GB739360A - Grid bias arrangement for television receivers - Google Patents

Grid bias arrangement for television receivers

Info

Publication number
GB739360A
GB739360A GB2747/54A GB274754A GB739360A GB 739360 A GB739360 A GB 739360A GB 2747/54 A GB2747/54 A GB 2747/54A GB 274754 A GB274754 A GB 274754A GB 739360 A GB739360 A GB 739360A
Authority
GB
United Kingdom
Prior art keywords
grid
valve
grid bias
television receivers
bias arrangement
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
GB2747/54A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB739360A publication Critical patent/GB739360A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • 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
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H04B1/1623—Supply circuits using tubes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

739,360. Valve circuits for radio reception. STANDARD TELEPHONES & CABLES, Ltd. Jan. 29, 1954 [March 6, 1953], No. 2747/54. Class 40 (6). In a television receiver a negative grid bias voltage is derived from the line timebase. The timebase comprises a sawtooth generator VA1, VA1<SP>1</SP> of the cathode-coupled type driving a line output valve VA2. Grid current in the valve VA2 produces a negative potential across the grid leak R8 which is smoothed by means of resistor R10 and condenser C7 and which is either used directly as a fixed bias for one or more other stages of the receiver or alternatively is applied thereto via an adjustable potentiometer P.
GB2747/54A 1953-03-06 1954-01-29 Grid bias arrangement for television receivers Expired GB739360A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL739360X 1953-03-06

Publications (1)

Publication Number Publication Date
GB739360A true GB739360A (en) 1955-10-26

Family

ID=19820474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2747/54A Expired GB739360A (en) 1953-03-06 1954-01-29 Grid bias arrangement for television receivers

Country Status (2)

Country Link
BE (1) BE526980A (en)
GB (1) GB739360A (en)

Also Published As

Publication number Publication date
BE526980A (en)

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