EP0077240A1 - Aus gedrucktem Folienband gebildete Induktionsspule und Sender mit solcher Spule - Google Patents

Aus gedrucktem Folienband gebildete Induktionsspule und Sender mit solcher Spule Download PDF

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Publication number
EP0077240A1
EP0077240A1 EP82401758A EP82401758A EP0077240A1 EP 0077240 A1 EP0077240 A1 EP 0077240A1 EP 82401758 A EP82401758 A EP 82401758A EP 82401758 A EP82401758 A EP 82401758A EP 0077240 A1 EP0077240 A1 EP 0077240A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
ring
inductance
inductor
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82401758A
Other languages
English (en)
French (fr)
Other versions
EP0077240B1 (de
Inventor
Albert Boubouleix
Jacques Hermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0077240A1 publication Critical patent/EP0077240A1/de
Application granted granted Critical
Publication of EP0077240B1 publication Critical patent/EP0077240B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/06—Variable transformers or inductances not covered by group H01F21/00 with current collector gliding or rolling on or along winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/003—Printed circuit coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F2017/004—Printed inductances with the coil helically wound around an axis without a core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F2017/006—Printed inductances flexible printed inductors

Definitions

  • the invention relates to an inductor mainly used in circuits tuned on medium power transmitters.
  • Such inductances are usually produced by winding a conductor according to a helix defined by its pitch and its number of turns drawn on a generator cylinder.
  • this variation can be ensured by leaps, by switching taps arranged along the helix which makes it possible to change the number of turns contributing to the value of the inductance.
  • the transmitter has a remote control or an automatic tuning system
  • a continuous variation of the inductance value is necessary.
  • this variation is obtained by the displacement of the fulcrum of a cursor on the conductor by a screwing movement around the axis of the propeller.
  • the cursor is usually placed inside the propeller. It is in mechanical and electrical connection with a rotary conductor arranged along the axis of the propeller, on which it can move longitudinally.
  • a motor rotates the axial conductor, which results in the desired variation in the inductance.
  • Such devices have electrical drawbacks such as the presence in series of three friction contacts, one on the cursor in contact with the helical conductor, a second allowing sliding on the rotating axial conductor, a third to ensure the connection of this axial conductor with the fixed elements of the circuits associated with the device.
  • the unused turns of the propeller have a "dead end" effect capable of creating parasitic resonances.
  • the object of the invention is to overcome the aforementioned drawbacks.
  • Figure 6 represents the essential elements of the completed inductance.
  • FIG. 1 represents a printed flexible support surface 1 on which inclined copper strips 2 are obtained by implementing a known technique for manufacturing printed circuits consisting, for example, of attacking the surface portions left by chemical means free between the copper bands, after screen printing of the drawing representing the bands, using a protective ink.
  • the winding of the support 1 on an insulating cylinder 3, shown in Figure 2 superimposes the lines A and B of Figure 1 which restores the continuity of the helical conductor.
  • This continuity is materially produced along a strip C which extends the width of the support beyond the line A and which constitutes an overlap zone after winding of the support on the insulating cylinder 3.
  • FIG. 3 represents in section, the elements which ensure, in this overlap zone, the electrical continuity at the level of a copper strip 2 of the printed support and the mechanical fixing of this flexible support on the insulating cylinder 3.
  • the flexible support 1 used is a double-sided circuit.
  • the copper-colored parts of the first face form the turns 2 of the inductance.
  • the copper-colored part of the second face is limited to the surfaces facing the copper-colored parts of the first face at the level of the covering strip C, to form fixing zones by welding with the corresponding copper-colored parts of the first face, in order to '' ensure mechanical strength and facilitate wetting, by welding, of rivets 4 ensuring electrical continuity.
  • This process results in the construction of an inductor of fixed value and usable as it is.
  • This inductance is made adjustable by the installation of a slider according to FIG. 4.
  • This slider is constituted by a copper ring 5 of diameter slightly greater than that of the printed cylinder.
  • a crown, 6 and 7 composed of about fifty elastic contacts pressing on the cylinder along a circumference situated in a plane perpendicular to the axis of the cylinder.
  • These crowns are made of beryllium bronze from a strip 8 in FIG. 5 cut in the shape of a comb with large teeth 9.
  • each teeth are then preformed so that each forms one of the contacts of a crown, the latter being made up of a length of strip, fixed, by means of rivets, by its unformed part, to one end of the slider ring, over the entire length of its internal circumference.
  • a crown being made up of a length of strip, fixed, by means of rivets, by its unformed part, to one end of the slider ring, over the entire length of its internal circumference.
  • One of these crowns 6 ensures the connection between the cursor ring and the printed turns, by a number of contacts in parallel which is all the higher the larger the width of the printed part and the narrower the space between turns.
  • the ring is dimensioned in length so as to short-circuit, via the two crowns mounted at its ends, the unused turns, whatever its position between those giving the maximum and minimum values of the inductance.
  • the width and the pitch of the helical conductor can vary the along the cylinder.
  • the conductive strips 2 of FIG. 1 represent a example of this improvement.
  • the variation in the pitch of the helix formed by the conductive strip also makes it possible to improve the device by choosing an optimized law of variation of the inductance as a function of the movement of the ring along the printed cylinder.
  • Figure 6 shows the inductance terminated with the drive means of the slider ring.
  • the printed support 1 the helical drawing 2
  • the cursor ring 5 the contact rings 6 and 7.
  • the positions of the cursor 10 and of the rail 11 are recalled in the middle of the ring.
  • the sliding of the cursor ring along the cylinder carrying the printed inductance is ensured by two threaded rods 12, 13 arranged parallel and symmetrically with respect to the axis of the printed cylinder.
  • These rods have a thread consisting of a square section groove whose pitch is determined according to the friction and the desired speed of movement of the ring.
  • These rods act by screwing in a balanced manner on two nuts 14-15 made integral with the ring using insulating spacers 16, 17.
  • the rotation of the rods is ensured by gears 18, 19 integral with these rods and placed in a plane perpendicular to the axis of the cylinder printed at the end of it.
  • These gears are themselves driven synchronously by an intermediate gear 20 itself driven by a servo motor not shown in the figure.
  • the symmetrical action of the system ring drive allows precise positioning of the ring during changes in inductance value while maintaining the coincidence of its axis and that of the printed cylinder. This avoids any jamming effect and excessive crushing of the crown contacts, which could result from an asymmetrical drive of the ring.
  • variable inductance which has just been described is particularly applicable to the tuning circuits of the transmitters.
  • a maximum value of 11 micro Henry is obtained with 22 turns printed on a cylinder with a diameter of 70 mm and a length of 280 mm.
  • the admissible current is 10 amperes with an overvoltage coefficient greater than 200.
  • the resulting dissipated power is approximately 15 watts.
  • the printed circuit used to obtain these performances has a copper thickness greater than 100 microns.
  • the mechanical drive described allows a positioning time of less than 1.5 seconds.
  • the invention is not limited to the embodiment precisely described and produced.
  • various techniques of printed circuits can provide alternative embodiments.
  • the use, for example, of metallized holes can eliminate the use of rivets on the overlap zone C of FIG. 3.
  • the support cylinder can in another variant be made of insulating material treated to receive, directly by metallization of copper , drawing the inductor according to the known screen printing process, this avoiding the winding operation described above.
  • the electrical connection of the slider ring to the fixed elements of the associated circuits by means of the wiper 10 and of the rail 11 can be replaced in another alternative embodiment by a semi-rigid connection such as a copper strip, which eliminates a friction contact if the mechanical and electrical stabilities are deemed sufficient.
  • the embodiment then has only one contact by friction in series with the inductor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
EP19820401758 1981-10-06 1982-09-28 Aus gedrucktem Folienband gebildete Induktionsspule und Sender mit solcher Spule Expired EP0077240B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8118786 1981-10-06
FR8118786A FR2514190B1 (fr) 1981-10-06 1981-10-06 Inductance a ruban imprime et emetteur comportant une telle inductance

Publications (2)

Publication Number Publication Date
EP0077240A1 true EP0077240A1 (de) 1983-04-20
EP0077240B1 EP0077240B1 (de) 1985-08-14

Family

ID=9262787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820401758 Expired EP0077240B1 (de) 1981-10-06 1982-09-28 Aus gedrucktem Folienband gebildete Induktionsspule und Sender mit solcher Spule

Country Status (3)

Country Link
EP (1) EP0077240B1 (de)
DE (1) DE3265438D1 (de)
FR (1) FR2514190B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618122A1 (de) * 1986-05-30 1987-12-03 Johann Leonhard Huettlinger Abgleichbare filterspule
FR2659484A1 (fr) * 1990-03-12 1991-09-13 Alcatel Cable Inductance variable.
WO2009111165A1 (en) * 2008-02-18 2009-09-11 Advanced Magnet Lab, Inc. Helical coil design and process for direct fabrication from a conductive layer
WO2010118762A1 (de) * 2009-04-16 2010-10-21 Siemens Aktiengesellschaft Wicklung und herstellungsverfarhen einer wicklung
CN101425358B (zh) * 2008-08-08 2011-01-05 西安交通大学 雷电流波形形成电感

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2062720A (en) * 1934-07-24 1936-12-01 Machinerieen En App N Fabricke Regulating transformer
FR1225950A (fr) * 1958-04-03 1960-07-06 Atomic Energy Authority Uk Ensemble de noyau magnétique
FR1349306A (fr) * 1962-11-30 1964-01-17 Dispositif de connexions mobiles entre deux enroulements électriques fixes
DE2132095A1 (de) * 1971-07-12 1972-01-13 Denton J Ltd Elektrische Spulen und Verfahren zur Herstellung derselben
FR2287097A1 (fr) * 1974-10-02 1976-04-30 Rockwell International Corp Enroulement destine a creer un champ magnetique pour memoires a domaines magnetiques
FR2311481A1 (fr) * 1975-05-10 1976-12-10 Blaupunkt Werke Gmbh Bobine imprimee
DE2643657A1 (de) * 1976-09-28 1978-03-30 Siemens Ag Einrichtung zur veraenderung der induktivitaet einer in druckschaltungstechnik ausgefuehrten elektrischen spule
FR2379891A1 (fr) * 1977-02-03 1978-09-01 Videon Sa Element de bobinage pour transformateurs

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB674108A (de) * 1900-01-01
DE1111682B (de) * 1959-11-11 1961-07-27 Philips Patentverwaltung Abstimmanordnung mit einer etwa kreisfoermig ausgebildeten Leitung
CH447377A (de) * 1964-12-16 1967-11-30 Frako Kondensator Apparate Wicklung für Spulen in elektrischen Maschinen und Geräten
DE2205045A1 (de) * 1972-02-03 1973-08-09 Wilhelm Dr Ing Lepper Spulen fuer gleich- oder wechselstrom
US4045786A (en) * 1974-09-03 1977-08-30 Honeywell Information Systems Inc. Magnetic domain memory device having an improved drive coil arrangement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2062720A (en) * 1934-07-24 1936-12-01 Machinerieen En App N Fabricke Regulating transformer
FR1225950A (fr) * 1958-04-03 1960-07-06 Atomic Energy Authority Uk Ensemble de noyau magnétique
FR1349306A (fr) * 1962-11-30 1964-01-17 Dispositif de connexions mobiles entre deux enroulements électriques fixes
DE2132095A1 (de) * 1971-07-12 1972-01-13 Denton J Ltd Elektrische Spulen und Verfahren zur Herstellung derselben
FR2287097A1 (fr) * 1974-10-02 1976-04-30 Rockwell International Corp Enroulement destine a creer un champ magnetique pour memoires a domaines magnetiques
FR2311481A1 (fr) * 1975-05-10 1976-12-10 Blaupunkt Werke Gmbh Bobine imprimee
DE2643657A1 (de) * 1976-09-28 1978-03-30 Siemens Ag Einrichtung zur veraenderung der induktivitaet einer in druckschaltungstechnik ausgefuehrten elektrischen spule
FR2379891A1 (fr) * 1977-02-03 1978-09-01 Videon Sa Element de bobinage pour transformateurs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 12, no. 6, Novembre 1969, page 778, New York (USA); *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618122A1 (de) * 1986-05-30 1987-12-03 Johann Leonhard Huettlinger Abgleichbare filterspule
FR2659484A1 (fr) * 1990-03-12 1991-09-13 Alcatel Cable Inductance variable.
US5153548A (en) * 1990-03-12 1992-10-06 Alcatel Cable Variable inductor
WO2009111165A1 (en) * 2008-02-18 2009-09-11 Advanced Magnet Lab, Inc. Helical coil design and process for direct fabrication from a conductive layer
US7889042B2 (en) 2008-02-18 2011-02-15 Advanced Magnet Lab, Inc. Helical coil design and process for direct fabrication from a conductive layer
CN101425358B (zh) * 2008-08-08 2011-01-05 西安交通大学 雷电流波形形成电感
WO2010118762A1 (de) * 2009-04-16 2010-10-21 Siemens Aktiengesellschaft Wicklung und herstellungsverfarhen einer wicklung
US8643458B2 (en) 2009-04-16 2014-02-04 Siemens Aktiengesellschaft Winding and method for producing a winding

Also Published As

Publication number Publication date
DE3265438D1 (en) 1985-09-19
FR2514190A1 (fr) 1983-04-08
EP0077240B1 (de) 1985-08-14
FR2514190B1 (fr) 1988-06-17

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