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| Number | Title | Issue Date |
| 8179116 | Inductor assembly having a core with magnetically isolated forms An embodiment of an inductor assembly includes a core, a first conductor, and a second conductor. The core includes first and second members, a first group of one or more forms extending between the members, a second group of one or more forms extending between the ... | 05/15/2012 |
| 8076922 | Inductor assembly having a core with magnetically isolated forms An embodiment of an inductor assembly includes a core, a first conductor, and a second conductor. The core includes first and second members, a first group of one or more forms extending between the members, a second group of one or more forms extending between the ... | 12/13/2011 |
| 7405951 | Switching power supply device A switching power supply includes: a first series circuit, connected to both terminals of a direct current power supply Vdc1, in which a primary winding 5a of a transformer T, a reactor L3 and a first switch Q1 are connected in ser... | 07/29/2008 |
| 7280026 | Extended E matrix integrated magnetics (MIM) core A matrix integrated magnetics (MIM) “Extended E” core in which a plurality of outer legs are disposed on a base and separated along a first outer edge to define windows therebetween. A center leg is disposed on the top region of the base and separated from the o... | 10/09/2007 |
| 7236076 | Electric component having a variable air gap effect An electric component having a variable air gap effect comprises two cores having a magnetic field air gap disposed at the connecting position of the two cores, and a coil wound around the cores and disposed at the installing position of the magnetic field air gap, ... | 06/26/2007 |
| 6965291 | Circuit component and transformer device with controllable impedance and with systems equipped with such devices A circuit component (L1) with controllable impedance, includes a body (1) of a magnetizable material, a main winding (A1) wound round the body (1) about a first axis and a control winding (A2) wound round the body (1) about ... | 11/15/2005 |
| 6937130 | Magnetic field production system, and configuration for wire-free supply of a large number of sensors and/or actuators using a magnetic field production system A magnetic field production system is proposed and has a two-dimensional winding configuration with two windings. The windings are disposed essentially orthogonally with respect to one another and enclose a machine or system. The windings have winding axes that are ... | 08/30/2005 |
| 6933822 | Magnetically influenced current or voltage regulator and a magnetically influenced converter A magnetically influenced current or voltage regulator includes a body of an anisotropic magnetisable material that provides a closed magnetic circuit. A first electrical conductor is wound around the body along at least a part of the close circuit for at least one ... | 08/23/2005 |
| 5886516 | Series resonant converter transformer assembly having integral inductor tank elements A transformer assembly in which an isolation transformer and two additional inductor elements of a series/parallel resonant converter are physically integrated in a cost and space-efficient design. The transformer and two inductors are integrated through ... | 03/23/1999 |
| 5764500 | Switching power supply A switching power supply (30) uses a transformer 37 having a first primary winding (38A) and a second primary winding (38B) wrapped around the same core (52, 53) but wrapped around opposite sides of the core (52, 53). One of the ends from each of a pair o... | 06/09/1998 |
| 5672963 | Variable induction control led transformer An operator controllable transformer having a variable inductor with a control coil is provided. The transformer includes phase control circuitry to control the output of the transformer by phase controlling current flow in the control coil, thereby contr... | 09/30/1997 |
| 5363035 | Phase controlled transformer An operator controllable transformer having a shunt magnetic path with a control coil is provided. The transformer includes phase control circuitry to control the output of the transformer by phase controlling current flow in the shunt coil, thereby contr... | 11/08/1994 |
| 5342497 | Electrophoresis system The invention provides an electrophoresis system which separates charged chemical substances by means of applying an electrical potential across a buffer solution which includes those chemical substances. The system of the invention includes a power suppl... | 08/30/1994 |
| 5187428 | Shunt coil controlled transformer A transformer having a shunt magnetic path and a shunt coil is provided. The transformer includes control circuitry to control the output of the transformer by controlling current flow in the shunt coil, thereby controlling the flux through the shunt magn... | 02/16/1993 |
| 4980811 | Power source apparatus A power source apparatus includes a transformer having a plurality of paired winding portions of primary and secondary windings wound around cores divided by a gap, a driver, connected to the primary winding of the paired winding portion, for switching en... | 12/25/1990 |
| 4858095 | Magnetron drive apparatus In a magnetron drive apparatus a high frequency voltage converted and outputted by a frequency converter is inputted to a primary winding of a transformer and a high voltage power outputted from a secondary winding of the transformer is rectified and supp... | 08/15/1989 |
| 4841428 | Non-saturating magnetic amplifier controller A magnetic amplifier including a magnetic core having a primary leg, a secondary leg, and a control leg. A primary winding is wound about the primary leg of the magnetic core for generating a non-saturating magnetic AC flux in the magnetic core, and a sec... | 06/20/1989 |
| 4795959 | Harmonic inductor for generation of an energy conserving power wave An energy convertor for generating a power output waveform that contains a fundamental sine wave and a controlled amount of the third harmonic wave to eliminate the sinusoidal peaks and to provide a desired flat top at reduced amplitude. The synchronized ... | 01/03/1989 |
| 4766365 | Self-regulated transformer-inductor with air gaps The transformer comprises a three-limbed magnetic core having two outer limbs each defining a central air gap. Two windings, an alternating current one and a direct current one, are wound around each outer limb. Primary and secondary windings are disposed... | 08/23/1988 |
| 4737704 | Transformer for arc and plasma setups having broad current adjustment range A variable-ratio transformer for arc and plasma setups, comprising a magnetic core made up of a main part composed of two yokes and legs in accordance with the number of phases and an additional part disposed on the side of the yoke of the main part of th... | 04/12/1988 |
| 4620144 | Self-controlled variable inductor with air gaps An electric power apparatus, namely a variable inductor comprising a magnetic core provided with a center limb and two outer limbs all having first and second ends. The first ends are interconnected through a first common point of the magnetic core, and t... | 10/28/1986 |
| 4459653 | Apertured transformer and inverter using same A bifluxer type transformer for use in a static inverter utilizes an E-E or shell-type core. Such configuration is particularly suitable for ballasting hid lamps because it minimizes stray flux which causes eddy current losses in the luminaire metal enclo... | 07/10/1984 |
| 4417200 | Current control A method and a device which are dependently and cojointly employed in the accurate control of the increase and decrease of alternating current, direct current, and concomitant electrical current extending through circuitry and passing to and through elect... | 11/22/1983 |
| 4339706 | Current controlling A generally figure-of-eight transformer core carries first, second and third toroidal windings spaced along its central leg and is formed with magnetic shunts across the gaps between central and outside legs in the planes between windings. A capacitor is ... | 07/13/1982 |
| 4210859 | Inductive device having orthogonal windings An inductive device comprising a magnetic core and windings for producing two or three substantially orthogonal magnetic fields at all points within the core. The device may be utilized as an inductor or transformer in a variety of applications.... | 07/01/1980 |
| 4206434 | Regulating transformer with magnetic shunt A regulating power transformer has a DC-shunt control arranged so that coupling between the primary and secondary windings of the transformer over substantially the entire range from 5% to 95% of rated line input may be achieved, with low harmonic compone... | 06/03/1980 |
| 4138636 | Voltage regulating transformer having EI laminations and two center legs of different reluctance A shell-type voltage regulating transformer includes a magnetic core comprising a stack of modified EI laminations having a center leg forming two sections. One of the center leg sections defines a low reluctance magnetically saturable path while the othe... | 02/06/1979 |
| 4117524 | Current-limiting devices A current-limiting device for an alternating current system has for each phase a pair of saturable reactors each with an iron core, an alternating current winding and a superconducting direct current bias winding which is common to the reactor cores and b... | 09/26/1978 |
| 4045823 | Current limiting devices for alternating current systems A current-limiting device for A.C. systems comprises saturable reactors with superconducting bias windings which maintain the reactors in saturation for normal A.C. loads. Excess current drives one of the reactors out of saturation on alternate half-cycle... | 08/30/1977 |
| 4039929 | Inductive transducer for rectilinear or rotational displacement The inductance of a coil wound on one end of an elongated rectangular core with an elongated central window is caused to vary by the displacement of a conducting plate or ring arrangement lengthwise of the core. The other end of the core may also be wound... | 08/02/1977 |
