GB366086A - Improvements applicable to apparatus used in the electrical reproduction of sound - Google Patents

Improvements applicable to apparatus used in the electrical reproduction of sound

Info

Publication number
GB366086A
GB366086A GB3206530A GB3206530A GB366086A GB 366086 A GB366086 A GB 366086A GB 3206530 A GB3206530 A GB 3206530A GB 3206530 A GB3206530 A GB 3206530A GB 366086 A GB366086 A GB 366086A
Authority
GB
United Kingdom
Prior art keywords
grid
resistances
cell
valve
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
GB3206530A
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.)
Radiovisor Parent Ltd
Original Assignee
Radiovisor Parent 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 Radiovisor Parent Ltd filed Critical Radiovisor Parent Ltd
Priority to GB3206530A priority Critical patent/GB366086A/en
Publication of GB366086A publication Critical patent/GB366086A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor

Landscapes

  • Details Of Television Scanning (AREA)
  • Amplifiers (AREA)
  • Details Of Valves (AREA)

Abstract

366,086. Valve amplifying circuits. CONSTABLE, F. H., St. Johns, Cashio Lane, Letchworth, Hertfordshire, and RADIOVISOR PARENT, Ltd., 28, Little Russell Street, London. Oct. 24, 1930, No. 32065. [Class 40 (v).] In a talking picture installation selectively using either a photo-electric cell or a gramophone pick-up as a source of voice currents, a shaping amplifier is switched in when the source is a photo-electric cell. The output of cell 1 is applied to the grid of valve V<1> through condenser C<1> and grid leak R<4>. The coupling between valves V<1>, V<2> comprises a transformer T<1 >having resistances R<5>, R<6> and inductance L connected in series across its secondary. The common point of resistances R<5>, R<6> is connected to the grid of V<2> and the coupling favours the higher frequencies owing to the increase of impedance of L with frequency. The cell 1 and anodes of the valves are fed through resistances from a common source, and grid bias for valve V<2> is obtained by the use of series-connected heaters.
GB3206530A 1930-10-24 1930-10-24 Improvements applicable to apparatus used in the electrical reproduction of sound Expired GB366086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3206530A GB366086A (en) 1930-10-24 1930-10-24 Improvements applicable to apparatus used in the electrical reproduction of sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3206530A GB366086A (en) 1930-10-24 1930-10-24 Improvements applicable to apparatus used in the electrical reproduction of sound

Publications (1)

Publication Number Publication Date
GB366086A true GB366086A (en) 1932-01-25

Family

ID=10332638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3206530A Expired GB366086A (en) 1930-10-24 1930-10-24 Improvements applicable to apparatus used in the electrical reproduction of sound

Country Status (1)

Country Link
GB (1) GB366086A (en)

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