GB827533A - Improvements in or relating to non-linear amplifier circuits - Google Patents

Improvements in or relating to non-linear amplifier circuits

Info

Publication number
GB827533A
GB827533A GB987756A GB987756A GB827533A GB 827533 A GB827533 A GB 827533A GB 987756 A GB987756 A GB 987756A GB 987756 A GB987756 A GB 987756A GB 827533 A GB827533 A GB 827533A
Authority
GB
United Kingdom
Prior art keywords
valve
amplifier
march
datum level
linear amplifier
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
GB987756A
Inventor
Gerald Hamilton Askew
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.)
Rank Cintel Ltd
Original Assignee
Rank Cintel 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 Rank Cintel Ltd filed Critical Rank Cintel Ltd
Priority to GB987756A priority Critical patent/GB827533A/en
Publication of GB827533A publication Critical patent/GB827533A/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

Landscapes

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

Abstract

827,533. Television. RANK CINTEL Ltd. March 29, 1957 [March 29, 1956 (2)], Nos. 9877/56 and 9878/56. Class 40 (3). [Also in Group XL (c)] A gamma-control circuit comprises an adjustably non-linear amplifier which is restored to a linear condition during a part of the time in which a signal, including a repetitive datum level, is applied to the amplifier so that the datum level is brought to a predetermined potential by clamping means following the amplifier. When the input voltage to valve 3 falls below a certain value the valve 8 conducts due to common cathode resistor 7 and lowers the output potential. The valve 8 may be prevented from conducting by a negative potential applied to its first grid from the anode of the valve 12, due to a positive pulse applied to the terminal 14, or the valve 12 may be replaced by a diode and a negative pulse applied to its cathode.
GB987756A 1956-03-29 1956-03-29 Improvements in or relating to non-linear amplifier circuits Expired GB827533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB987756A GB827533A (en) 1956-03-29 1956-03-29 Improvements in or relating to non-linear amplifier circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB987756A GB827533A (en) 1956-03-29 1956-03-29 Improvements in or relating to non-linear amplifier circuits

Publications (1)

Publication Number Publication Date
GB827533A true GB827533A (en) 1960-02-03

Family

ID=9880445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB987756A Expired GB827533A (en) 1956-03-29 1956-03-29 Improvements in or relating to non-linear amplifier circuits

Country Status (1)

Country Link
GB (1) GB827533A (en)

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