|
Match
|
Document |
Document Title |
|
|
5126714 |
Integrated circuit transformer
An integrated circuit transformer (58) which is constructed in a laminar hion is disclosed. The present invention includes a bottom plate (10) with cores (14) protruding from its upper surface (13)...
|
|
|
5126715 |
Low-profile multi-pole conductive film transformer
A folded conductive film winding transformer provides a plurality of poles and enables increased turns ratios or power handling capacity in structures which must meet severe height limitations.
|
|
|
5084699 |
Impedance matching coil assembly for an inductively coupled transponder
A coil assembly for use in an inductively powered transponder including a primary coil and a secondary coil wrapped around the same coil forming ferrite rod. The primary coil's leads are left...
|
|
|
5034717 |
Stationary electromagnetic induction unit
In a stationary electromagnetic induction unit according to this invention, a plate-like coil is constituted by a plurality of coil elements wound in parallel. Therefore, a conductor width of the...
|
|
|
5017902 |
Conductive film magnetic components
A conductive film magnetic component such as an inductor or transformer includes a conductive film winding having a generally serpentine configuration when disposed in a plane. This film is folded...
|
|
|
5010314 |
Low-profile planar transformer for use in off-line switching power supplies
A low-profile planar type transformer having a unique bobbin design and a minimum of other pieces. The transformer is assembled by simply stacking all of the pieces, other than core pieces, in a...
|
|
|
4977491 |
High frequency transformer with a printed circuit winding in particular for a very high voltage power supply
A high frequency transformer is made on a magnetic circuit which can be of a generally square shape. The secondary windings are made on printed circuit plates, separated by insulators and traversed...
|
|
|
4959630 |
High-frequency transformer
A high-frequency transformer is constructed from a flexible circuit comprising a primary conductive film winding and one or more secondary conductive film windings disposed on a single dielectric...
|
|
|
4937729 |
Chopper power supply including a printed circuit transformer
A chopper power supply includes a transformer having first and second primary winding segments as well as first and second secondary winding segments respectively associated with the first and...
|
|
|
4918418 |
Inductive coil structure with electrical return path
An apparatus is provided for use with non-contacting torque sensors. Many non-contacting torque sensors use bulky inductive coil structures to induce magnetic flux into the shaft whose torque is to...
|
|
|
4891980 |
Liquid level gauge
A liquid level gauge comprising a core disposed inside a liquid container that has a cross sectional configuration that varies in the direction of its height, the core extending in the vertical...
|
|
|
4816784 |
Balanced planar transformers
A monolithic transformer comprises two windings arranged in a plane with conductors of the windings interleaved with and crossing one another, whereby each winding is symmetrical with respect to a...
|
|
|
4803453 |
Laminated transformer
A laminated transformer includes a plurality of ferrite sheets having surfaces on which conductor patterns are formed and are laminated and baked to be a sintered body, and a pair of the primary...
|
|
|
4763093 |
High-power pulse transformer for short high-voltage and/or high-current pulses
A high-power pulse transformer for short, high-voltage and/or high-current pulses includes: a base plate in a container, an insulating, cooling dielectric liquid with a given heat transfer...
|
|
|
4694389 |
Proportional transistor base drive circuit for use in power converters and components thereof
A transformer for use in a power converter includes first and second primary windings tightly coupled to a first secondary winding, and third and fourth primary windings tightly coupled to a second...
|
|
|
4683518 |
Ignition for oil burner
An oil burner ignition system includes a transformer primary winding feedback coil and dual secondary coil wound in axially coextensive and mutually coupled relation about a ferrite core. The...
|
|
|
4680566 |
Coil with magnetisable rod core
The invention concerns a coil arrangement with three windings arranged coaxially, where the outer coils are connected in series. The inductances of the outer coils are of equal magnitude and their...
|
|
|
4635019 |
Coil apparatus with divided windings
A coil apparatus for the use of a switching power supply circuit has been found. The coil apparatus having two overlapped coil bobbins has an improved winding arrangement. This arrangement is such...
|
|
|
4627280 |
Inductance liquid level meter
The present invention relates to a liquid level meter, comprising a coil having a core, a float which is provided at the external circumference of coil so that it can move in the longitudinal...
|
|
|
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...
|
|
|
4584551 |
Transformer having bow loop in tubular winding
A transformer comprising a core, a primary winding and a secondary winding in which one of the windings, preferably the winding with the least coils, is formed from a tubular member formed in a...
|
|
|
4577175 |
Transformer with fluid cooled windings
A transformer comprising a core, a primary winding and a secondary winding in which one of the windings, preferably the winding with the least coils, is formed from a tubular member formed in a...
|
|
|
4569345 |
High output electrosurgical unit
An electrosurgical unit including voltage control circuitry which operates to limit the voltage at the electrosurgical electrodes when the unit is not in coagulation mode. The electrosurgical unit...
|
|
|
4518941 |
Pulse transformer for switching power supplies
A pulse transformer for use in a switching power supply having primary and secondary windings wound concentrically around a common core and two electrostatic shield foils interposed between the...
|
|
|
4513243 |
Core form transformer for selective cancellation of subsynchronous resonance
A three phase core form transformer for use in a three phase dual dynamic stabilizer system that provides reactive power compensation. The transformer has a three legged magnetic core, a plurality...
|
|
|
4500833 |
Switched mode power supply transformer
A switched mode power supply transformer, particularly for a television receiver, including a primary winding and a secondary winding with the primary winding and the secondary winding each being...
|
|
|
4500829 |
Advance and retard phase-shift transformer
A phase-shift transformer circuit providing advance or retard phase shift at any predetermined phase shift angle. The phase shift angle is determined by the ratio of the main and short windings of...
|
|
|
4488135 |
Transformer for welding gun
A transformer for a welding gun has a reduced resistance and reactance thus drawing less current. The transformer is of substantially reduced weight and may be operated at high duty cycles and in...
|
|
|
4482945 |
Transformer for low distortion rectifier system
A coil for a 12-pulse transformer-rectifier apparatus assembled on a three-leg magnetic core comprising a half primary winding sandwiched between two half secondary windings of substantially the...
|
|
|
4460885 |
Power transformer
A power transformer characterized by inner and outer low voltage winding sections and a high voltage winding section disposed therebetween. The low voltage windings are comprised of a plurality of...
|
|
|
4437062 |
Eddy current testing apparatus including a two coil probe having sandwiched windings
An eddy current inspection probe includes a bobbin housing a central ferrite rod. Two coils are wound around one end of the ferrite rod. The coils form two legs of a bridge circuit driven at 1.5 to...
|
|
|
4412199 |
Regulating winding connected in series with a main winding of a transformer
The invention relates to a regulating winding for a transformer in which a plurality of helical current-carrying conductor loops are connected in series with each other, whereas a plurality of...
|
|
|
4403205 |
Circuit arrangement for controlling transformer current
A circuit arrangement for power transformers utilizes a series and parallel interconnection of low voltage winding layers to control the impedance between the high voltage winding and the low...
|
|
|
4400675 |
Transformer with impedance matching means
A transformer characterized by groups of low voltage and high voltage windings inductively related to a core member, and a shunt of magnetizable microlaminations disposed between the low and high...
|
|
|
4376274 |
Printed circuit transformers
A printed circuit transformer comprises one primary track and two secondary tracks, the three tracks being located adjacent and substantially parallel to each other with one side of one of the...
|
|
|
4335423 |
Transformer
A transformer includes a magnetic core; an input or primary winding structure wound on a bobbin secured to the magnetic core and including first and second primary winding portions; an output or...
|
|
|
4320373 |
Power transformer with high coupling coefficient
A primary coil and N secondary coils of insulated electrically conductive wire are wound side-by-side about a ferrite core. Every T turns, the wire forming the secondary coils is wound over a...
|
|
|
4311977 |
Output transformer
An output transformer, especially useful to couple a balanced output stage to an unbalanced load, employs first and second primary winding halves, which have their "center taps" physically offset,...
|
|
|
4297665 |
Doughnut-type transformer for resistance butt welding
The doughnut-type transformer comprises a spirally wound core consisting of several individual annular cores each tightened by rod members. The annular core is surrounded by transformer sections...
|
|
|
4271345 |
Induction heating coil
An induction coil heating device is provided to proximately heat an aperture mask support pin in a relatively confined space in the corner of a television panel skirt. A primary coil adapted to...
|
|
|
4258467 |
Method of making transformer
A primary coil and N secondary coils of insulated electrically conductive wire are wound side-by-side about a ferrite core. Every T turns, the wire forming the secondary coils is wound over a...
|
|
|
4253079 |
Displacement transducers employing printed coil structures
There is disclosed a displacement transducer which comprises a plurality of planar circuit boards, each having a coaxial central aperture. Each of said boards having disposed thereon at least one...
|
|
|
4247841 |
Three winding transformer
Low, middle and high voltage windings are wound on a magnetic core in this order, the high voltage winding having a high voltage line terminal at its center and neutral terminals at both ends. Two...
|
|
|
4236133 |
Transformer with foil windings
In a transformer of the type having spirally wound copper foil windings, capacitive signal transfer between the primary and secondary windings is avoided by placing the turns of the winding having...
|
|
|
4159457 |
Low voltage high current transformer
A transformer providing half-turn windings to permit low voltage output and high current capability. An E-I magnetic core, forming a central leg and two outer legs, provides a magnetic flux path....
|
|
|
4020438 |
Autotransformer with series and tertiary windings having same polarity impedance
An autotransformer having the same polarity impedance, series and tertiary windings as defined by an equivalent three-terminal network of said autotransformer. Autotransformers are often protected...
|
|
|
3948100 |
Probe for measuring the level of a liquid
A probe of the mutual inductance type with a linear response which is independent of temperature comprises a rigid support, two insulated cables disposed in interengaged relation and wound on the...
|
|
|
3939449 |
Insulated transformer windings
Distribution transformer having inner and outer low-voltage winding sections and a high-voltage winding section disposed therebetween. Insulation structures separate the various winding sections...
|
|
|
3939403 |
Device for maintaining constant the temperature of a coil fed by an A.C. current source
A measuring coil comprises two windings, each being formed by winding simultaneously two insulated wires having the same size, the two wires of each winding extending side by side. The windings...
|
|
|
3936783 |
Medium frequency power transformer with a secondary winding suitable for a rigid connection with an inductor through which the coolant flows
An improved medium power transformer of the type having a secondary winding suitable for rigid connection with an inductor through which coolant flows, the secondary winding conductors overlapping...
|