GB465118A - Improvements in and relating to amplifying circuits suitable in connection with television - Google Patents

Improvements in and relating to amplifying circuits suitable in connection with television

Info

Publication number
GB465118A
GB465118A GB2997335A GB2997335A GB465118A GB 465118 A GB465118 A GB 465118A GB 2997335 A GB2997335 A GB 2997335A GB 2997335 A GB2997335 A GB 2997335A GB 465118 A GB465118 A GB 465118A
Authority
GB
United Kingdom
Prior art keywords
loss
impedance
resistance
television
amplifying 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
GB2997335A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB2997335A priority Critical patent/GB465118A/en
Publication of GB465118A publication Critical patent/GB465118A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/148—Video amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)

Abstract

465,118. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd., and MYNALL, D. J. Oct. 30, 1935, No. 29973. [Class 40 (v)] An amplifier for television scanning-voltages is provided with a high load resistance R in its anode circuit, and loss of amplification of the highest frequency components of the scanning- voltages is avoided by inserting a suitablydesigned impedance (such as r, c) in the cathode lead. The loss at high frequencies is due to unwanted capacity (represented by a condenser C) between anode and earth and is of greater extent when the resistance R is high. This loss is overcome by inserting an impedance in the cathode lead, which should be approximately of the same kind as the complex impedance in the anode circuit. In the case shown the product rc should approximate to the product RC. A second valve in push-pull may be fed from a portion of the resistance R.
GB2997335A 1935-10-30 1935-10-30 Improvements in and relating to amplifying circuits suitable in connection with television Expired GB465118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2997335A GB465118A (en) 1935-10-30 1935-10-30 Improvements in and relating to amplifying circuits suitable in connection with television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2997335A GB465118A (en) 1935-10-30 1935-10-30 Improvements in and relating to amplifying circuits suitable in connection with television

Publications (1)

Publication Number Publication Date
GB465118A true GB465118A (en) 1937-04-30

Family

ID=10300195

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2997335A Expired GB465118A (en) 1935-10-30 1935-10-30 Improvements in and relating to amplifying circuits suitable in connection with television

Country Status (1)

Country Link
GB (1) GB465118A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475547A (en) * 1943-12-14 1949-07-05 Automatic Elect Lab Thermionic valve amplifier
DE763749C (en) * 1937-05-11 1953-05-04 Hazeltine Corp Broadband amplifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763749C (en) * 1937-05-11 1953-05-04 Hazeltine Corp Broadband amplifier
US2475547A (en) * 1943-12-14 1949-07-05 Automatic Elect Lab Thermionic valve amplifier

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