GB222413A - Improvements in electric corrective or modifying circuits for use with apparatus forreproducing sound - Google Patents

Improvements in electric corrective or modifying circuits for use with apparatus forreproducing sound

Info

Publication number
GB222413A
GB222413A GB1042024A GB1042024A GB222413A GB 222413 A GB222413 A GB 222413A GB 1042024 A GB1042024 A GB 1042024A GB 1042024 A GB1042024 A GB 1042024A GB 222413 A GB222413 A GB 222413A
Authority
GB
United Kingdom
Prior art keywords
sound
forreproducing
corrective
electric
modifying circuits
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
GB1042024A
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
Application filed by Individual filed Critical Individual
Priority to GB1042024A priority Critical patent/GB222413A/en
Publication of GB222413A publication Critical patent/GB222413A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/04—Manually-operated control in untuned amplifiers
    • H03G5/06—Manually-operated control in untuned amplifiers having discharge tubes

Landscapes

  • Amplifiers (AREA)

Abstract

222,413. Sykes, A. F. June 28, 1923. Addition to 160,223. Drawings to Specification. Thermionic amplifiers.-In the recording, reproduction, or wireless transmission of sound, a resistance-coupled valve amplifier is modified to permit the selective amplification of different ranges of frequencies. For this purpose, a differentiating transformer is connected in series with the coupling resistance, or a condenser or in. ductance in parallel therewith, the circuits being identical with those described in Specification 220,420. Specifications 190,759, 190,840, and 194,424 also are referred to.
GB1042024A 1923-06-28 1923-06-28 Improvements in electric corrective or modifying circuits for use with apparatus forreproducing sound Expired GB222413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1042024A GB222413A (en) 1923-06-28 1923-06-28 Improvements in electric corrective or modifying circuits for use with apparatus forreproducing sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1042024A GB222413A (en) 1923-06-28 1923-06-28 Improvements in electric corrective or modifying circuits for use with apparatus forreproducing sound

Publications (1)

Publication Number Publication Date
GB222413A true GB222413A (en) 1924-09-29

Family

ID=9967477

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1042024A Expired GB222413A (en) 1923-06-28 1923-06-28 Improvements in electric corrective or modifying circuits for use with apparatus forreproducing sound

Country Status (1)

Country Link
GB (1) GB222413A (en)

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