US3127555A - Transformer circuits - Google Patents

Transformer circuits Download PDF

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Publication number
US3127555A
US3127555A US709383A US70938358A US3127555A US 3127555 A US3127555 A US 3127555A US 709383 A US709383 A US 709383A US 70938358 A US70938358 A US 70938358A US 3127555 A US3127555 A US 3127555A
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United States
Prior art keywords
quadripole
pots
input
coils
terminals
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.)
Expired - Lifetime
Application number
US709383A
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English (en)
Inventor
Honore Etienne
Torcheux Emile
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Thales SA
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CSF Compagnie Generale de Telegraphie sans Fil SA
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Filing date
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/09—Filters comprising mutual inductance
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/163—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division using a variable impedance controlled by one of the input signals, variable amplification or transfer function
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/30—Arrangements for performing computing operations, e.g. operational amplifiers for interpolation or extrapolation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1766—Parallel LC in series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1775—Parallel LC in shunt or branch path

Definitions

  • This patent discloses analog computer circuits comprising at least one pair of quadripoles.
  • Each quadripole has two input and two output terminals.
  • the output terminals of one quadripole are respectively connected to the input terminals of another quadripole and each quadripole forms a resonant circuit if its input or output ter minals are shorted.
  • All the quadripoles are, in addition, connected in parallel with respect to two common terminals and the whole circuit is resonant if all its external terminals which are not connected together are shorted.
  • such circuits are particularly adapted for performing elementary arithmetical operations on voltages which may be representative of any kind of magnitudes.
  • the quadripoies used in the disclosed circuits comprise variable capacitors whose value is varied in order to vary the respective coeflicients with which the applied voltages are affected.
  • the invention is not limited to analog computer circuits described in this patent, but is more generally concerned with all the circuits in which the quadripole of the invention can be used.
  • the invention provides a variable inductance device particularly suitable for use in the above circuits.
  • FIG. 1 illustrates a quadripole according to the invention
  • FIG. 2 schematically shows an embodiment of the variable induction device according to the invention
  • FIG. 3 shows an embodiment of the variable induction assembly according to the invention for use in the quadripole of FIG. 1;
  • FIG. 4 shows a variation of the same assembly
  • FIGS. 5 and 6 illustrate tripoles according to the invention
  • FIG. 7 shows a variable inductance device according to the invention for use in the tripoles of FIGS. 5 and 6.
  • FIG. 8 shows a preferred embodiment of the device of FIG. 4
  • FIG. 9 shows very diagrammatically a variation of a quadripole comprising devices of FIG. 8;
  • FIG. 10 illustrates an elementary computing circuit comprising a quadripole as shown in FIG. 1;
  • FIG. 11 shows a particular application of the quadripole according to the invention.
  • the quadripole illustrated in FIG. 1 operates on a predetermined frequency. It comprises two input terminals and 11b and two output terminals 12a and 12b. A fixed capacitor 13 is connected across input terminals 11a and 11b and a similar capacitor 14 is connected across output terminals 12a and 12b. The respective susceptance of these capacitors is K.
  • Terminals 11a and 11b are connected to output terminals 12a and 112% through respective variable inductances 15, the susceptance of which is -(K+X) and to terminals 12b and 12a through respective inductances in, the susceptance of which is -(KX).
  • K has a fixed value and the term X may vary between K and +K, while maintaining the same value in the four inductances of the quadripole.
  • the respective susceptances of each coil 15 or 16 vary from 0 to 2K.
  • FIG. 2 shows an embodiment of a variable inductance device provided by the invention and particularly suitable for use in the quadripole according to the invention.
  • This device comprises a conventional high frequency coil pct 11%, wherein coil W1 is located. Opposite the free face of the winding, is placed a plane metal plate 102, which is movable perpendicularly to its plane and along the core axis. The induction flux of winding 101 closes through plate 102. Any change in the position of this plate will cause a variation of the air-gap and consequently, of the reluctance of the magnetic circuit and thus of the impedance of coil 101.
  • the susceptance of the inductance coil will have substantially the value: S: -Ne, where e is the air gap, and N a constant, independent of e.
  • FIG. 3 shows a first example of an arrangement of inductance coils adapted for use in the quadripole of FIG. 1.
  • a first pair of windings 15 and 16 are respectively placed in pots 104 and 104', similar to pot 103 in FIG. 2.
  • a plate 21 is placed between pots 104 and 104.
  • the respective induction fluxes of both windings 15 and 16 closing therethrough.
  • the second pair of windings 15 and 16 forms a similar assembly as in FIG. 3.
  • a system of rods 1W5 enables plates 21 to be moved simultaneously in such a manner that air gaps 10421, 10421 remain respectively equal in the two assemblies.
  • the coil terminals are respectively connected to input terminals 11a and 11b of the quadripole and to its output terminals 12a and 12b, as shown in FIG. 1.
  • FIGS. 5 and 6 represent tripoles or quadripoles with one input and one output terminal grounded and which can be used in lieu of the quadripole of FIG. 1, provided the basic condition that the circuit is resonant with the input or the output terminals shorted is fulfilled.
  • a fixed capacitor 13a is connected between terminal 11a and ground and a capacitor 14a of the same susceptance 2K is connected between the terminal 12a and 'grou'nd.
  • Coils 15 and 16 are connected in the same manner and have the same value as in FIG. 1.
  • FIG. 6 is an alternative embodiment of the tripole of FIG. 5. It comprises the same elements as those of FIG. 5, except that a capacitor 19 is connected across terminals 11a and 12a, and that the susceptance of capacitors 13b, 14b and 19 is K.
  • FIG. 7 shows how the arrangement of FIG. 3 can be i applied to the quadripoles in FIGS. 5 and 6. As may be seen from FIG. 7, one of the pots of the right hand assembly has been eliminated since there is only one coil in FIGS. 5 and 6. For the remainder, FIG. 3 and FIG. 7 are entirely similar.
  • FIG. 8 shows a preferred embodiment of the variable inductance device of FIG. 2 and more precisely of the variation of this device shown in FIG. 4.
  • This device comprises an envelope 5t) made of a non magnetic material.
  • Theenvelope comprises a cylinder 51 and two end covers 52.
  • a shaft 53 also made of a non magnetic material, is positioned within the envelope for axial movement therein. his provided at both ends with journals 54, which are supported with sumcient clearance in bearings 55, provided in the envelope 50 are mounted two symmetrical magnetic assemblies 56 and 57, corresponding to pots 104 and 104' of FIG. 4 respectively.
  • Each assembly comprises a fixed magnetic piece 58, having a central hub 59, and a fixed magnetic ring 60, spaced apart from hub 59.
  • the two rings 60 are located armatures 63 and 64 which are fixed on shaft 53 and movable therewith, providing variable width air gaps 69 in cooperation with hubs 59. Elements 63 and 64 are spaced by an air gap and are integrally connected by a non magnetic joint 65. Windings 67, corresponding to windings 15 of FIG. 4, are located in the space limited by fixed magnetic pieces 58 and 60 and the movable armature 63. This space is closed by a magnetic ring 69. Similar windings 66 are provided in the same way in assembly 57.
  • an air gap 69 the width of which varies as shaft 53 moves to and fro, i.e. towards hub 59 and away from hub 59, is entirely within the coil and the entire extent thereof is traversed by the magnetic flux.
  • the dispersion flux is small and is, in addition, substantially constant, whatever the position of the armatures 63 and 64. It should also be noted that the respective magnetic fluxes of the two assemblies 56 and 57 are thoroughly separated by non magnetic pieces or by air gaps.
  • the action of the constant dispersion flux can be balanced by small capacitors 17 and 18, inserted in series with the corresponding induction coils 15 and 16.
  • FIG. 10 Such a circuit is shown in FIG. 10. It comprises the quadripole 1 of FIG. 1 and a quadripole 2 of the type used in the above patent, i.e. having two fixed capacitors 35 and two fixed coils 34.
  • the output capacitor 14 of quadripole 1 and the input inductance 34 of quadripole 2 may form an antiresonant circuit, tuned to frequency f,,, and may thus be eliminated. Therefore they are shown in dotted lines.
  • FIG. 11 shows a very interesting use of the quadripole according to the invention, more particularly in the low frequency range.
  • K and X have the same value as above.
  • This device thus enables the power absorbed in the load 21 to be varied simply by varying the value of X.
  • capacitors 13 and 14 of the quadripoles and tripoles according to the invention may be substituted by tuned dipoles, as explained in our application Improvements in Analog Computer Circuits Serial No. 709,391, now abandoned, filed the same date as the present application.
  • a quadripole for computer and transformer circuits comprising a pair of input and output terminals, connecting means for applying an alternating electrical magnitude having a predetermined frequency between said input terminals, first and second capacitors of equal value connected across said input and output terminals respectively, a first pair of variable inductance coils for connecting one input terminal to each output terminal, a second pair of variable inductance coils for connecting the other input terminal to each output terminal, means for varying the inductance of said coils, the sum of the susceptances of said coils remaining constant and being at said predetermined frequency equal to K, K having a fixed value, said quadripole also including two pairs of coaxial hollow ringshaped induction pots, each of the pots having two polar surfaces, a shaft extending and movable along the common axis of the pots and carrying two magnetic armatures respectively associated with said pots, said armatures being magnetically insulated from each other and each having two polar surfaces respectively facing the polar surfaces of the respective pots and separated there
  • a quadripole according to claim 1 further comprising capacitors respectively connected in series with said coils for balancing the respective constant dispersion fluxes thereof.
  • a circuit according to claim 2 comprising means for grounding one of said input and one of said output terminals, said quadripole forming a resonant circuit with one of said pairs of terminal shorted.
  • a circuit according to claim 3 comprising a further capacitor connecting one of said input terminals to one of said output terminals, said further capacitor and said capacitors having the same value.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Particle Accelerators (AREA)
US709383A 1957-01-18 1958-01-16 Transformer circuits Expired - Lifetime US3127555A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR729818 1957-01-18

Publications (1)

Publication Number Publication Date
US3127555A true US3127555A (en) 1964-03-31

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Application Number Title Priority Date Filing Date
US709383A Expired - Lifetime US3127555A (en) 1957-01-18 1958-01-16 Transformer circuits

Country Status (4)

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US (1) US3127555A (enrdf_load_stackoverflow)
DE (1) DE1184121B (enrdf_load_stackoverflow)
FR (1) FR1164845A (enrdf_load_stackoverflow)
NL (1) NL224129A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260925A (en) * 1960-08-08 1966-07-12 Csf Transformer devices for electrical computers and other applications
US3280398A (en) * 1963-01-10 1966-10-18 Marie Georges Robert Pierre Electric motor and winding circuit arrangements
US3421121A (en) * 1965-08-13 1969-01-07 Hughes Aircraft Co Wide bandwidth phase equalization filter network
US3529233A (en) * 1968-10-08 1970-09-15 Adams Russel Co Inc Lattice type phase shifting network
US3691546A (en) * 1970-04-29 1972-09-12 Ametek Inc Variable reluctance transmitter
US5093614A (en) * 1990-10-29 1992-03-03 International Business Machines Corporation Three phase delta reference transformer
US8487716B1 (en) 2012-09-19 2013-07-16 Werlatone, Inc. Single-ended phase-shift network
US8542080B2 (en) 2011-04-08 2013-09-24 Werlatone, Inc. All-pass network

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1918353A (en) * 1932-11-28 1933-07-18 Arthur B Utley Sewer cleaner
US2395515A (en) * 1942-11-21 1946-02-26 Bell Telephone Labor Inc Frequency detecting network
US2581359A (en) * 1947-03-21 1952-01-08 Clark James Electromagnetic pressure sensitive device
US2643869A (en) * 1948-01-15 1953-06-30 Clark James Accelerometer
US2679628A (en) * 1949-12-15 1954-05-25 Gen Electric Co Ltd Apparatus for measuring mechanical quantities
US2758288A (en) * 1952-01-29 1956-08-07 Servomechanisms Inc Electromechanical transducer
US2785853A (en) * 1950-05-06 1957-03-19 Honore Etienne Augustin Henri Electric analog computer and similar circuits
US2873431A (en) * 1954-07-12 1959-02-10 Hallicrafters Co Variable inductor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1918353A (en) * 1932-11-28 1933-07-18 Arthur B Utley Sewer cleaner
US2395515A (en) * 1942-11-21 1946-02-26 Bell Telephone Labor Inc Frequency detecting network
US2581359A (en) * 1947-03-21 1952-01-08 Clark James Electromagnetic pressure sensitive device
US2643869A (en) * 1948-01-15 1953-06-30 Clark James Accelerometer
US2679628A (en) * 1949-12-15 1954-05-25 Gen Electric Co Ltd Apparatus for measuring mechanical quantities
US2785853A (en) * 1950-05-06 1957-03-19 Honore Etienne Augustin Henri Electric analog computer and similar circuits
US2758288A (en) * 1952-01-29 1956-08-07 Servomechanisms Inc Electromechanical transducer
US2873431A (en) * 1954-07-12 1959-02-10 Hallicrafters Co Variable inductor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260925A (en) * 1960-08-08 1966-07-12 Csf Transformer devices for electrical computers and other applications
US3280398A (en) * 1963-01-10 1966-10-18 Marie Georges Robert Pierre Electric motor and winding circuit arrangements
US3421121A (en) * 1965-08-13 1969-01-07 Hughes Aircraft Co Wide bandwidth phase equalization filter network
US3529233A (en) * 1968-10-08 1970-09-15 Adams Russel Co Inc Lattice type phase shifting network
US3691546A (en) * 1970-04-29 1972-09-12 Ametek Inc Variable reluctance transmitter
US5093614A (en) * 1990-10-29 1992-03-03 International Business Machines Corporation Three phase delta reference transformer
US8542080B2 (en) 2011-04-08 2013-09-24 Werlatone, Inc. All-pass network
US8487716B1 (en) 2012-09-19 2013-07-16 Werlatone, Inc. Single-ended phase-shift network

Also Published As

Publication number Publication date
NL224129A (enrdf_load_stackoverflow)
DE1184121B (de) 1964-12-23
FR1164845A (fr) 1958-10-14

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