JPS61227660A - Coil assembly to be electrically controlled - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Public Expenses for Industrial Use] The present invention relates to coils used in electrical and electronic equipment, and more particularly to a fill assembly in which the energization state of each winding is electrically controlled.

[Conventional technology]

Coils, or inductors, are used in rotating machine circuits, transformers, and a wide range of electrical and electronic equipment that utilize static or dynamic magnetic fields. Such coils typically include a continuous conductive wire or other suitable material wrapped around a core or other suitable shape. Some such coils have tags or connection points with seven or more windings between their ends, which allow different parts of the coil to be selectively energized or circuited. It's become a trap. In addition, other coils include
Some have adjustable rotating slugs or adjustable taps at 5 to provide various inductance values.

This type of coil is relatively inflexible in handling ICs and is not well suited for certain applications.

[Problems to be Solved by the Invention] An object of the present invention is to provide a novel and improved device for coil assemblies used in electrical and electronic equipment.

Another object of the present invention is to provide a winding assembly characterized in that the energization state of the individual windings is electrically controlled to provide different inductances, turns ratios and/or energization sequences. be.

Still another object of the present invention is to provide a coil assembly that can be used in a wide variety of equipment requiring dynamic magnetic fields, such as rotating machine circuits, transformers, and the like.

Yet another object of the present invention is to provide a coil assembly with features that allow for ultra-miniaturization.

[Means for solving problems]

The above objects and other objects are achieved in accordance with the present invention by providing a substrate, seventh and first electrically conductive paths provided on said substrate for connection to a source of electrical energy, and said electrically conductive paths on said substrate. This is achieved by providing an electrically VC controlled coil assembly consisting of a plurality of electrical conductors connected in parallel between the two conductors to form the windings of the coil. A control means supported by a substrate is connected in series to each of the conductors, thereby selectively controlling the energization state of the conductor. The coil assembly is microminiaturized on a semiconductor substrate in some embodiments, and integrated on seven circuit boards in other embodiments.

〔Example〕

As shown at 5 in FIG. 1, the coil assembly consists of a pair of conductive paths 11.12, each of which is connected to a source of electrical energy (+V, V). A KvI number of conductors 14 are connected in parallel between the conductive paths to form a coil winding, and an electronic control element 16 controls each conductor in order to control the energization state of these conductors. connected in series to the body. In the illustrated embodiment, the control element is a field effect transistor, the control signal being applied to the control dart of the field effect transistor. However, it should be understood that other suitable control elements may be used if desired.

The conductors forming the coil windings are arranged closely spaced in parallel on a suitable substrate (not shown in this figure), such as a printed circuit board or a semiconductor substrate. In a flat substrate, the magnetic field created by the coil/I/ assembly is such that the components perpendicular to the plane of the winding cancel each other out, and the components parallel to the plane of the winding strengthen. As a result,
becomes a plane magnetic field that is mostly parallel to the winding.

The energization of the coil windings, i.e. the number and configuration of circuit connections, is controlled by applying a signal to the control input of the control element 16 via the control line 17.

These control elements can be turned on or made conductive in a desired sequence, individually or in desired groups or groups, by applying suitable control signals.

In the embodiment of FIG. 2, the substrate consists of a body 21 of semiconductor material having a generally planar upper surface 22. In the embodiment of FIG. On this board there is <I4>25. for connection to an electrical energy source.
26 is formed. A plurality of electrical conductors 28 are spaced in parallel between these paths and form coil windings.

In order to control the energization state of the conductor 28, a control element 31 such as a field effect transistor is connected in series with the conductor 28, and a control signal is applied to the control element 31 via a control line 32. is being applied. In this embodiment, the control element 31 is formed within the semiconductor body according to conventional techniques, and includes control lines 32, paths 25, 26 and conductors 28%t, formed as a metallization layer on the top surface of the semiconductor body. ing. The control line 32 is located below and insulated from the coil winding or conductor 28. This embodiment can also be miniaturized and mounted in a package of the type commonly used for integrated circuits.

Figure 3 particularly shows linear induction motors, speaker coils,
An embodiment of the present invention suitable for use in an electron gun or other equipment requiring a dynamic magnetic field is shown.

This embodiment has a substrate 36 consisting of a roughly rectangular flexible printed circuit board and conductive paths 37, 38 extending laterally near the ends of the printed circuit board for connection to a source of electrical energy. are doing. A plurality of electrical conductors extending in the longitudinal direction of the printed circuit board are spaced parallel to each other between the passes, forming coil windings. At the l end of the printed circuit board, a control element 41 is connected in series with the electrical conductor, which control element 41 controls the energization state of the coil winding. A control line 42 extends laterally across the printed circuit board by means of which control signals are applied to the control element 41 . In this example, path 37.3B
, conductors 39 and control lines are formed by conductive metal foil on a flexible substrate.

The printed circuit board 36 is spirally wound around an axis 43 extending substantially perpendicular to the longitudinal direction of the electrical conductor 39, the electrical conductor 39 being wrapped around the axis 43, and the control element 41, this winding is arranged towards the outer end of the structure. In this embodiment, the magnetic field created by the coil assembly is directed in the direction @43 as in a conventional thinly wound coil, but by selectively energizing the individual fill windings, the magnetic field is directed toward its axis as desired. It is possible to create a magnetic field that moves along the For example, in an electron gun, a coil winding can be energized continuously from one end of a circuit board to the other to create a magnetic field that moves in the direction of its axis.

As shown in phantom, the winding may dispose within the coil assembly a magnetically polarized armature 46 that moves along axis 43 in response to the energization state of the coil winding. The position of the armature and its mode of movement are determined by the energization mode of the coil windings, ie the control signal applied to the control element. Although shown schematically, armature 46 may be a movable member of a linear induction motor, a speaker magnet, a solenoid armature, or other suitable device.

Figure 4 shows a coil assembly 47 of the type described above in combination with a pair of secondary winding assemblies 4B, 49 to form a transformer. In this embodiment, the coil assembly 4
7 consists of a rectangular and almost flat substrate ISI, at both ends of which there are paths 52.5B for connection to an electrical energy source.
is located. Conductors 54 spaced parallel to each other extend between these paths, and a control element 56 is connected in series with each of the conductors 54 to control the energization state of the conductors 54. . The control element is energized with a control signal by control line 57, and fill assembly 47 acts as the primary winding of the transformer.

The secondary winding assembly 48 consists of a rectangular, substantially flat substrate 59 which is disposed substantially parallel to the substrate 5111i. At both ends of this substrate 590, output paths, that is, conductors 61 and 62 extend across the substrate, and a plurality of conductors 62 are connected between these output paths to form a secondary winding. . These conductors 61
．． 82 are spaced parallel to each other and the secondary winding assembly 4'8 is oriented such that its conductor 62 is parallel to the conductor 54 and within the magnetic field created by the biasing of the conductor 54. has been done.

Secondary winding assembly 49 is substantially similar to secondary winding assembly 48 and consists of a substrate 64, output conductors 66, 67, and conductors 68 forming the secondary winding. Furthermore, the secondary winding assembly 49 has a rectifying element or diode 69 connected in series with the conductor 6'8, whereby the current induced in this winding is rectified into the OC output current.

In the transformer of FIG. 7, the L missing winding fsm stand and the secondary winding assembly are conventionally constructed in the form of a printed circuit board, and the conductors and paths are provided on the circuit board. Composed of foil. Alternatively, a transformer of this type may be constructed 54'W with seven or more primary windings on the opposite side of the seven printed circuit boards from the secondary windings. The number of conductors in each winding can be selected to provide a desired turns ratio, and the output voltage can be adjusted by controlling the number of energized/subsequent windings.

[Brief explanation of drawings]

FIG. 1 is a diadarum illustrating one embodiment of an electrically controlled coil assembly according to the present invention; FIG. 1 is a schematic isometric diagram illustrating one embodiment of a coil assembly incorporating features of the present invention; FIG. 3 is a schematic isometric view of a second embodiment of a coil assembly incorporating features of the present invention; FIG. 3 is a schematic isometric view of a transformer incorporating a coil assembly of the present invention FIG. 3 is an illustrative exploded isometric view. 11.12.25.26.37.38.52.53.6
1.62.66.67 ,,, bus, 14.28.
39.54.68 , , , g electric body, 16.31.
41.56 ,,,control element, 17.32.42.5
7. Control line, 21...Semiconductor body, 2
2...Top surface, 36.51.59.64. ,. Board, 4 near, - next volume S assembly, 48.49・1.・Secondary volume 1 assembly. ~FIG, 4 Procedural amendment (method) 1. Indication of the case 1985 Patent Application No. 66365 2. Title of the invention Electrically controlled coil assembly 3. Person making the amendment Relationship to the case Applicant Name Tortus See Hansen 4, Agent

Claims (1)

[Claims] A substrate, a plurality of conductors supported by the substrate and connected in parallel to form a coil winding, and a control means connected in series with each of the conductors to selectively control the energization state of the conductors. An electrically controlled coil assembly consisting of.