GB621621A - Vacuum tube voltmeter - Google Patents

Vacuum tube voltmeter

Info

Publication number
GB621621A
GB621621A GB10666/46A GB1066646A GB621621A GB 621621 A GB621621 A GB 621621A GB 10666/46 A GB10666/46 A GB 10666/46A GB 1066646 A GB1066646 A GB 1066646A GB 621621 A GB621621 A GB 621621A
Authority
GB
United Kingdom
Prior art keywords
april
electrons
grid
valve
vacuum tube
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
GB10666/46A
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
Publication of GB621621A publication Critical patent/GB621621A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0046—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00
    • G01R19/0076—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00 using thermionic valves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

621,621. Valve voitmeters. STANDARD TELEPHONES & CABLES, Ltd. April 6, 1946, No. 10666. Convention date, April 9, 1945. [Class 37] [Also in Group XL (a)] A valve voltmeter for measuring high - frequency voltage includes a thermionic rectifier 5, Fig. 1, in which the transit time of electrons from the cathode to the anode is reduced by giving the electrons a high initial velocity. Preferably, the grid 9 is given a high positive bias from source 10. Where a tetrode is used, the first grid is negatively biassed, Fig. 2 (not against an adjustable direct voltage 3 to give a null reading on an instrument 4.
GB10666/46A 1945-04-09 1946-04-06 Vacuum tube voltmeter Expired GB621621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US621621XA 1945-04-09 1945-04-09

Publications (1)

Publication Number Publication Date
GB621621A true GB621621A (en) 1949-04-13

Family

ID=22040607

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10666/46A Expired GB621621A (en) 1945-04-09 1946-04-06 Vacuum tube voltmeter

Country Status (1)

Country Link
GB (1) GB621621A (en)

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