US3466580A - Circuit elements especially for use as scanning coils - Google Patents

Circuit elements especially for use as scanning coils Download PDF

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Publication number
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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United States
Prior art keywords
conductors
parts
pattern
coils
transverse
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Expired - Lifetime
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US566648A
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English (en)
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Eric William Bull
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EMI Ltd
Electrical and Musical Industries Ltd
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EMI Ltd
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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,

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  • Coils Or Transformers For Communication (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
US566648A 1965-07-30 1966-07-20 Circuit elements especially for use as scanning coils Expired - Lifetime US3466580A (en)

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)

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US3466580A true US3466580A (en) 1969-09-09

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GB (1) GB1157805A (pm)
NL (1) NL6609877A (pm)

Cited By (17)

* Cited by examiner, † Cited by third party
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 (de) 2007-09-25 2009-04-01 Ceos Corrected Electron Optical Systems GmbH Multipolspulen
DE102011106940A1 (de) 2010-08-04 2012-02-09 Robert Bosch Gmbh Positionsmesseinrichtung mit Randkompensation
DE102011106941A1 (de) 2010-08-04 2012-02-09 Robert Bosch Gmbh Induktive Positionsmesseinrichtung mit mehr als zwei Empfängerspulengruppen
DE102019115405A1 (de) * 2019-06-06 2020-12-10 Balluff Gmbh Spulenvorrichtung und Verfahren zur Herstellung einer Spulenvorrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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 (ko) * 1996-06-12 1998-03-30 엄길용 음극선관의 필름형 편향부재용 양면 필름

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
DE102007045874A1 (de) * 2007-09-25 2009-04-02 Ceos Corrected Electron Optical Systems Gmbh Multipolspulen
US20090084975A1 (en) * 2007-09-25 2009-04-02 Ceos Corrected Electron Optical Systems Gmbh Multipole coils
US7786450B2 (en) 2007-09-25 2010-08-31 Ceos Corrected Electron Optical Systems Gmbh Multipole coils
EP2043130A2 (de) 2007-09-25 2009-04-01 Ceos Corrected Electron Optical Systems GmbH Multipolspulen
DE102011106940A1 (de) 2010-08-04 2012-02-09 Robert Bosch Gmbh Positionsmesseinrichtung mit Randkompensation
DE102011106941A1 (de) 2010-08-04 2012-02-09 Robert Bosch Gmbh Induktive Positionsmesseinrichtung mit mehr als zwei Empfängerspulengruppen
DE102019115405A1 (de) * 2019-06-06 2020-12-10 Balluff Gmbh Spulenvorrichtung und Verfahren zur Herstellung einer Spulenvorrichtung

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Publication number Publication date
NL6609877A (pm) 1967-01-31
DE1462535B2 (de) 1972-07-27
GB1157805A (en) 1969-07-09
DE1462535A1 (de) 1970-08-20

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