GB387050A - Improvements relating to thermionic amplifying apparatus - Google Patents

Improvements relating to thermionic amplifying apparatus

Info

Publication number
GB387050A
GB387050A GB2922831A GB2922831A GB387050A GB 387050 A GB387050 A GB 387050A GB 2922831 A GB2922831 A GB 2922831A GB 2922831 A GB2922831 A GB 2922831A GB 387050 A GB387050 A GB 387050A
Authority
GB
United Kingdom
Prior art keywords
tuned
frequency
circuit
audio
resistance
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
GB2922831A
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 GB2922831A priority Critical patent/GB387050A/en
Publication of GB387050A publication Critical patent/GB387050A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

387,050. Valve amplifying circuits. SANDERSON, W. T., Fullers, Mannings Heath, Horsham, Sussex, and BLACKBURN, R., 10, Bittacy Park Avenue, Mill Hill, London. Oct. 21, 1931, No. 29228. [Class 40 (v).] A valve amplifier for audio or radio frequencies has a low-resistance tuned circuit g, h connected in a common portion of the grid and plate circuits adjacent to the indirectlyheated cathode f, thereby sharply attenuating any signal of the frequency of the tuned circuit. As shown applied to an audio-frequency amplifier, the circuit g, h is tuned to an interfering audio-frequency such as a Morse note or a heterodyne whistle. Grid bias may be obtained from a resistance i in the common branch. For radio frequencies, the circuit g, h is tuned to an unwanted frequency, and the connection from the cathode f may be made to a variable tapping on the coil g. Several circuits such as g, h, tuned to different interfering frequencies, may be used.
GB2922831A 1931-10-21 1931-10-21 Improvements relating to thermionic amplifying apparatus Expired GB387050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2922831A GB387050A (en) 1931-10-21 1931-10-21 Improvements relating to thermionic amplifying apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2922831A GB387050A (en) 1931-10-21 1931-10-21 Improvements relating to thermionic amplifying apparatus

Publications (1)

Publication Number Publication Date
GB387050A true GB387050A (en) 1933-02-02

Family

ID=10288170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2922831A Expired GB387050A (en) 1931-10-21 1931-10-21 Improvements relating to thermionic amplifying apparatus

Country Status (1)

Country Link
GB (1) GB387050A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740299C (en) * 1938-04-01 1943-10-16 Telefunken Gmbh Amplifier for a wide frequency band
DE862310C (en) * 1938-01-14 1953-01-08 Telefunken Gmbh Receiver or amplifier with a blocking or short-circuit circuit that is tuned to a frequency to be suppressed
DE756556C (en) * 1938-08-28 1954-06-08 Lorenz C Ag Tube amplifier stage for selective voltage amplification

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE862310C (en) * 1938-01-14 1953-01-08 Telefunken Gmbh Receiver or amplifier with a blocking or short-circuit circuit that is tuned to a frequency to be suppressed
DE740299C (en) * 1938-04-01 1943-10-16 Telefunken Gmbh Amplifier for a wide frequency band
DE756556C (en) * 1938-08-28 1954-06-08 Lorenz C Ag Tube amplifier stage for selective voltage amplification

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