US2655605A - Alternating current switching device - Google Patents

Alternating current switching device Download PDF

Info

Publication number
US2655605A
US2655605A US256494A US25649451A US2655605A US 2655605 A US2655605 A US 2655605A US 256494 A US256494 A US 256494A US 25649451 A US25649451 A US 25649451A US 2655605 A US2655605 A US 2655605A
Authority
US
United States
Prior art keywords
gaps
switching device
priming
tubes
alternating current
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
US256494A
Other languages
English (en)
Inventor
Hartley George Clifford
Bray Frederick Harry
Hough George Hubert
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US2655605A publication Critical patent/US2655605A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/525—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using tubes in the switching stages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • 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
    • H03K17/52—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of gas-filled tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)

Definitions

  • This invention comprises means for establishing alternating current transmission connections
  • an alternatingcurrent switching device comprises, in combination a, gas discharge tube having a priminggap and/two or more'mutually independent gaps and in which discharge across said priming gap is sufficient to cause discharge across said' other gaps, two-wire transmission circuits connected respectively to; theianod'e s' and to the cathodes of a pair ofjsaid mutually-independent gaps and providedwith D.
  • C connectionsformaintaining the dischargfi via saidj'mutually independent gaps when the priming gap discharge is removed, so
  • current switching device comprises, in, combina' tion, a cold cathode gas discharge tube which has three or more pairs of anode-cathode gaps, one of which isa priming gap. and the others are workinggaps, and in whichdischarge across said priming gapis. sufiicient to cause discharge across said working gaps, two pairs of A. C. terminals, two transmission bridges which are each connected between a corresponding pair of A. C. terminals, and respectively the anodes and the cathodes of a pair of working gaps of said tube, and D. C. discharge maintenance current terminals connected to said transmission bridges whereby D. C. discharge maintaining potential is connected across said gaps in parallel, while A. C. currents are passed via said gaps in series.
  • Fig. 1 illustrates the basic principle and shows a single switching device for connecting an input or inlet A to an output or outlet B;
  • Fig. 2 shows an extension of the principle whereby means are provided for connecting an inlet to any of the "n outlets, each of which is similar to outlet B, Fig. 1 and to all of which the inlet is connected in multiple;
  • Fig. 3 shows a further extension in which any one of a number of inlets (only two are shown) can obtain connection to any one of a number of outlets I to N.
  • the switching device Fig. 1, consists of a gasfilled tube comprising a control gap CG and two mutually-independent working gaps GI and G2.
  • a two-wire inlet A is connected via a repeating frequencytransmission bridge, e. g.
  • coilIBQto;the anod'esoi G1,,G2'; while the;cor responding cathodes are connected via repeating coil ORG to out'let' B; may be replaced by any other usual form 01 voice the Stone r d e Y th'epriminggap discharges, ionisation occurs, and thetube sustains across the working gaps GI andjGZ' when the potentials on X and Y are removedfby virtue of +oe D.
  • C potentials connected'in parallel from the centre point of coil IRCtothe anodes ofigaps GI, and G2 and earth connected in, parallel'from the centre point of coil GRC to the cathodes of GI and G2.
  • FIG. 1 thus illustrates means for the, connection of. conversation. between two two wire voice channels, in auto telephone exchange system.
  • Fig.2 asing1e repeating coil IR-C is connected. to the inletA. and in multiple to the anode of. the working; gaps of a group of N gastubes.
  • Theanodes of the priming gaps are connected in multiple totaj single lnlet wire
  • the cathodes of the working gapsof each tube are connected respectively to correspondin individual repeating coils ORCI ORCN. while the priming gap cathodes are connected to individual outlet wires YI YN.
  • a potential is applied to wires X and Y2 causing ionisation to occur in the second tube.
  • the tube sustains and a V. F. transmission path is established between the inlet A and outlet 2.
  • Fig. 3 several arrays of tubes, each array similar to that of Fig. 2, have different inlets I, 2 each inlet being multipled to the anode pairs of all tubes of one array.
  • the outlets I, 2 N are multipled each to the cathode pairs of the corresponding tubes (e. g. I I, 2
  • the priming anodes of each horizontal array of tubes are multipled to a common priming inlet; XI, X2,
  • the priming cathodes of each vertical array of tubes are multipled to a common priming outlet Yl, Y2... YN.
  • connection can be established between any inlet and any outlet, e. g. by applying the correct potentials to control wires XI and Y2 connection
  • the repeatingcoils can be established from inlet 5 to outlet 2 via the second tube in the top horizontal array.
  • Each switching element is shown as having a control gap for initiating ionisation and two independent gaps for passing V. F. intelligence. There is no limitation to the number of these independent gaps so that in addition to two gaps used for passing V. F. other gaps may be used for miscellaneous control purposes. Four-wire switching could. also be provided in which case two pairs of speech gaps would be provided in each tube plus any additional gaps required for control purposes.
  • a number of such switching elements, each comprising a priming gap and a plurality of working gaps, may also be housed in the same envelope, ionisation being limited to one element without efiecting others.
  • An alternating current switching device comprising, in combination, a gas discharge tube having a priming gap and two or more mutually independent gaps and in which discharge across said priming gap is sufficient to cause discharge across said other gaps, two-wire transmission circuits connected respectively to anodes and to the cathodes of a pair of said mutually independent gaps and provided with D. C. connections for maintaining the discharge via said mutually independent gaps when the priming gap discharge is removed, so that said mutually independent gaps will pass alternating current between said transmission circuits.
  • An alternating current switching device comprising, in combination, a cold cathode gap discharge tube which has three or more pairs of anode-cathode gaps, one of which is a priming gap and the others are working gaps, and in which discharge across said priming gap is sufficient to cause discharge across said working gaps.
  • a switching device as claimed in claim 3 and comprising a plurality of said gas discharge tubes, and pairs of working gaps of all said tubes connected at one side in multiple to a single transmission bridge and at the other side to in dividual transmission bridges, a single multipled connection to said one side of the priming gaps of all said tubes, and individual connections to said other sides of said priming gaps.
  • a switching device as claimed in claim 4 and comprising a plurality of groups of gas discharge tubes, each group comprising the same number of tubes, a first set of transmission bridges equal in number to the number of tubes in each group, and each connected in multiple to the anode (or cathode) pairs of a set of tubes comprising a single tube per group having the same positions in the groups, e. g. all the first tubes of the groups, a single multipled priming connection to the anodes (or cathodes) of the priming gaps of each of the said sets of tubes, 2.
  • second set of transmission bridges equal in number to the number of groups and each connected in multiple to the cathode (or anode) pairs of all the tubes of the one'group, and a single multipled priming connection to the cathodes (or anodes) of the priming gaps of each of said groups of tubes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Alarm Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Gas-Filled Discharge Tubes (AREA)
US256494A 1950-11-16 1951-11-15 Alternating current switching device Expired - Lifetime US2655605A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB311426X 1950-11-16

Publications (1)

Publication Number Publication Date
US2655605A true US2655605A (en) 1953-10-13

Family

ID=10318647

Family Applications (1)

Application Number Title Priority Date Filing Date
US256494A Expired - Lifetime US2655605A (en) 1950-11-16 1951-11-15 Alternating current switching device

Country Status (6)

Country Link
US (1) US2655605A (de)
BE (1) BE507154A (de)
CH (1) CH311426A (de)
DE (1) DE902141C (de)
FR (2) FR1014597A (de)
GB (1) GB748482A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792525A (en) * 1952-02-23 1957-05-14 Gen Dynamics Corp Time selection circuit
US2837641A (en) * 1953-10-01 1958-06-03 Ibm Radio frequency actuated transfer relay
US2926298A (en) * 1952-10-29 1960-02-23 Nat Res Dev Electric switching arrangements
US3048821A (en) * 1957-04-04 1962-08-07 Cie Ind Des Telephones Electronically locking selection device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959739C (de) * 1954-12-14 1957-03-14 Siemens Ag Schaltungsanordnung in Fernmelde-, insbesondere Fernsprechanlagen zur Steuerung einer Schalteinrichtung durch zwei gleichzeitig brennende Gasentladungsroehren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792525A (en) * 1952-02-23 1957-05-14 Gen Dynamics Corp Time selection circuit
US2926298A (en) * 1952-10-29 1960-02-23 Nat Res Dev Electric switching arrangements
US2837641A (en) * 1953-10-01 1958-06-03 Ibm Radio frequency actuated transfer relay
US3048821A (en) * 1957-04-04 1962-08-07 Cie Ind Des Telephones Electronically locking selection device

Also Published As

Publication number Publication date
DE902141C (de) 1954-01-18
FR62147E (fr) 1955-06-10
BE507154A (de) 1953-04-10
GB748482A (en) 1956-05-02
FR1014597A (fr) 1952-08-19
CH311426A (fr) 1955-11-30

Similar Documents

Publication Publication Date Title
US2373134A (en) Signaling system
US2224677A (en) Signaling system
US2607891A (en) Translating circuits utilizing glow discharge devices
US2655605A (en) Alternating current switching device
US2267950A (en) Telephone system
US2779822A (en) Communication switching system employing gas tubes
US2608674A (en) Multicathode glow discharge device
US2542672A (en) Coordinate selecting and lockout circuit
GB650890A (en) Improvements in or relating to electric discharge tubes
US3546390A (en) Control equipment for multi-stage crosspoint arrangements
US2616627A (en) Counter circuit
US2739185A (en) Automatic telephone system
US2629020A (en) Coordinate selecting and lock-out circuit for interpolated speech transmission
US2629021A (en) Coordinate switching and lock-out circuit in interpolated speech receiving system
US2532125A (en) Selective station ringing system
US2960623A (en) Electrical pulse distributors
US1645972A (en) Telephone trunking scheme
US2609454A (en) Selecting and lockout circuit
US2411525A (en) Party line ringing system
US2261620A (en) Telephone ringing system
US3968454A (en) Signaling circuit
US2053605A (en) Selective signaling system
US2250264A (en) Telephone ringing system
US2875279A (en) Eight party full selective ringing system
US2774820A (en) Electric discharge tube circuits