GB367056A - Improvements in or relating to electron discharge amplification systems - Google Patents

Improvements in or relating to electron discharge amplification systems

Info

Publication number
GB367056A
GB367056A GB3517630A GB3517630A GB367056A GB 367056 A GB367056 A GB 367056A GB 3517630 A GB3517630 A GB 3517630A GB 3517630 A GB3517630 A GB 3517630A GB 367056 A GB367056 A GB 367056A
Authority
GB
United Kingdom
Prior art keywords
stage
relating
nov
electron discharge
amplifier
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
GB3517630A
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US406571A external-priority patent/US1979035A/en
Priority claimed from US409211A external-priority patent/US1979036A/en
Application filed by Individual filed Critical Individual
Publication of GB367056A publication Critical patent/GB367056A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/04—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes
    • H03G9/10—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes for tone control and volume expansion or compression

Abstract

367,056. Valve amplifying circuits. HAMMOND, J. H., Hesperus Avenue, Gloucester, Massachusetts, U.S.A. Nov. 21, 1930, No. 35176. Convention date, Nov. 23, 1929. Addition to 366,937. [Classes 40 (iii) and 40 (v).] In an amplifier for gramophone reproduction or the like as described in the parent Speci. fication the means to control the gain in accordance with the intensity and to prevent over. loading are applied to push-pull amplifiers. The Figure shows a three-stage amplifier the bias for the stage 27, 28 of which is controlled by the input of intermediate frequencies to that stage, the low frequencies being removed by small condensers 50, 51 and the high frequencies by the filter 59. The output through filters 64, 65 and rectifiers 61 controls the grid bias of the input stage 25, 26 so as to prevent overloading.
GB3517630A 1929-11-12 1930-11-21 Improvements in or relating to electron discharge amplification systems Expired GB367056A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US406571A US1979035A (en) 1929-11-12 1929-11-12 Automatic monitoring system
US409211A US1979036A (en) 1929-11-23 1929-11-23 Monitoring system for push-pull amplifiers

Publications (1)

Publication Number Publication Date
GB367056A true GB367056A (en) 1932-02-18

Family

ID=31997674

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3517630A Expired GB367056A (en) 1929-11-12 1930-11-21 Improvements in or relating to electron discharge amplification systems

Country Status (2)

Country Link
FR (1) FR39415E (en)
GB (1) GB367056A (en)

Also Published As

Publication number Publication date
FR39415E (en) 1931-10-19

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