GB317221A - Improvements in methods of reducing the intensity of unduly intense impulses in electrical amplifiers or loud speaker circuits - Google Patents

Improvements in methods of reducing the intensity of unduly intense impulses in electrical amplifiers or loud speaker circuits

Info

Publication number
GB317221A
GB317221A GB2275428A GB2275428A GB317221A GB 317221 A GB317221 A GB 317221A GB 2275428 A GB2275428 A GB 2275428A GB 2275428 A GB2275428 A GB 2275428A GB 317221 A GB317221 A GB 317221A
Authority
GB
United Kingdom
Prior art keywords
choke
coupling
condenser
frequencies
leak
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
GB2275428A
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 GB2275428A priority Critical patent/GB317221A/en
Priority to FR679870D priority patent/FR679870A/en
Publication of GB317221A publication Critical patent/GB317221A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

317,221. Pollock, A. F., and Pollock, D. A. Aug. 7, 1928. Amplifying systems.-Frequencies which are recorded with undue intensity in phonographic and photographic sound records are subdued duing reproduction therefrom by the insertion, in the anode or grid circuit of an amplifying valve, of a selective leak comprising, in series, a condenser f passing all except the low audiofrequencies, a choke shunted by a condenser or resistance i, or both, and impeding the lower high audio-frequencies, and a choke h impeding the higher audio-frequencies. The condenser f may be adjustable, and the impedance of the choke h may be varied by providing it with tappings or a sliding core. In the case of resistance coupling (as shown) or with choke coupling, the choke It is also arranged in series with the anode resistance d or coupling choke, but in the case of transformer coupling, the whole of the leak is connected across the primary or secondary winding. The leak mav also be connected across loudspeaker windings in the output circuit.
GB2275428A 1928-08-07 1928-08-07 Improvements in methods of reducing the intensity of unduly intense impulses in electrical amplifiers or loud speaker circuits Expired GB317221A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2275428A GB317221A (en) 1928-08-07 1928-08-07 Improvements in methods of reducing the intensity of unduly intense impulses in electrical amplifiers or loud speaker circuits
FR679870D FR679870A (en) 1928-08-07 1929-08-05 Process Improvements for Reducing the Intensity of Undue Pulse Intensity in Amplifier and Loudspeaker Electrical Circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2275428A GB317221A (en) 1928-08-07 1928-08-07 Improvements in methods of reducing the intensity of unduly intense impulses in electrical amplifiers or loud speaker circuits

Publications (1)

Publication Number Publication Date
GB317221A true GB317221A (en) 1929-08-15

Family

ID=10184531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2275428A Expired GB317221A (en) 1928-08-07 1928-08-07 Improvements in methods of reducing the intensity of unduly intense impulses in electrical amplifiers or loud speaker circuits

Country Status (2)

Country Link
FR (1) FR679870A (en)
GB (1) GB317221A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1690336A1 (en) * 2003-09-30 2006-08-16 Jong-Ryul Lee Input/output signals preserver circuit of amplification circuits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1690336A1 (en) * 2003-09-30 2006-08-16 Jong-Ryul Lee Input/output signals preserver circuit of amplification circuits
EP1690336A4 (en) * 2003-09-30 2008-05-21 Jong-Ryul Lee Input/output signals preserver circuit of amplification circuits

Also Published As

Publication number Publication date
FR679870A (en) 1930-04-18

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