US3466580A - Circuit elements especially for use as scanning coils - Google Patents
Circuit elements especially for use as scanning coils Download PDFInfo
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- US3466580A US3466580A US566648A US3466580DA US3466580A US 3466580 A US3466580 A US 3466580A US 566648 A US566648 A US 566648A US 3466580D A US3466580D A US 3466580DA US 3466580 A US3466580 A US 3466580A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/76—Deflecting by magnetic fields only
- H01J29/768—Deflecting by magnetic fields only using printed windings
Definitions
- a circuit element which comprises a tape like structure which is intended to be rolled into a cylindrical or like form to constitute a scanning coil assembly for a cathode ray tube has conductive patterns on each side thereof comprising longitudinally extending substantially rectangular waveforms the two patterns being staggered with respect to each other.
- This invention relates to circuit elements especially for use as scanning coils such as may be used for deflecting electron beams in cathode ray tubes, and especially to such coils for use with vidicon camera tubes.
- Saddle type coils are frequently used to produce line and field deflection in cathode ray tubes and if such coils are to be manufactured inl arge numbers with consistant performance it is desirable that they should be produced by printed circuit techniques.
- a coil comprising a flexible base which is rolled and which supports two overlapping and mutually insulated electrically conductive patterns each pattern comprising a repetitive circumferentially continuous waveform including circumferential parts and alternate parts transverse thereto meeting each other at right angles, one pattern being displaced relative to the other so that the circumferential parts of the respective Waveforms are staggered so that the coil as rolled is equivalent to two diametrically opposed scanning coils wherein the parts transverse to the circumferential parts extend parallel to and longitudinally of the coil surface.
- the pattern which extends circumferentially when the base is rolled, would extend longitudinally if the base be unrolled.
- said base may comprise two layers of insulating material overlapping each other, each supporting a conductive pattern and assembled to form a unit.
- the two patterns may be provided on the outer surfaces of a sheet of insulating material.
- a coil comprising a base rolled to conform to a surface of revolution and supporting two overlapping and mutually insulated electrically conductive patterns, each pattern comprising a repetitive circumferentially extending rectangular waveform, one pattern being displaced relative to the other so that the circumferential parts of the respective waveforms are staggered.
- the pattern which extends circumferentially when the base is rolled, would extend longitudinally if the base be unrolled.
- FIGURE 1 shows the upper side of a circuit element according to the invention
- FIGURE 2 shows the printed pattern on the underside 3,466,580 Patented Sept. 9, 1969 ice of said circuit element shown in FIGURE 1, but viewed from the upper side,
- FIGURE 3 shows the combination of FIGURES 1 and 2
- FIGURE 4 shows a scanning coil according to the invention mounted on a vidicon camera tube.
- a base in the form of a strip of flexible insulating material 1 has side-by-side con tinuous conductors 2 printed on each of its major surfaces.
- Each conductor has alternate longitudinal and transverse parts, corresponding parts of adjacent conductors being parallel so that each conductor conforms to a pattern comprising a repetitive longitudinally extending rectangular waveform in which the alternate longitudinal and transverse parts are at right angles to each other.
- three conductors are shown, although in practice a larger number may be required.
- ten side-by-side conductors have been found suitable, and for field deflection twenty sideby-side conductors have been found suitable.
- the strip is sufliciently long to accommodate several cycles of the square-wave, for example it has been found that with the above-mentioned number of conductors four cycles are suitable for line deflection and eight cycles for field deflection. Furthermore, although as shown the conductors occupy little space compared with the space between them, this is to clarify the drawing, and in practice the conductors may be 0.1 in. wide and the space between them only 0.0-1 in.
- FIGURE 2 shows the pattern of conductors which is laid down on the undersurface of the strip shown in FIG- URE 1, but as seen from the upperside.
- the number, spacing and pattern of conductors is similar to that on the upper surface.
- FIGURE 3 illustrates the complete strip with the conductors on the upper surface as in FIGURE 1 shown in unbroken lines and the conductors on the underside as in FIGURE 2 shown in dashed lines.
- the conductors on the upper and under surfaces are electrically connected by through connectors indicated at 3, and connections provided for terminals for the coils as indicated at 4.
- the pattern on the two surfaces of the base 1, though mutually insulated by the base, are connected together by the connectors 3 to form a single series circuit in which the direction of current flow, for a particular polarity of supply voltage, is indicated by the arrow heads shown on the conductors.
- the two patterns provided respectively on the surfaces of the base 1 are superimposed but displaced longitudinally one relative to the other so that, whereas transverse parts of the two waveforms are in register, the longitudinal parts are staggered.
- the two conductive patterns therefore form a number of virtual elementary coils each of which will produce a magnetic field perpendicular to the plane of the insulating base 1, the magnetic fields having alternately opposite senses.
- the strip as described is rolled as shown in FIGURE 4 round the vidicon tube to form a cylinder, similar parts of the square wave overlapping.
- the lines marked X and Y on the figures overlap, the distance between X and Y representing the circumference of the cylinder.
- the patterns are such that successive cycles of each waveform subtend the same angle at the axis of the cylinder.
- the parts of the conductive patterns which were transverse before rolling the base 1 to conform to a cylindrical surface now become parallel to the cylinder axis and form two diametrically opposite axially extending groups of conductors which are the active turns of two virtual saddle type coils.
- the cylinder or cylindrical surface to which the rolled strip now conforms is of such diameter that alternate transverse parts of the conductors on each surface of the strip are substantially diametrically opposite.
- Leads 6 are connected to the terminals 4 on said strip. Insulation must be provided to prevent overlapping conductors from contacting, and this is provided either by coating the printed circuit with an insulating layer before rolling or by interleaving a separate strip of insulating material in the strip as it is rolled.
- the scale of the pattern longitudinally will generally require to increase gradually along the strip to take account of the increasing diameter of the cyinder as the strip is rolled to fit round the tube to ensure that similar parts of the conductor waveform continue to register.
- the parts of the conductors which are longitudinal when the base 1 is flat need not be spaced, or need not all be spaced, to register exactly on rolling the base.
- the longitudinal spacing of the transverse parts of the patterns may be selected to provide a graded distribution of the axially extended conductors or to increase the angle subtended by the active conductors, when the pattern is rolled.
- Locating holes may be provided along the strip so that with their aid the strip may be rolled with the required accuracy of registration of the conductors over each other.
- the spacing of the conductors and their precise location may be adjusted to produce desired field patterns.
- the flexible base insulating material will be required to differ in shape from that illustrated. It will have the shape of an annular sector, and the rectangular waveform will have to be curved to follow the curvature of said strip.
- the term longitudinally continuous rectangular waveform used in the specification and claims is intended to describe such a waveform as well as the straight form shown in the figures.
- a single strip may have two distinct sets of conductors printed on it, one for line deflection and the other for field deflection, so that both sets of scanning coils for a cathode ray tube may be constructed by rolling a single strip. Furthermore, if electrostatic screens are required between the tube and coils and/or between the two sets of coils these may be printed on the strip and the assembly for the tube against produced by a single rolling operation.
- the invention provides a circuit element which comprises a thin, flexible, elongated insulating member supporting overlapping conductive patterns on its two outer surface areas.
- Each pattern comprises a plurality of side-by-side conductors each conforming to a substantially rectangular waveform consisting of alternate longitudinal and transverse parts at right angles to each other with the longitudinal parts of the rectangular waveform on one surface being staggered with respect to the longitudinal parts of the rectangular waveform on the other surface.
- means are provided connecting the ends of said conductors successively to one another to connect said conductors in a single series circuit, so that the current in the transverse parts of the plurality of conductors on one surface flows in the same direction as the current in the nearest transverse parts of the conductors on the other surface.
- the base need not be composed entirely of insulating material or of a single strip. It may for example consist of more than one layer of insulating material.
- the invention has been described in relation to coils for a television or like pick-up tube, it is applicable to cathode ray image reproducing tubes and the like. Further, the invention is not restricted in its application to scanning coils but may be applied to the formation of resolver coils, motor coils and the like.
- a circuit element comprising a flexible base which supports two overlapping and mutually insulated electrically conductive patterns, each pattern comprising a repetitive longitudinally continuous substantially rectangular waveform consisting of alternate longitudinal and transverse parts at right angles to each other, one pattern being displaced relative to the other so that the longitudinal parts of the respective waveforms are staggered so that the base can be rolled in such a way as to cause the patterns to form the equivalent of two diametrically opposed scanning coils wherein the transverse parts become parallel to the coil axisand the longitudinal parts extend circumferentially of the coils.
- a circuit element according to claim 1 in which said patterns are adherent respectively on two surfaces of flexible insulating sheet material forming said base.
- each pattern includes a plurality of side-by-side conductors each of which conforms to the respective longitudinal waveform.
- a circuit element according toclaim 1 in which the patterns are electrically connected together to form a single series circuit, so that the current in each transverse part of one waveform flows in the same direction as a current in the nearest transverse part of the other Waveform.
- a coil comprising a flexible base which is rolled and which supports two overlapping and mutually insulated electrically conductive patterns each pattern comprising a repetitive circumferentially continuous waveform including circumferential parts and alternate parts transverse thereto meeting each other at right angles, one pattern being displaced relative to the other so that the circumferential parts of the respective waveforms are staggered so that the coil as rolled is equivalent to two diametrically opposed scanning coils wherein the parts transverse to the circumferential parts extend parallel to and longitudinally of the coil surface.
- a coil comprising a flexible base which is rolled and which supports two overlapping and mutually insulated electrically conductive patterns each pattern comprising a repetitive circumferentially continuous rectangular waveform including circumferential parts and alternate parts transverse thereto meeting each other at right angles, one pattern being displaced relative to the other so that the circumferential parts of the respective waveforms are staggered so that the coil as rolled is equivalent to two diametrically opposed scanning coils wherein the parts transverse to the circumferential parts extend parallel to and longitudinally of the coil surface.
- a circuit element comprising:
- each pattern comprising a plurality of side-by-side conductors each conforming to a substantially rectangular waveform consisting of alternate longitudinal parts and transverse parts at right angels to each other,
- ((1) means-connecting the ends of said conductors successively one to another to connect said conductors in a single series circuit, so that the current in the transverse parts of the plurality of conductors on one surface area flows in the same direction as the current in the nearest transverse parts of the conductors on the other surface area.
- a circuit element according to claim 9 in which said flexible insulating member is rolled to conform to a cylindrical surface wherein the transverse parts become parallel to the axis of such cylindrical surface and the longitudinal parts extend circumferentially of such cylindrical surface and said cylindrical surface being of such diameter that alternate transverse parts of the conductors on each surface area of the member are substantially diametrically opposite,
Description
E. W. BULL Sept. 9, 1969 CIRCUIT ELEMENTS ESPECIALLY FOR USE AS SCANNING COILS Filed July 20, 1966 llllall FIGS FIG.2
FIGZI United States Patent U.S. Cl. 335-213 Claims ABSTRACT OF THE DISCLOSURE A circuit element which comprises a tape like structure which is intended to be rolled into a cylindrical or like form to constitute a scanning coil assembly for a cathode ray tube has conductive patterns on each side thereof comprising longitudinally extending substantially rectangular waveforms the two patterns being staggered with respect to each other.
This invention relates to circuit elements especially for use as scanning coils such as may be used for deflecting electron beams in cathode ray tubes, and especially to such coils for use with vidicon camera tubes.
Saddle type coils are frequently used to produce line and field deflection in cathode ray tubes and if such coils are to be manufactured inl arge numbers with consistant performance it is desirable that they should be produced by printed circuit techniques.
It is an object of the present invention to produce an improved circuit element which can serve as a printed circuit scanning coil.
According to the invention there is provided a coil comprising a flexible base which is rolled and which supports two overlapping and mutually insulated electrically conductive patterns each pattern comprising a repetitive circumferentially continuous waveform including circumferential parts and alternate parts transverse thereto meeting each other at right angles, one pattern being displaced relative to the other so that the circumferential parts of the respective Waveforms are staggered so that the coil as rolled is equivalent to two diametrically opposed scanning coils wherein the parts transverse to the circumferential parts extend parallel to and longitudinally of the coil surface. The pattern which extends circumferentially when the base is rolled, would extend longitudinally if the base be unrolled.
It will be appreciated that said base may comprise two layers of insulating material overlapping each other, each supporting a conductive pattern and assembled to form a unit. Alternatively the two patterns may be provided on the outer surfaces of a sheet of insulating material.
According to another aspect of the invention there is provided a coil comprising a base rolled to conform to a surface of revolution and supporting two overlapping and mutually insulated electrically conductive patterns, each pattern comprising a repetitive circumferentially extending rectangular waveform, one pattern being displaced relative to the other so that the circumferential parts of the respective waveforms are staggered. The pattern which extends circumferentially when the base is rolled, would extend longitudinally if the base be unrolled.
In order that the invention may be clearly understood and readily carried into effect, it will now be described by way of example with reference to the accompanying drawings, in which:
FIGURE 1 shows the upper side of a circuit element according to the invention,
FIGURE 2 shows the printed pattern on the underside 3,466,580 Patented Sept. 9, 1969 ice of said circuit element shown in FIGURE 1, but viewed from the upper side,
FIGURE 3 shows the combination of FIGURES 1 and 2, and
FIGURE 4 shows a scanning coil according to the invention mounted on a vidicon camera tube.
Referring to FIGURE 1, a base in the form of a strip of flexible insulating material 1 has side-by-side con tinuous conductors 2 printed on each of its major surfaces. Each conductor has alternate longitudinal and transverse parts, corresponding parts of adjacent conductors being parallel so that each conductor conforms to a pattern comprising a repetitive longitudinally extending rectangular waveform in which the alternate longitudinal and transverse parts are at right angles to each other. For the sake of simplicity in the drawing only three conductors are shown, although in practice a larger number may be required. For example in a coil for line deflection ten side-by-side conductors have been found suitable, and for field deflection twenty sideby-side conductors have been found suitable. The strip is sufliciently long to accommodate several cycles of the square-wave, for example it has been found that with the above-mentioned number of conductors four cycles are suitable for line deflection and eight cycles for field deflection. Furthermore, although as shown the conductors occupy little space compared with the space between them, this is to clarify the drawing, and in practice the conductors may be 0.1 in. wide and the space between them only 0.0-1 in.
FIGURE 2 shows the pattern of conductors which is laid down on the undersurface of the strip shown in FIG- URE 1, but as seen from the upperside. The number, spacing and pattern of conductors is similar to that on the upper surface.
FIGURE 3 illustrates the complete strip with the conductors on the upper surface as in FIGURE 1 shown in unbroken lines and the conductors on the underside as in FIGURE 2 shown in dashed lines. The conductors on the upper and under surfaces are electrically connected by through connectors indicated at 3, and connections provided for terminals for the coils as indicated at 4. The pattern on the two surfaces of the base 1, though mutually insulated by the base, are connected together by the connectors 3 to form a single series circuit in which the direction of current flow, for a particular polarity of supply voltage, is indicated by the arrow heads shown on the conductors. The two patterns provided respectively on the surfaces of the base 1 are superimposed but displaced longitudinally one relative to the other so that, whereas transverse parts of the two waveforms are in register, the longitudinal parts are staggered. The two conductive patterns therefore form a number of virtual elementary coils each of which will produce a magnetic field perpendicular to the plane of the insulating base 1, the magnetic fields having alternately opposite senses.
In use the strip as described is rolled as shown in FIGURE 4 round the vidicon tube to form a cylinder, similar parts of the square wave overlapping. For example the lines marked X and Y on the figures overlap, the distance between X and Y representing the circumference of the cylinder. As is clear, the patterns are such that successive cycles of each waveform subtend the same angle at the axis of the cylinder. The parts of the conductive patterns which were transverse before rolling the base 1 to conform to a cylindrical surface now become parallel to the cylinder axis and form two diametrically opposite axially extending groups of conductors which are the active turns of two virtual saddle type coils. In other words the cylinder or cylindrical surface to which the rolled strip now conforms is of such diameter that alternate transverse parts of the conductors on each surface of the strip are substantially diametrically opposite.
The staggered parts of the printed conductors which were longitudinal before rolling now extend circumferentially and constitute the end turns of the coils. Leads 6 are connected to the terminals 4 on said strip. Insulation must be provided to prevent overlapping conductors from contacting, and this is provided either by coating the printed circuit with an insulating layer before rolling or by interleaving a separate strip of insulating material in the strip as it is rolled.
It is to be noted that in practice the scale of the pattern longitudinally will generally require to increase gradually along the strip to take account of the increasing diameter of the cyinder as the strip is rolled to fit round the tube to ensure that similar parts of the conductor waveform continue to register. The parts of the conductors which are longitudinal when the base 1 is flat need not be spaced, or need not all be spaced, to register exactly on rolling the base. The longitudinal spacing of the transverse parts of the patterns may be selected to provide a graded distribution of the axially extended conductors or to increase the angle subtended by the active conductors, when the pattern is rolled.
Locating holes may be provided along the strip so that with their aid the strip may be rolled with the required accuracy of registration of the conductors over each other.
The spacing of the conductors and their precise location may be adjusted to produce desired field patterns.
It will be appreciated that if the circuit element is intended to be used to provide scanning coils which fit round the conical portion of a cathode ray tube instead of a cylindrical portion as described above, the flexible base insulating material will be required to differ in shape from that illustrated. It will have the shape of an annular sector, and the rectangular waveform will have to be curved to follow the curvature of said strip. The term longitudinally continuous rectangular waveform used in the specification and claims is intended to describe such a waveform as well as the straight form shown in the figures.
A single strip may have two distinct sets of conductors printed on it, one for line deflection and the other for field deflection, so that both sets of scanning coils for a cathode ray tube may be constructed by rolling a single strip. Furthermore, if electrostatic screens are required between the tube and coils and/or between the two sets of coils these may be printed on the strip and the assembly for the tube against produced by a single rolling operation.
Therefore, from one aspect, the invention provides a circuit element which comprises a thin, flexible, elongated insulating member supporting overlapping conductive patterns on its two outer surface areas. Each pattern comprises a plurality of side-by-side conductors each conforming to a substantially rectangular waveform consisting of alternate longitudinal and transverse parts at right angles to each other with the longitudinal parts of the rectangular waveform on one surface being staggered with respect to the longitudinal parts of the rectangular waveform on the other surface. Further, means are provided connecting the ends of said conductors successively to one another to connect said conductors in a single series circuit, so that the current in the transverse parts of the plurality of conductors on one surface flows in the same direction as the current in the nearest transverse parts of the conductors on the other surface.
The base need not be composed entirely of insulating material or of a single strip. It may for example consist of more than one layer of insulating material. Moreover although the invention has been described in relation to coils for a television or like pick-up tube, it is applicable to cathode ray image reproducing tubes and the like. Further, the invention is not restricted in its application to scanning coils but may be applied to the formation of resolver coils, motor coils and the like.
What I claim is:
1. A circuit element comprising a flexible base which supports two overlapping and mutually insulated electrically conductive patterns, each pattern comprising a repetitive longitudinally continuous substantially rectangular waveform consisting of alternate longitudinal and transverse parts at right angles to each other, one pattern being displaced relative to the other so that the longitudinal parts of the respective waveforms are staggered so that the base can be rolled in such a way as to cause the patterns to form the equivalent of two diametrically opposed scanning coils wherein the transverse parts become parallel to the coil axisand the longitudinal parts extend circumferentially of the coils.
2. A circuit element according to claim 1 in which said patterns are adherent respectively on two surfaces of flexible insulating sheet material forming said base.
3. A circuit element according to claim 2 in which said patterns are adherent on the outer surfaces of a flexible insulating sheet.
4. A circuit element according to claim 1 in which each pattern includes a plurality of side-by-side conductors each of which conforms to the respective longitudinal waveform.
5. A circuit element according toclaim 1 in which the patterns are electrically connected together to form a single series circuit, so that the current in each transverse part of one waveform flows in the same direction as a current in the nearest transverse part of the other Waveform.
6. A circuit element according to claim 1 in which said patterns are such that successive cycles of each waveform subtend the same angle at the axis of the coil surface.
7. A coil comprising a flexible base which is rolled and which supports two overlapping and mutually insulated electrically conductive patterns each pattern comprising a repetitive circumferentially continuous waveform including circumferential parts and alternate parts transverse thereto meeting each other at right angles, one pattern being displaced relative to the other so that the circumferential parts of the respective waveforms are staggered so that the coil as rolled is equivalent to two diametrically opposed scanning coils wherein the parts transverse to the circumferential parts extend parallel to and longitudinally of the coil surface.
8. A coil comprising a flexible base which is rolled and which supports two overlapping and mutually insulated electrically conductive patterns each pattern comprising a repetitive circumferentially continuous rectangular waveform including circumferential parts and alternate parts transverse thereto meeting each other at right angles, one pattern being displaced relative to the other so that the circumferential parts of the respective waveforms are staggered so that the coil as rolled is equivalent to two diametrically opposed scanning coils wherein the parts transverse to the circumferential parts extend parallel to and longitudinally of the coil surface.
9. A circuit element comprising:
(a) a thin, flexible, elongated insulating member supporting mutually insulated overlapping conductive patterns on two surface areas,
(b) each pattern comprising a plurality of side-by-side conductors each conforming to a substantially rectangular waveform consisting of alternate longitudinal parts and transverse parts at right angels to each other,
(c) the longitudinal parts of the rectangular waveform on one surface area being staggered with respect to the longitudinal parts of the rectangular waveform on the other surface area,
((1) means-connecting the ends of said conductors successively one to another to connect said conductors in a single series circuit, so that the current in the transverse parts of the plurality of conductors on one surface area flows in the same direction as the current in the nearest transverse parts of the conductors on the other surface area.
10. A circuit element according to claim 9 in which said flexible insulating member is rolled to conform to a cylindrical surface wherein the transverse parts become parallel to the axis of such cylindrical surface and the longitudinal parts extend circumferentially of such cylindrical surface and said cylindrical surface being of such diameter that alternate transverse parts of the conductors on each surface area of the member are substantially diametrically opposite,
References Cited UNITED STATES PATENTS 2,831,136 4/1958 Hanlet 335299 XR 3,011,247 12/1961 Hanlet 336--200 XR 3,080,541 3/1963 Parker 336200 BERNARD A. GILHEANY, Primary Examiner US. Cl. X.R.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB32578/65A GB1157805A (en) | 1965-07-30 | 1965-07-30 | Improvements in or relating to Circuit Elements especially for use as Scanning Coils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3466580A true US3466580A (en) | 1969-09-09 |
Family
ID=10340825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US566648A Expired - Lifetime US3466580A (en) | 1965-07-30 | 1966-07-20 | Circuit elements especially for use as scanning coils |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3466580A (en) |
| GB (1) | GB1157805A (en) |
| NL (1) | NL6609877A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3701959A (en) * | 1971-03-24 | 1972-10-31 | Varian Associates | Microwave cavity resonator with printed circuit interior walls and modulation coils |
| US3702450A (en) * | 1971-05-11 | 1972-11-07 | Atomic Energy Commission | Printed circuit steering coils |
| US3736543A (en) * | 1972-03-31 | 1973-05-29 | Bendix Corp | Photoetched induction coil assembly |
| US3772587A (en) * | 1972-03-15 | 1973-11-13 | Inductosyn Corp | Position measuring transformer |
| US4540918A (en) * | 1981-08-27 | 1985-09-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Coil device for image pickup tube |
| US5245307A (en) * | 1989-04-18 | 1993-09-14 | Institut Dr. Friedrich Forster Pruferatebau Gmbh & Co. Kg | Search coil assembly for electrically conductive object detection |
| US5436536A (en) * | 1991-05-31 | 1995-07-25 | U.S. Philips Corporation | Display tube including a convergence correction device |
| US5477204A (en) * | 1994-07-05 | 1995-12-19 | Motorola, Inc. | Radio frequency transformer |
| US5571996A (en) * | 1995-01-17 | 1996-11-05 | Dell Usa, L.P. | Trace conductor layout configuration for preserving signal integrity in control boards requiring minimum connector stub separation |
| US20020072668A1 (en) * | 2000-12-13 | 2002-06-13 | Image-Guided Neurologics, Inc. | Microcoil construction |
| US20090002116A1 (en) * | 2005-12-19 | 2009-01-01 | Koninklijke Philips Electronics, N.V. | Interleaved Planar Transformer Primary and Secondary Winding |
| US20090072651A1 (en) * | 2007-09-13 | 2009-03-19 | Metal Industries Research & Development Centre | Slotless winding for rotating electric machine and manufacturing method thereof |
| US20090079277A1 (en) * | 2005-05-27 | 2009-03-26 | Namiki Seimitsu Houseki Kabushiki Kaisha | Cylindrical coil and cylindrical micromotor using the same |
| EP2043130A2 (en) | 2007-09-25 | 2009-04-01 | Ceos Corrected Electron Optical Systems GmbH | Multipole coils |
| DE102011106941A1 (en) | 2010-08-04 | 2012-02-09 | Robert Bosch Gmbh | Measuring unit for measuring position of e.g. receiver coil, has receiver coil groups with receiver coils that are switched with output voltages in series in measuring direction, where distance of receiver coils amounts to specific equation |
| DE102011106940A1 (en) | 2010-08-04 | 2012-02-09 | Robert Bosch Gmbh | Position measuring unit for measuring position of measuring scale i.e. broad strip, and sampling unit, has pairs of receiver coils switched in series manner, where distance between pairs of coils is integral multiple of pitch distance |
| DE102019115405A1 (en) * | 2019-06-06 | 2020-12-10 | Balluff Gmbh | Coil device and method of making a coil device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1266877A (en) * | 1984-09-13 | 1990-03-20 | Erich Rabe | Electronically commutated dc machine and use thereof |
| KR980005227A (en) * | 1996-06-12 | 1998-03-30 | 엄길용 | Double side film for film type deflection member of cathode ray tube |
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| US2831136A (en) * | 1953-09-24 | 1958-04-15 | Visseaux S A J | Electromagnetic deflecting means |
| US3011247A (en) * | 1954-01-15 | 1961-12-05 | Visseaux S A J | Method of manufacturing printed electrical windings |
| US3080541A (en) * | 1963-03-05 | parker |
-
1965
- 1965-07-30 GB GB32578/65A patent/GB1157805A/en not_active Expired
-
1966
- 1966-07-13 NL NL6609877A patent/NL6609877A/xx unknown
- 1966-07-20 US US566648A patent/US3466580A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3080541A (en) * | 1963-03-05 | parker | ||
| US2831136A (en) * | 1953-09-24 | 1958-04-15 | Visseaux S A J | Electromagnetic deflecting means |
| US3011247A (en) * | 1954-01-15 | 1961-12-05 | Visseaux S A J | Method of manufacturing printed electrical windings |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3701959A (en) * | 1971-03-24 | 1972-10-31 | Varian Associates | Microwave cavity resonator with printed circuit interior walls and modulation coils |
| US3702450A (en) * | 1971-05-11 | 1972-11-07 | Atomic Energy Commission | Printed circuit steering coils |
| US3772587A (en) * | 1972-03-15 | 1973-11-13 | Inductosyn Corp | Position measuring transformer |
| US3736543A (en) * | 1972-03-31 | 1973-05-29 | Bendix Corp | Photoetched induction coil assembly |
| US4540918A (en) * | 1981-08-27 | 1985-09-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Coil device for image pickup tube |
| US5245307A (en) * | 1989-04-18 | 1993-09-14 | Institut Dr. Friedrich Forster Pruferatebau Gmbh & Co. Kg | Search coil assembly for electrically conductive object detection |
| US5436536A (en) * | 1991-05-31 | 1995-07-25 | U.S. Philips Corporation | Display tube including a convergence correction device |
| US5477204A (en) * | 1994-07-05 | 1995-12-19 | Motorola, Inc. | Radio frequency transformer |
| US5571996A (en) * | 1995-01-17 | 1996-11-05 | Dell Usa, L.P. | Trace conductor layout configuration for preserving signal integrity in control boards requiring minimum connector stub separation |
| US20020072668A1 (en) * | 2000-12-13 | 2002-06-13 | Image-Guided Neurologics, Inc. | Microcoil construction |
| US7210223B2 (en) * | 2000-12-13 | 2007-05-01 | Image-Guided Neurologics, Inc. | Method of manufacturing a microcoil construction |
| US20070287903A1 (en) * | 2000-12-13 | 2007-12-13 | Image-Guided Neurologics, Inc. | Microcoil construction |
| US7774043B2 (en) | 2000-12-13 | 2010-08-10 | Medtronic, Inc. | Microcoil construction |
| US8146239B2 (en) | 2000-12-13 | 2012-04-03 | Medtronic, Inc. | Method of forming microcoil with conducting trace and attaching trace |
| US20090079277A1 (en) * | 2005-05-27 | 2009-03-26 | Namiki Seimitsu Houseki Kabushiki Kaisha | Cylindrical coil and cylindrical micromotor using the same |
| US7986063B2 (en) * | 2005-05-27 | 2011-07-26 | Namiki Seimitsu Houseki Kabushiki Kaisha | Cylindrical coil and cylindrical micromotor using the same |
| US20090002116A1 (en) * | 2005-12-19 | 2009-01-01 | Koninklijke Philips Electronics, N.V. | Interleaved Planar Transformer Primary and Secondary Winding |
| US7746208B2 (en) * | 2005-12-19 | 2010-06-29 | Koninklijke Philips Electronics N.V. | Interleaved planar transformer primary and secondary winding |
| US20090072651A1 (en) * | 2007-09-13 | 2009-03-19 | Metal Industries Research & Development Centre | Slotless winding for rotating electric machine and manufacturing method thereof |
| US20090084975A1 (en) * | 2007-09-25 | 2009-04-02 | Ceos Corrected Electron Optical Systems Gmbh | Multipole coils |
| DE102007045874A1 (en) * | 2007-09-25 | 2009-04-02 | Ceos Corrected Electron Optical Systems Gmbh | multipole |
| US7786450B2 (en) | 2007-09-25 | 2010-08-31 | Ceos Corrected Electron Optical Systems Gmbh | Multipole coils |
| EP2043130A2 (en) | 2007-09-25 | 2009-04-01 | Ceos Corrected Electron Optical Systems GmbH | Multipole coils |
| DE102011106941A1 (en) | 2010-08-04 | 2012-02-09 | Robert Bosch Gmbh | Measuring unit for measuring position of e.g. receiver coil, has receiver coil groups with receiver coils that are switched with output voltages in series in measuring direction, where distance of receiver coils amounts to specific equation |
| DE102011106940A1 (en) | 2010-08-04 | 2012-02-09 | Robert Bosch Gmbh | Position measuring unit for measuring position of measuring scale i.e. broad strip, and sampling unit, has pairs of receiver coils switched in series manner, where distance between pairs of coils is integral multiple of pitch distance |
| DE102019115405A1 (en) * | 2019-06-06 | 2020-12-10 | Balluff Gmbh | Coil device and method of making a coil device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1462535B2 (en) | 1972-07-27 |
| GB1157805A (en) | 1969-07-09 |
| NL6609877A (en) | 1967-01-31 |
| DE1462535A1 (en) | 1970-08-20 |
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