Each laminate of electrical insulation (72) has a slot (78) on one surface (76). Each laminate of electrical insulation (70) has an electrical conductor... | 01/20/2004 |
| 6624596 | Device for lighting discharge lamp The discharge lamp lighting device according to the present invention is provided with a high-voltage generating transformer which comprises a core, a secondary winding part disposed in a plurality of sections on the outside of the core, and a primary win... | 09/23/2003 |
| 6351202 | Stationary induction apparatus A stationary induction apparatus superior in insulating ability against a surge voltage includes a coil piece on a line end side surrounded by one electrostatic shield insulating layer. The coil piece and electrostatic shield insulating layer, together wi... | 02/26/2002 |
| 6323469 | Induction heating of metals A fluid cooled electric conductor for induction heating of a workpiece includes a flexible conductor which is enclosed within an insulating tube. The conductor is supported within the tube so as to be surrounded by a fluid conducting space or spaces. A su... | 11/27/2001 |
| 6249201 | Fly back transformer A fly back transformer includes a main body, a collecting element and a wire. The collecting element is fixed to the main body, while the wire is connected to the main body via the collecting element. The collecting element or the main body has a fixing p... | 06/19/2001 |
| 6194248 | Chip electronic part The present invention is a chip electronic part having: a ceramic member; a conductor pattern formed on the surface of the ceramic member; an insulating protective layer formed on the conductor pattern; an external electrode which is formed at least one e... | 02/27/2001 |
| 6191677 | Inductance element The invention relates to an coil former and at least one wire winding arranged on the coil former, the coil former (1) having a cylindrical sleeve (1a) whose cylinder axis runs parallel to the winding axis (A--A) of the at least wire winding, and at least... | 02/20/2001 |
| 6137394 | Ground insulation for coils A bobbin for insulating a coil including a base portion comprising an electrically insulative material having an inner surface, an outer surface, an outer periphery, and a pole opening (54). An inner flange extends outwardly from the base portion in a fir... | 10/24/2000 |
| 6087916 | Cooling of coaxial winding transformers in high power applications A coaxial winding transformer is cooled by having heat transfer members connected to an outer conductor of the transformer to receive heat therefrom. The heat transfer members form a heat transfer conducting path from the outer conductor of the transforme... | 07/11/2000 |
| 6046664 | Welding power supply transformer apparatus and method A welder power supply configuration wherein the power supply includes a combined transformer and inductor assembly wherein the combined transformer and inductor assembly is comprised of a four-legged core, primary windings, secondary windings and inductor... | 04/04/2000 |
| 6002246 | Flyback transformer In a flyback transformer, an insulating cover is interposed between a main body casing and a focusing pack casing. A through-hole is formed through a ceramic resistor accommodated in the focusing pack casing. A fixing hole is formed through the insulating... | 12/14/1999 |
| 5808535 | High frequency water cooled induction heating transformer A high frequency water cooled transformer for coupling a power source to an induction heating coil and which serves to convert the output of the power source into values appropriate for the induction heating coil, and to match the impedance of the power s... | 09/15/1998 |
| 5705971 | Low leakage coaxial transformers A transformer including a core; a concentric inner primary tube passing through the core and running up and over at least a portion of the core, the concentric inner primary tube defining a longitudinal axis within the core; and a concentric outer seconda... | 01/06/1998 |
| 5691685 | High frequency water cooled induction heating transformer A high frequency water cooled transformer for coupling a power source to an induction heating coil and which serves to convert the output of the power source into values appropriate for the induction heating coil, and to match the impedance of the power s... | 11/25/1997 |
| 5592137 | High efficiency, high frequency transformer The present invention locates the primary winding of a transformer in a configuration where it substantially surrounds the secondary winding of the transformer in order to enhance the efficiency of the electromagnetic coupling. High magnetic permeability ... | 01/07/1997 |
| 5587695 | Measuring transformer for solid-state electricity meters The present invention relates to a measuring transformer which contains a primary conductor which carries current to be measured, and a secondary coil which is magnetically coupled thereto. The primary conductor is shaped helically and forms a body, like ... | 12/24/1996 |
| 5550523 | Inductor The inductor has a winding arranged on a straight magnetic core formed by, for example, a ferrite cylinder (4) accommodated in a cylinder (1) made of a moulded plastics material and having a longitudinal groove in its outer cylindrical surface, in which g... | 08/27/1996 |
| 5339061 | Iron-free transformer An iron-free transformer in which electrical energy is transferred from a primary winding to a secondary winding without any electrical connection or inductive coupling therebetween. The transformer includes an iron-free conductive closed loop having inpu... | 08/16/1994 |
| 5309120 | RF high power, high frequency, non-integer turns ratio bandpass auto-transformer and method A high power, high frequency auto transformer with a non-integer turns ratio and a bandpass filter frequency response.... | 05/03/1994 |
| 5300911 | Monolithic magnetic device with printed circuit interconnections A monolithic magnetic device having a plurality of transformer elements having single turn primaries and single turn secondaries fabricated on a plate of ferrite which has the outline of a ceramic leadless chip carrier. Each of the magnetic elements has a... | 04/05/1994 |
| 5130678 | Transmission line transformer with DC isolation A transmission line transformer (20, 30, 31) with inherent DC isolation has two sets (22, 22') of transmission line elements (ZN) with characteristic impedances which vary from relatively high values near the transformer inputs (P1, P2) to relatively low ... | 07/14/1992 |
| 4980654 | Transmission line transformer A transmission line transformer that can balance imperfectly balanced signals, and can convert a balanced input to an unbalanced output. The transformer includes two unbalanced transmission lines each having a characteristic impedance Zo. The o... | 12/25/1990 |
| 4945319 | High frequency impedance transformer An improved physical implementation of a high frequency impedance transformer circuit formed from three coaxial transmission line segments is described. In a preferred embodiment, each transmission line segment is in the form of a one and a half turn coil... | 07/31/1990 |
| 4839616 | Broadband impedance transformer A transformer for modifying the characteristics impedance of a transmission line. The transformer provides non-integer-squared impedance transformation ratios without the need for tapping one of the windings or the use of other non-balanced techniques.... | 06/13/1989 |
| 4777466 | Connector arrangement for electrical circuits in underwater installations, and transformer particularly for use in such arrangement A transformer for current supply and/or signalling purposes, in particular for use in a connector arrangement for electrical circuits in underwater installations, includes a magnet circuit, a first winding having a plurality of turns and a second winding ... | 10/11/1988 |
| 4757295 | Transmission line pulsed transformer A pulsed transformer capable of providing up to 500 kilovolt or higher, 10 nanosecond rise time, and 1000 joule or higher pulses comprising non-conducting or insulated transformer cores each separated by conductive grading rings wherein n coaxial cables i... | 07/12/1988 |
| 4641115 | Radio frequency chokes having two windings and means for dampening parasitic resonances Radio frequency chokes for use in combining and separating radio frequency signals and single phase AC power in the equipment used in cable transmission and distribution systems. The radio frequency chokes include a conductor wound on a magnetic core to f... | 02/03/1987 |
| 4641216 | Signal processor module for ground fault circuit breaker The neutral excitation and differential current transformers of a ground fault circuit breaker are arranged for automated assembly onto the signal processor circuit board to complete the signal processor module prior to insertion within the ground fault c... | 02/03/1987 |
| 4616205 | Preformed multiple turn transformer winding A transformer includes a preformed winding with each turn having a channel cross section. The individual units are joined to form the desired multiturn winding. Another winding is inserted within the channel cross section of the multiturn winding. In one ... | 10/07/1986 |
| 4595843 | Low core loss rotating flux transformer A transformer utilizing a rotating flux for saturating the entire core. The transformer uses a core configured such that a vector sum of the induction produced by two windings in the core rotates through 360°. This is accomplished by arranging the compon... | 06/17/1986 |
| 4583068 | Low profile magnetic structure in which one winding acts as support for second winding A low profile magnetic structure comprising E and I type core shapes is dimensioned with the passage length through the core window being very long compared with a cross sectional dimension of the windows. In a transformer design, windings passing through... | 04/15/1986 |
| 4554518 | Wide band impedance transformer with transformation ratio close to three for radio frequencies A wide band impedance transformer for operating at radio frequencies whose impedance transformation ratio is equal to three within ten percent, comprising coaxial cables connected together so as to determine a transformation ratio equal to (5/3)2 | 11/19/1985 |
| 4507709 | Electrical interconnect arrangement for a GFCI magnetic sensor module plug-in subassembly A ground fault circuit interrupter interconnect arrangement provides wireless connection with line and neutral main current terminals by insertion through an aperture in the interrupter magnetic sensor module to form a magnetic sensor plug-in subassembly.... | 03/26/1985 |
| 4461069 | Device for introducing anti-microphony sponge into an air-cored coil A device for introducing an anti-microphony sponge into an air-cored coil for television channel selectors, comprising an axially displaceable hollow mandrel with an end portion which comprises two diametrically oppositely situated slots. Two blocking mem... | 07/24/1984 |
| 4443779 | Current transformer A current transformer for very high tension units. The transformer has an insulating through bushing and an annular metal chamber both filled with compressed gas, a primary circuit with an input conductor which enters the chamber via the through bushing a... | 04/17/1984 |
| 4320372 | Current transformer for a high-tension installation The invention relates to a current transformer for a high-tension installation, said transformer including a primary winding, a secondary winding and a magnetic circuit, said primary winding including a primary turn suspended coaxial inner and outer condu... | 03/16/1982 |
