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7616087 |
Installation for transmission of electric power
An installation for transmission of electric power via a high-voltage ac voltage line between two switchgear units located at a large distance from each other. For the transmission of the electric...
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7449843 |
Transformer for driving multi-lamp and backlight module thereof
A transformer for driving multi-lamps and a backlight module thereof are provided. The transformer comprises a primary winding, a secondary winding, a core, a first bobbin and a second bobbin. The...
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7443278 |
Coil device, composite coil device, and transformer device
A transformer-type compact and thin coil device having a high coupling degree between a primary coil and a secondary coil, and a transformer device in which a plurality of sets of the...
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7317372 |
Air-core coil and process for fabricating the same
The present invention provides an air-core coil 21 wherein one conductor is wound into a spiral form to thereby form consecutively, axially of the coil, a plurality of unit turn portions ( 25,...
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6820321 |
Method of making electronic transformer/inductor devices
Methods of construction for inductive components such as inductors, chokes, and transformers enable these components to be fabricated using mass production techniques, thereby avoiding the need to...
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6768411 |
Electric motor stator assembly having novel winding arrangement and method of making same
A stator assembly for use in an electromechanical machine includes an improved concentric winding arrangement. Groups of concentric coils are alternately inserted from both ends of the stator core....
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6646536 |
Single coil of coil unit for linear motor and winding former thereof
A single coil for constituting a compact coil unit for a linear motor is provided. A single coil of a coil unit for a linear motor includes a pair of effective conductors for contributing to...
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6617949 |
Choke coil
A choke coil has small difference of wire wound resistances between coils to obtain sufficient unbalance attenuation amount, superior in workability in winding and reduced leakage inductance and...
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6366023 |
Starter modules for motor vehicle headlight discharge lamps
A starter module for a discharge lamp, especially for a motor vehicle, includes a high tension transformer which has a magnetic circuit component such as an annular core, on which a primary winding...
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6252483 |
Slant winding electromagnetic coil and ignition coil for internal combustion engine using same
An electromagnetic coil which may be employed as an ignition coil for an internal combustion engine is disclosed. The electromagnetic coil includes a lower voltage winding portion and a higher...
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6232863 |
Spool assembly for an ignition coil
An ignition coil for a spark ignition engine generally includes primary and secondary windings disposed about a magnetic core. The secondary winding is wound around a spool. The spool includes a...
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6069549 |
Winding, particularly for a high-voltage ignition coil circuit
A process for producing a coil of wire formed at least partially of substantially frustoconical plies of wires laid against one another in a continuous fashion. Wire is first wound onto a core in a...
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6064291 |
Converter transformer
The present invention provides a small, light-weight converter transformer of high efficiency which has an excellent noise characteristic, a high coupling and good output voltage characteristic,...
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5949320 |
Self fusing solenoid coil
A portion of a solenoid coil melts after a predetermined time period has elapsed to interrupt the flow of current through the coil. The portion which melts can include a reduced cross sectional...
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5929736 |
Engine igniting coil device and method of winding an ignition coil
In an engine igniting coil device comprising an ignition coil assembly potted integrally in a coil case by injecting melted insulating resin, a secondary coil is formed on a coil bobbin by bank...
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5455392 |
Insulated winding, together with process and semi-finished product for the production thereof
The invention concerns an electrical winding with a conductor layer (14) which is sealed in an insulating layer (30) of polyethylene. The polyethylene has a degree of crosslinking of at least 60%...
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5430273 |
Induction cooker heating system
An inductive cooker heating system has a high frequency-supplied induction coil. The thickness or wire thickness of the single conductors for a conventional frequency between 20 and 30 kHz (25...
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5311163 |
Electrically operated magnetic switch designed to display reduced leakage inductance
An electrically operated magnetic switch is disclosed herein for use in opening and closing a circuit between two terminals depending upon the voltage across these terminals. The switch so...
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5153549 |
Coil inductor with metal film on wire
An inductor having a metal wire which is made of a copper base wire, a first film of a metal which is diffusible into solder, on the copper base wire, a second film of a metal which has fine...
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5140292 |
Electrical coil with overlying vitrified glass winding and method
A coil has one or more layers of primary and secondary windings about a bore liner, with the primary and secondary windings separated by a winding of glass threads. The coil is heated in an oven to...
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5093646 |
High frequency matrix transformer
A high frequency matrix transformer comprises a plurality of interdependent magnetic elements interwired as a transformer. The various component parts of the high frequency transformer are arranged...
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5065128 |
Hermetically sealed high-pressure solenoid coil and method
A solenoid coil is fabricated by precisioin winding a length of bondable magnet wire on a mandrel, heating and axially compressing the precision-wound convolutions to cause the bondable insulation...
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4993064 |
Subscriber line interface circuit and transformer therefor northern telecom limited
In a SLIC in which loop current is supplied via active circuits, feed resistances via which the active circuits are conventionally coupled to the line are constituted by bifilar resistance wire...
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4819322 |
Method for manufacturing a flat coil
A process for producing a flat coil of high reliability and free from the problem of short-circuiting, and capable of high productivity. The process includes steps of forming an insulator layer on...
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4811477 |
Method of winding toroid transformers
Secondary winding configurations and methods particularly applicable for toroid transformers are described for winding secondary windings over the indexed primary winding and toroidal core. The...
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4794361 |
Coil winding method for maximum utilization of winding envelope
A coil winding method wherein only one-half turn is wound in the bottom slot of the first layer of the coil. This results in the loss of one-half turn, but causes the normal crossover from the...
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4698473 |
Refractory metal-lined induction coil
An improved induction coil of a type used in heat treating metal workpieces comprises a protective lining bonded to a copper coil, which lining is formed preferably of a substantially molybdenum...
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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...
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4496927 |
Multilayer coil
A multilayer coil is formed from a single conductor wire having first (beginning) and second (terminating) lead wires, the conductor wire being first formed as a coil winding with a plurality of...
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4457792 |
Method of manufacturing a molded coil
A method of manufacturing a molded coil for use in an electric apparatus such as a molded transformer or a reactor. The method includes the steps of covering a winding with an insulating prepreg,...
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4449685 |
Coupling for inducing a current in the rails of a railroad track
The purpose of the invention is to reduce the total power consumed by a coupling for inducing a high-frequency alternating current in the rails of a railroad track for the purpose of transmitting...
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4216455 |
Inductive device with precision wound coil
An improved inductive device such as a transformer of the type containing a closed magnetic core, typically formed of magnetic laminations, with at least one coil-receiving core window and an...
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4161306 |
Electro-magnetic valve
An electro-magnetic valve having a very fast response and a favorable temperature-gradient characteristic. The valve includes an iron core which carries a stationary magnetic winding within a valve...
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4020375 |
Dynamoelectric machine coil
The conductor wire in a dynamoelectric machine armature and the like is insulated by a single ply longitudinal wrapping of insulating material stretchable at least 12% in a longitudinal direction...
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3992690 |
Composite electromagnetic coil
This electromagnetic coil is composed of concentric multi-turn windings in magnetic aiding relationship, one winding being formed of copper wire and the other of wire made of copper contaminated...
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3987386 |
Tunable air coil inductor
The inductor coil includes two helical wire coil sections, one within the other. The coil sections are integral at one end of the coil and have terminals at the other end extending parallel to the...
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3764944 |
SPIRAL MOTOR COIL
An electromagnetic coil comprises a rigid bimetallic plate of substantially uniform thickness and spiral configuration, the axis of the spiral extending in the direction of the thickness of the...
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3689833 |
PARTICLE ANALYZING APPARATUS
Electronic particle analyzing apparatus operating in accordance with the Coulter principle in which it is desired to isolate the aperture electrically from the electrolyte or suspending fluid flow...
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3663909 |
TRANSFORMER WITH MEANS FOR CONVEYING ELECTRIC ENERGY TO ROTARY CURRENT-COLLECTING DEVICES
A transformer with means for conveying electric energy to rotary current-collecting devices, having a stationary core carrying a primary winding and at least one secondary winding having at least...
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3599074 |
HIGH-POWER DIRECT-CURRENT TO SQUARE-WAVE CONVERTER UTILIZING AN INDUCTIVELY COUPLED GAS DISCHARGE TUBE
A high-power square wave generator employing a transformer, the core of which has a rectangular hysteresis loop and the center-tapped primary winding of which comprises a pair of triggered gas...
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3464002 |
LOW Q TEST COILS FOR MAGNETIC FIELD SENSING
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3458650 |
COMPOSITE WINDING FOR TRANSFORMERS
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3392356 |
Winding formed from conductors of unequal length to reduce mechanical stresses
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3368140 |
Variable autotransformer
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3365688 |
Electromagnetic structures for hightemperature service
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3362001 |
Coreless iron shunt reactor having high dielectric strength insulation
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3362000 |
Means for increasing the inductance of shunt reactors
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3327253 |
Impedance matching ferrite transformer wherein center conductor of associated coaxial cable forms primary winding
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3290550 |
Transformer having conductive gaseous windings
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3257345 |
One-part electrical-insulating resin composition comprising an epoxy resin
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