GB757022A - Improvements in or relating to electric circuits comprising gas-filled glow discharge tubes - Google Patents

Improvements in or relating to electric circuits comprising gas-filled glow discharge tubes

Info

Publication number
GB757022A
GB757022A GB24226/52A GB2422652A GB757022A GB 757022 A GB757022 A GB 757022A GB 24226/52 A GB24226/52 A GB 24226/52A GB 2422652 A GB2422652 A GB 2422652A GB 757022 A GB757022 A GB 757022A
Authority
GB
United Kingdom
Prior art keywords
electrode
tube
priming
cathode
gap
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
GB24226/52A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB757022A publication Critical patent/GB757022A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00Gas-filled discharge tubes with solid cathode
    • H01J17/02Details
    • H01J17/30Igniting arrangements

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Discharge Lamp (AREA)

Abstract

757,022. Cold-cathode tubes. TELEFONAKTIEBOLAGET L. M. ERICSSON. Sept. 26, 1952 [Sept. 29, 1951], No. 24226/52. Class 39 (1). The ignition delay of a cold-cathode glow discharge tube is reduced by means of a preionizing electrode formed by an electrically conducting body with which a material, preferably glass, is associated in such a way as to be contiguous with said body and interposed between the latter and a further electrode with which the pre-ionizing electrode co-operates to form a priming gap. The tube is connected in a circuit in which the potential applied to the preionizing electrode is such that the current flowing through the material and across the priming gap is sufficient to decrease the ignition delay of the tube, but is not sufficient to lower appreciably the breakdown voltage of the main discharge gap of the tube. Fig. 2 shows a tube comprising an anode 1 and cathode 2 connected through a switch 11 to a voltage source 4. A pre-ionizing electrode 3 comprising a leadin wire 12 and a coating 9 of glass or other semiconductive material forms a priming gap with the cathode 2 and is supplied by a separate source 10. The coating 9 acts as a limiting resistance in the priming circuit. Alternatively the electrode 3 may form a priming gap with a further auxiliary electrode or with the anode. In a modified arrangement the electrode 3 is connected directly inside the tube to either the anode or the cathode, in which case the voltage source 4 also maintains the priming discharge. A trigger electrode may then be connected through a switch to the source 10. In the arrangement shown in Fig. 4 the preionizing electrode 3 comprises a band 12 of metal or carbon on the outer surface of the tube envelope, a portion 9 of the glass envelope itself forming the limiting resistance. The Specification describes a circuit including an electronic time meter used for investigating the effect of the pre-ionizing electrode on the ignition delay as compared with the effect of placing a small quantity of radio-active cobalt in a tube similar to that shown in Fig. 4 and having a filling of neon and 1 per cent argon at a pressure of 70 mm. of mercury.
GB24226/52A 1951-09-29 1952-09-26 Improvements in or relating to electric circuits comprising gas-filled glow discharge tubes Expired GB757022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE757022X 1951-09-29

Publications (1)

Publication Number Publication Date
GB757022A true GB757022A (en) 1956-09-12

Family

ID=20326616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24226/52A Expired GB757022A (en) 1951-09-29 1952-09-26 Improvements in or relating to electric circuits comprising gas-filled glow discharge tubes

Country Status (2)

Country Link
DE (1) DE1017708B (en)
GB (1) GB757022A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051987B (en) * 1957-03-22 1959-03-05 Philips Nv Glow discharge counter tubes with an anode and a number of main cathodes, according to which the discharge can burn as desired, and auxiliary electrodes and circuitry with such a tube arranged between the main cathodes
WO1980000898A1 (en) * 1978-10-20 1980-05-01 Univ Essex Pre-ionising arrangement for electrical discharge apparatus such as a gas laser
GB2225483B (en) * 1988-11-28 1992-10-21 Marconi Gec Ltd Electrical discharge apparatuses

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE545622C (en) * 1928-03-15 1932-03-03 Telefunken Gmbh Incandescent cathode tubes for electrostatic control of the electron flow
DE743904C (en) * 1932-10-18 1944-01-05 Osram G M B H Komm Ges Device for the ignition of an electric gas or vapor discharge tube
DE722823C (en) * 1939-06-11 1942-07-22 Sueddeutsche Telefon App Kabel Electron tubes with flat bottom
US2340799A (en) * 1942-10-19 1944-02-01 Bell Telephone Labor Inc Electronic discharge device
DE810793C (en) * 1944-07-29 1951-08-13 Philips Nv Electric discharge tubes with liquid or solid cathode and an ignition electrode
US2457891A (en) * 1945-01-12 1949-01-04 Andrew F Henninger Electron discharge device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051987B (en) * 1957-03-22 1959-03-05 Philips Nv Glow discharge counter tubes with an anode and a number of main cathodes, according to which the discharge can burn as desired, and auxiliary electrodes and circuitry with such a tube arranged between the main cathodes
WO1980000898A1 (en) * 1978-10-20 1980-05-01 Univ Essex Pre-ionising arrangement for electrical discharge apparatus such as a gas laser
JPS55501119A (en) * 1978-10-20 1980-12-11
US4387463A (en) 1978-10-20 1983-06-07 Rickwood Kenneth R Electrical discharge apparatus and a gas laser pumped by an electrical discharge through the gas
GB2225483B (en) * 1988-11-28 1992-10-21 Marconi Gec Ltd Electrical discharge apparatuses

Also Published As

Publication number Publication date
DE1017708B (en) 1957-10-17

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