GB653398A - Improvements in or relating to amplifying circuits embodying valves employing secondary electron emission - Google Patents

Improvements in or relating to amplifying circuits embodying valves employing secondary electron emission

Info

Publication number
GB653398A
GB653398A GB2906347A GB2906347A GB653398A GB 653398 A GB653398 A GB 653398A GB 2906347 A GB2906347 A GB 2906347A GB 2906347 A GB2906347 A GB 2906347A GB 653398 A GB653398 A GB 653398A
Authority
GB
United Kingdom
Prior art keywords
load
potential
positive potential
current
source
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
GB2906347A
Inventor
Henry Ibbotson
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB2906347A priority Critical patent/GB653398A/en
Priority to FR974434D priority patent/FR974434A/en
Publication of GB653398A publication Critical patent/GB653398A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes
    • H01J43/025—Circuits therefor

Landscapes

  • Amplifiers (AREA)

Abstract

653,398. Electron multipliers. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Oct. 31, 1947, No. 29063. [Class 40 (vi)] In an amplifier using an electron multiplier, in which the secondary emission electrode 6 requires a positive potential for operation but passes a negative current and the working potential is derived from the current flowing in a load impedance 18, operation is initiated from a source of positive potential over a device such as a gas-discharge tube 19. The current in the tube is discontinued or substantially reduced when the current in the load 18 is sufficient to maintain the electrode at working potential. As shown, the valve 1, which may be of the type described in Specification 601,966, [Group XL (a)], comprises an H.F. amplifying stage in a television receiver, in which the secondary-emission electrodes of similar preceding stages are also connected to the load 18 via lead 33. The load 18 is utilized as a source of positive potential for an amplifying stage 27, line and frame oscillators 31, 32, a sound reproducer 25 and by means of an adjustable tap, as a source of bias potential for the control electrode of the tube 29. The starting device may alternatively comprise a condenser, Fig. 2 (not shown), the time-constant with the load 18 being made long enough to maintain the secondary emission electrodes at a positive potential until the working condition is attained.
GB2906347A 1947-10-31 1947-10-31 Improvements in or relating to amplifying circuits embodying valves employing secondary electron emission Expired GB653398A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2906347A GB653398A (en) 1947-10-31 1947-10-31 Improvements in or relating to amplifying circuits embodying valves employing secondary electron emission
FR974434D FR974434A (en) 1947-10-31 1948-10-29 Circuit of thermionic lamps with secondary electronic emission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2906347A GB653398A (en) 1947-10-31 1947-10-31 Improvements in or relating to amplifying circuits embodying valves employing secondary electron emission

Publications (1)

Publication Number Publication Date
GB653398A true GB653398A (en) 1951-05-16

Family

ID=10285601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2906347A Expired GB653398A (en) 1947-10-31 1947-10-31 Improvements in or relating to amplifying circuits embodying valves employing secondary electron emission

Country Status (2)

Country Link
FR (1) FR974434A (en)
GB (1) GB653398A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013006117A1 (en) 2013-04-10 2014-10-16 R O S O M A - GmbH Rostocker Sondermaschinen- und Anlagenbau Method and device for controlling and gutting fish

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013006117A1 (en) 2013-04-10 2014-10-16 R O S O M A - GmbH Rostocker Sondermaschinen- und Anlagenbau Method and device for controlling and gutting fish

Also Published As

Publication number Publication date
FR974434A (en) 1951-02-22

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