GB367624A - Improvements in or relating to talking-film installations - Google Patents

Improvements in or relating to talking-film installations

Info

Publication number
GB367624A
GB367624A GB11661/31A GB1166131A GB367624A GB 367624 A GB367624 A GB 367624A GB 11661/31 A GB11661/31 A GB 11661/31A GB 1166131 A GB1166131 A GB 1166131A GB 367624 A GB367624 A GB 367624A
Authority
GB
United Kingdom
Prior art keywords
circuit
valve
inductance
april
photo
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
GB11661/31A
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.)
RADIOROEHRENFABRIK GmbH
Original Assignee
RADIOROEHRENFABRIK GmbH
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 RADIOROEHRENFABRIK GmbH filed Critical RADIOROEHRENFABRIK GmbH
Publication of GB367624A publication Critical patent/GB367624A/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
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor

Landscapes

  • Amplifiers (AREA)

Abstract

367,624. Valve amplifying circuits. RADIORÍHRENFABRIK GES., 101, Stresemannalle, Hamburg, Germany. April 20, 1931, No. 11661. Convention date, April 28, 1930. [Class 40 (v).] The grid circuit of the first valve of a thermionic amplifier, the input of which is taken from a photo-electric cell, is coupled to the anode circuit of the same or succeeding valve by means of a circuit which enhances the feedback of high frequencies relative to the low. The anode-grid capacity 13 in series with the winding 10 of the coupling transformer, is effectively in parallel with the resistance 2 associated with the photo-electric cell 1. When the resistance 2 is large the circuit 13, 10 has an appreciable shunting effect causing attenuation at high frequencies. To compensate for this, a feed-back circuit comprising condenser 8 and inductance 9 is so designed and coupled to the inductance 10 that high frequency feed-back is emphasized.
GB11661/31A 1930-04-28 1931-04-20 Improvements in or relating to talking-film installations Expired GB367624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE367624X 1930-04-28

Publications (1)

Publication Number Publication Date
GB367624A true GB367624A (en) 1932-02-25

Family

ID=6317938

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11661/31A Expired GB367624A (en) 1930-04-28 1931-04-20 Improvements in or relating to talking-film installations

Country Status (2)

Country Link
AT (1) AT126273B (en)
GB (1) GB367624A (en)

Also Published As

Publication number Publication date
AT126273B (en) 1932-01-11

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