GB609845A - Improvements in or relating to circuits for electric discharge tubes - Google Patents

Improvements in or relating to circuits for electric discharge tubes

Info

Publication number
GB609845A
GB609845A GB8121/46A GB812146A GB609845A GB 609845 A GB609845 A GB 609845A GB 8121/46 A GB8121/46 A GB 8121/46A GB 812146 A GB812146 A GB 812146A GB 609845 A GB609845 A GB 609845A
Authority
GB
United Kingdom
Prior art keywords
anode
control
grid
voltage
plate
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
GB8121/46A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Philips Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB609845A publication Critical patent/GB609845A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0011—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying tubes of the amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes

Abstract

609,845. Electron beam valves. PHILIPS LAMPS, Ltd. March 15, 1946, No. 8121. Convention date; July 19, 1941. [Class 39 (i)] [Also in Group XL (c)] In an amplifying circuit comprising a discharge tube having control and screen grids, deflecting plates and an anode, the signal voltage is applied to the control grid, and a second control by a lowfrequency or gain control voltage, is effected by utilizing both the control grid and deflecting plate characteristics. The Figure shows a discharge tube having a cathode 2, control grid 3, screen grid 4, anode 5 and deflection plates 6 and 7, the latter being connected to the screen grid 4. A plate 8, preferably connected to the anode, is provided to improve the electron distribution, and a low potential body 9 is provided to reduce secondary emission phenomina between the anode and positive deflection plate. The incoming signal and a slowly varying direct voltage, such as a gain control voltage, are applied to the control grid 3. The screen grid circuit includes a resistor 12 and a highfrequency byepass condenser 17, so that an amplified gain control voltage, but not signal voltage, is applied to deflector plate 7. Deflector plate 7 acts also as a collector electrode, so that the output from anode 5 is effectively controlled by the deflecting plate action in response to the low-frequency control voltage. The frequency of the signal input should be at least five times that of the low-frequency control voltage.
GB8121/46A 1941-07-19 1946-03-15 Improvements in or relating to circuits for electric discharge tubes Expired GB609845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL609845X 1941-07-19

Publications (1)

Publication Number Publication Date
GB609845A true GB609845A (en) 1948-10-07

Family

ID=19788060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8121/46A Expired GB609845A (en) 1941-07-19 1946-03-15 Improvements in or relating to circuits for electric discharge tubes

Country Status (2)

Country Link
US (1) US2473754A (en)
GB (1) GB609845A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE505422A (en) * 1950-08-25
US3131356A (en) * 1959-12-16 1964-04-28 Hazeltine Research Inc Nonlinear amplifier for providing output which varies exponentially as a function of input signal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2219902A (en) * 1934-12-21 1940-10-29 Rca Corp Cathode ray tube oscillograph apparatus
US2205069A (en) * 1935-12-16 1940-06-18 Rca Corp Thermionic valve and circuit
CH200818A (en) * 1936-08-12 1938-10-31 Loewe Opta Gmbh Method for eliminating edge blurring in plate deflection in cathode ray tubes.
GB486041A (en) * 1936-11-30 1938-05-30 Marconi Wireless Telegraph Co Improvements in or relating to electrical time base circuits
US2214614A (en) * 1938-02-12 1940-09-10 Rca Corp Phase inversion circuits

Also Published As

Publication number Publication date
US2473754A (en) 1949-06-21

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