GB665819A - Improvements in or relating to gaseous electric discharge devices and circuits therefor - Google Patents

Improvements in or relating to gaseous electric discharge devices and circuits therefor

Info

Publication number
GB665819A
GB665819A GB29547/46A GB2954746A GB665819A GB 665819 A GB665819 A GB 665819A GB 29547/46 A GB29547/46 A GB 29547/46A GB 2954746 A GB2954746 A GB 2954746A GB 665819 A GB665819 A GB 665819A
Authority
GB
United Kingdom
Prior art keywords
pulse
bus
bar
tube
rectifier
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
Application number
GB29547/46A
Inventor
Alec Harley Reeves
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to ES0180323A priority Critical patent/ES180323A1/en
Publication of GB665819A publication Critical patent/GB665819A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/15—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors
    • H03K5/15013—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors with more than two outputs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/04—Distributors combined with modulators or demodulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/04—Distributors combined with modulators or demodulators
    • H04J3/042—Distributors with electron or gas discharge tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/007—Sequential discharge tubes

Abstract

665,819. Automatic exchanges. STANDARD TELEPHONES & CABLES, Ltd. Sept. 26, 1947 [Oct. 3, 1946], No. 29547/46. Class 40 (iv). [Also in Groups XL (b) and XL (c)] Pulse distributer circuits comprising cold cathode gas-filled sequence electric discharge tubes as described in Specification 639,827. [Group XL (a)], can be used in place of the cathode-ray tube distributers in the automatic exchange system described in Specification 632,375. The sequence tube 1 fires under the control of a master pulse generator 45 synchronized with the pulses in the bus-bar 46. Each cathode of the tube is connected via a transformer 20 to a gate circuit 23 which is connected through a condenser 34 to the busbar and through a low-pass filter 32 to output terminals 36. The gate circuit comprises a rectifier 27 biased to cut-off by a battery 31. The positive pulses from the bus-bar are of insufficient amplitude to open the rectifier in any gate circuit except when aided by a pulse from the associated tube gap. It is arranged that the pulse from a cathode slightly leads the corresponding bus-bar pulse and that the pulse overlap terminates with the tube pulse. The bus-bar pulse may be modulated in time or duration, but the tube pulse has constant timing, so that the period during which the rectifier is open commences at the varying time of the bus-bar pulse and ends with the constant trailing edge of the tube pulse, and a pulse flows in the rectifier circuit modulated in conformity with the bus-bar pulse modulation. Condenser 29 and low-pass filter 32 suppress high-frequency components and harmonics so that the output at terminals 36 contains substantially the modulating frequency only. In a modified circuit, a transformer is included in series in the rectifier circuit and its secondary connected to the bus-bar, the original bus-bar connection consisting of condenser 34 and resistance 35 being diverted to a pulseshaper which modifies the pulses of the master pulse generator to saw-tooth waveform before they are applied to the gate circuit. Various channels connected to terminals 36 of the various gate circuits are thus enabled to modulate an individual pulse in pulse trains applied to the bus-bar. Specification 665,817, [Group XIX], also is referred to.
GB29547/46A 1946-10-03 1946-10-03 Improvements in or relating to gaseous electric discharge devices and circuits therefor Expired GB665819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0180323A ES180323A1 (en) 1946-10-03 1947-10-30 IMPROVEMENTS IN OR RELATED TO GASEOUS DISCHARGE DEVICES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB275283X 1946-10-03

Publications (1)

Publication Number Publication Date
GB665819A true GB665819A (en) 1952-01-30

Family

ID=10261053

Family Applications (2)

Application Number Title Priority Date Filing Date
GB29546/46A Expired GB666394A (en) 1946-10-03 1946-10-03 Improvements in or relating to gaseous electric discharge devices and circuits therefor
GB29547/46A Expired GB665819A (en) 1946-10-03 1946-10-03 Improvements in or relating to gaseous electric discharge devices and circuits therefor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB29546/46A Expired GB666394A (en) 1946-10-03 1946-10-03 Improvements in or relating to gaseous electric discharge devices and circuits therefor

Country Status (6)

Country Link
US (2) US2505006A (en)
BE (2) BE479961A (en)
CH (2) CH275283A (en)
FR (3) FR58461E (en)
GB (2) GB666394A (en)
NL (2) NL78125C (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL104371C (en) * 1948-06-11
US2687496A (en) * 1949-07-15 1954-08-24 Ibm Gaseous discharge register
US2575517A (en) * 1950-01-21 1951-11-20 Northrop Aircraft Inc Glow tube counting circuit
US2679978A (en) * 1950-01-25 1954-06-01 Nat Res Dev Pulse scaling system
US2646523A (en) * 1950-01-28 1953-07-21 Bell Telephone Labor Inc Multicathode gaseous discharge device
US2675504A (en) * 1950-03-31 1954-04-13 Ibm Gaseous discharge register
US2641725A (en) * 1950-06-30 1953-06-09 Int Standard Electric Corp Electronic discharge tube
US2723365A (en) * 1950-12-01 1955-11-08 Northrop Aircraft Inc Sectional read-out tube and circuit
US2740921A (en) * 1950-12-12 1956-04-03 Int Standard Electric Corp Electric discharge tubes and circuits therefor
US2685049A (en) * 1951-10-31 1954-07-27 Ibm Coincidence circuit
US2848647A (en) * 1954-06-23 1958-08-19 Burroughs Corp Multiplexing system
US2917717A (en) * 1955-02-04 1959-12-15 Ericsson Telefon Ab L M Modulator for amplitude modulating a pulse train
US2920142A (en) * 1955-06-06 1960-01-05 Itt Pulse communication system
DE1041078B (en) * 1955-09-07 1958-10-16 Albert Jefferies Baggott Circuit arrangement for storing and forwarding pulses
US2919436A (en) * 1956-03-15 1959-12-29 Burroughs Corp Multiplex measuring device
NL7208319A (en) * 1972-06-17 1973-12-19

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE550856C (en) * 1929-03-07 1932-05-23 Otto Von Bronk Device for electrical image transmission
US2404920A (en) * 1940-09-27 1946-07-30 Research Corp Electronic discharge apparatus
US2432608A (en) * 1941-03-28 1947-12-16 Ncr Co Multianode, gas-filled discharge device
GB556079A (en) * 1942-03-12 1943-09-20 Standard Telephones Cables Ltd Improvements relating to multi-channel electrical communication systems
US2375830A (en) * 1942-03-31 1945-05-15 Raytheon Mfg Co Device for producing successive electrical impulses
US2465355A (en) * 1943-01-27 1949-03-29 George W Cook Wave analyzer
US2466467A (en) * 1943-02-25 1949-04-05 Ncr Co Communication system
US2427533A (en) * 1943-12-31 1947-09-16 Research Corp Electronic switching device
US2443407A (en) * 1947-06-18 1948-06-15 Jr Nathaniel B Walcs Gaseous discharge device
US2575370A (en) * 1949-06-25 1951-11-20 Bell Telephone Labor Inc Cold cathode gaseous discharge device

Also Published As

Publication number Publication date
CH283214A (en) 1952-05-31
NL78125C (en)
FR58460E (en) 1953-11-30
US2645680A (en) 1953-07-14
FR957838A (en) 1950-02-25
CH275283A (en) 1951-05-15
BE479961A (en)
US2505006A (en) 1950-04-25
NL78124C (en)
FR58461E (en) 1953-11-30
GB666394A (en) 1952-02-13
BE479962A (en)

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