US3093746A - Magnetostatic device - Google Patents

Magnetostatic device Download PDF

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Publication number
US3093746A
US3093746A US765474A US76547458A US3093746A US 3093746 A US3093746 A US 3093746A US 765474 A US765474 A US 765474A US 76547458 A US76547458 A US 76547458A US 3093746 A US3093746 A US 3093746A
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US
United States
Prior art keywords
relays
relay
windings
point
winding
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
US765474A
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English (en)
Inventor
Burstow Pierre
Monin Claude
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.)
Compagnie Industrielle des Telephones SA
Original Assignee
Compagnie Industrielle des Telephones 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.)
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Publication date
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Publication of US3093746A publication Critical patent/US3093746A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/80—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices
    • H03K17/81—Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors

Definitions

  • the present invention relates to a magnetostatic device by means of which it is possible to select a single member from a plurality of members having the same characteristics. The selection is effected by means of magnetostatic relays having no moving contacts. The device is applicable notably in automatic telephony and telegraphy and in remote control.
  • the present invention has for its object to'provide a selecting device of this type which employs magnetostatic relays and of which the operation is improved, while at the same time the cost is reduced, by virtue of the omission of the pilot relay.
  • the device according to the present invention is characterised by the fact that the relays are grouped in parallel and each feed through a feedback winding into a separate load, the free ends of which are connected to a common point, which is connected to the series-connected blocking windings of all the relays.
  • the separate resistances are so chosen that the strength of the current of one relay in the operated or active state is sufficient to prevent another relay from pulling up, but if two or more relays are simultaneously in the operated state the total current fed by the relays in the operated state is such that all the relays in the operated state return to the unoperated or inactive position. It is then the most rapidly acting relay which is the first to return to the operated state and which blocks the other relays in their inactive position, as long as it itself remains operated.
  • FIGURE 1 illustrates diagrammatically a device according to the invention
  • FIGURE 2 is the operating diagram of the device.
  • the dotted enclosures R R R R represent magnetostatic storage relays, for example of the type defined by applicants in French Patent No. 1,127,470 of May 27, 1955, and in the French Patent 1,160,506 filed on November 9, 1956, or in the corresponding United States Patent 2,946,896, for Magnetostatic Relay.
  • Each relay comprises at least one saturable magnetic circuit on which are wound an operating winding fed in series with a rectifier from an alternating-current source and control windings.
  • Each relay comprises an output circuit, S in the case of the relay R S in the case of the relay R S in the case of the relay R through which rectified current flows or does not flow depending upon the cur-rents applied to the control windings.
  • the saturable magnetic circuit for each relay is illustrated as an annular core and for the core associated with relay R there are illustrated wound thereon feedback winding e bias winding e primary control winding e holding winding e and blocking winding e in addition to an operating winding. Similar windings are provided for each of the other magnetic cores but with appropriate changes in the numerical subscripts designating particular windings.
  • the blocking windings e e e of the relays R R R R R are connected in series.
  • Any operated relay for example R feeds from the output point S a current which flows through the negative winding feedback e across the resistance r and y then through the series blocking windings e e e
  • An unoperated relay does not feed any current into the blocking circuit.
  • Any counterclockwise directed arrow adjacent a relay winding indicates that if a current flows through the winding it tends to bring the relay to the operated condition (positive ampere-turns).
  • a clockwise oriented arrow adjacent a winding indicates that if a current flows through the winding it tends to return the relay to the inactive state (negative ampere-turns)
  • the windings e e e e are bias windings of the various relays, which permit of bringing the latter to a common initial setting.
  • the windings e e e e are control windings which tend to bring the relays to the operated condition, while the windings e e 8 e are holding windings which tend to cause the operated relay to fall back or to maintain the relay in the inactive condition.
  • the resistance of all the series blocking windings e e e e is small in relation to the individual resistance of a relay, so that the potential of the common point is only slightly difierent from that of the second pole of the relay.
  • FIG. 1 is the operating diagram of a magnetostatic storage relay.
  • the control ampere-turns N l are plotted along the axis of the abscissae and the output current I is plotted along the axis of the ordinates.
  • FIG- URE 1 represents a number of ringing relays R R R forming a group in accordance with the arrangement indicated.
  • the bias windings of these various relays have set the operating point at the point 0. All these relays are therefore in the inactive state.
  • the relay R If the subscriber whose ringing relay is, for example, the relay R calls, there flows through his control winding e current which gives positive ampere-turns represented by the vector C
  • the operating point changes from the point to the point P and the relay R is operated or active and consequently supplies a current i.
  • the current i produces in each of the series windings e e e negative ampere-turns which are represented by a vector E in the case of the operated relay and by a vector B (of the same size as B for the inactive relays.
  • the operating point changes from the point P to the point P in the case of the operated relay, while in the case of the inactive relays the operating point changes from the point 0 to the point A
  • the ampere-turns produced which are represented by the'vector C will bring the operating point from point A to the point P but the relay R will not become active.
  • any operative relay blocks all the other relays of the group which are in the inactive state, as long as it itself remains operative.
  • each of them then supplies a current i and these currents will be summated to form a current 2i in the common part of the circuit, that is to say, in the series blocking windings e e e e
  • the ampere-turns produced are represented by vectors ZB in the case of the operative relays or 2B in the case of the inactive relays, which respectively change the operating points from P to the point 0 in the case of the operative relays and from the point 0 to the point A in the case of the. inactive relays. Therefore, the relays which are operative change to the inactive state.
  • a magnetostatic selecting device including a plurality of magnetostatic relays, each magnetostatic relay comprising a saturable magnetic circuit, a main operating winding wound on the magnetic circuit with an output connected thereto, and additional windings wound on the magnetic circuit including a control winding, a feedback winding and a blocking winding, each relay being susceptible to assume active and inactive states of operation respectively supplying different current values in its output circuit, means for applying a control current to the control windings of each of the relays to modify its state of operation, the feedback winding of each of the relays being connected in series in the output circuit of said relay, means connecting the output circuits of the relays to a common point, means connecting the blocking windings or said relays in series to said common point with said windings being so constructed and arranged that when all the relays are in the inactive state of operation a control current is applied to a control winding of one of the relays, said relay is placed in the active state of operation and its output circuit supplies a constant direct current in the blocking wind

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
US765474A 1957-10-28 1958-10-06 Magnetostatic device Expired - Lifetime US3093746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1077264X 1957-10-28

Publications (1)

Publication Number Publication Date
US3093746A true US3093746A (en) 1963-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
US765474A Expired - Lifetime US3093746A (en) 1957-10-28 1958-10-06 Magnetostatic device

Country Status (6)

Country Link
US (1) US3093746A (fr)
CH (1) CH355817A (fr)
DE (1) DE1077264B (fr)
FR (1) FR1186425A (fr)
GB (1) GB881759A (fr)
NL (2) NL232629A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249699A (en) * 1961-12-12 1966-05-03 Philips Corp Busy test arrangement for a telephone switching network
US3311708A (en) * 1962-07-27 1967-03-28 Philips Corp Means for identifying free channels in an automatic switching system
US3486035A (en) * 1964-06-15 1969-12-23 Cit Alcatel Magnetostatic relay

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1146130B (de) * 1960-05-09 1963-03-28 Siemens Ag Schaltungsanordnung fuer Fernmelde-, insbesondere Fernsprechanlagen mit ein oder zwei Teilnehmerstellen je Anschlussleitung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682615A (en) * 1952-05-28 1954-06-29 Rca Corp Magnetic switching and gating circuits
US2719773A (en) * 1953-11-20 1955-10-04 Bell Telephone Labor Inc Electrical circuit employing magnetic cores
US2772357A (en) * 1952-06-06 1956-11-27 Wang An Triggering circuit
US2946896A (en) * 1957-12-21 1960-07-26 Cie Ind Des Telephones Magnetostatic relays

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682615A (en) * 1952-05-28 1954-06-29 Rca Corp Magnetic switching and gating circuits
US2772357A (en) * 1952-06-06 1956-11-27 Wang An Triggering circuit
US2719773A (en) * 1953-11-20 1955-10-04 Bell Telephone Labor Inc Electrical circuit employing magnetic cores
US2946896A (en) * 1957-12-21 1960-07-26 Cie Ind Des Telephones Magnetostatic relays

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249699A (en) * 1961-12-12 1966-05-03 Philips Corp Busy test arrangement for a telephone switching network
US3311708A (en) * 1962-07-27 1967-03-28 Philips Corp Means for identifying free channels in an automatic switching system
US3486035A (en) * 1964-06-15 1969-12-23 Cit Alcatel Magnetostatic relay

Also Published As

Publication number Publication date
GB881759A (en) 1961-11-08
NL232629A (fr)
NL106290C (fr)
FR1186425A (fr) 1959-08-24
DE1077264B (de) 1960-03-10
CH355817A (fr) 1961-07-31

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