GB1227865A - - Google Patents

Info

Publication number
GB1227865A
GB1227865A GB1227865DA GB1227865A GB 1227865 A GB1227865 A GB 1227865A GB 1227865D A GB1227865D A GB 1227865DA GB 1227865 A GB1227865 A GB 1227865A
Authority
GB
United Kingdom
Prior art keywords
grids
ionization
april
molybdenum
wire
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
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 filed Critical
Publication of GB1227865A publication Critical patent/GB1227865A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/04—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of thermionic cathodes

Landscapes

  • Measuring Fluid Pressure (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

1,227,865. Ionization manometers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 18 April, 1968 [21 April, 1967], No. 18417/68. Heading HID. Ionization manometer apparatus comprises an ionization manometer including a cathode 5 separated from a collector wire 15 by a substantially cylindrical anode grid 6 the open ends of which are screened by further grids 10, and electrical circuit means arranged to supply a negative-going voltage varying relative to the anode voltage to at least one of the further grids 10. The modulation grids 10 consist of molybdenum wires mounted in molybdenum rings. Two cathodes 5 are provided. The tube is otherwise as described in Specification 982,406. The apparatus provides a higher modulation factor than a prior arrangement in which a modulator wire was arranged inside the anode grid 6.
GB1227865D 1967-04-21 1968-04-18 Expired GB1227865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6705600A NL6705600A (en) 1967-04-21 1967-04-21

Publications (1)

Publication Number Publication Date
GB1227865A true GB1227865A (en) 1971-04-07

Family

ID=19799913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1227865D Expired GB1227865A (en) 1967-04-21 1968-04-18

Country Status (5)

Country Link
CH (1) CH477758A (en)
DE (1) DE1698148A1 (en)
FR (1) FR1569962A (en)
GB (1) GB1227865A (en)
NL (1) NL6705600A (en)

Also Published As

Publication number Publication date
DE1698148A1 (en) 1971-08-12
NL6705600A (en) 1968-10-22
FR1569962A (en) 1969-06-06
CH477758A (en) 1969-08-31

Similar Documents

Publication Publication Date Title
GB644418A (en) Improvements in and relating to ionization-type vacuum gauges
ES440664A1 (en) Fluorescent lamp with reduced wattage consumption having electrode shield with getter material
US3743876A (en) Hot-cathode ionization gauge having electrode means for shaping the electric field in the vicinity of the cathode
GB1226993A (en)
GB1141448A (en) Multiple-cathode x-ray triode tube
GB966469A (en) Surge protective device for cathode-ray tubes
GB1190424A (en) Electron Discharge Device for Generation of Spectral Radiation
GB1227865A (en)
GB1042266A (en) Gaseous cold cathode indicator tube
GB908524A (en) Improvements in or relating to indicator tubes
US2112136A (en) Electron discharge device
GB1382630A (en) Magnetrons
GB816901A (en) Ionization manometer
GB629881A (en) Improvements in electric discharge tubes comprising secondary emission electrodes
GB1013019A (en) Improvements in or relating to electron-optical image intensifiers
SE325340B (en)
GB982406A (en) Improvements in or relating to ionization manometers
US1868600A (en) Vacuum tube
GB1169800A (en) Improvements in or relating to High-Pressure Electric Discharge Lamps
GB929849A (en) Improvements relating to electron gun assemblies
GB1481944A (en) Flat envelope type fluorescent character-indicating tube
GB900363A (en) Improvements in or relating to signal storage tubes
GB936955A (en) Improvements in electric discharge tubes
GB1025168A (en) Improvements relating to cathode assemblies for electric discharge tubes
GB1138026A (en) A high-tension terminal, in particular for high voltage mercury vapour tubes

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee