GB735650A - Improvements in line scanning circuits for television receivers - Google Patents

Improvements in line scanning circuits for television receivers

Info

Publication number
GB735650A
GB735650A GB2786752A GB2786752A GB735650A GB 735650 A GB735650 A GB 735650A GB 2786752 A GB2786752 A GB 2786752A GB 2786752 A GB2786752 A GB 2786752A GB 735650 A GB735650 A GB 735650A
Authority
GB
United Kingdom
Prior art keywords
impedance
value
frequency
line scanning
television receivers
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
GB2786752A
Inventor
Alan Stone
Geoffrey Bernard-Baker
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.)
Murphy Radio Ltd
Original Assignee
Murphy Radio 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 Murphy Radio Ltd filed Critical Murphy Radio Ltd
Priority to GB2786752A priority Critical patent/GB735650A/en
Publication of GB735650A publication Critical patent/GB735650A/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

Landscapes

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

Abstract

735,650. Rectifying. MURPHY RADIO, Ltd. Nov. 5, 1953 [Nov. 5, 1952], No. 27867/52. Class 38 (2). [Also in Group XL (c)] A line scan circuit in which the E.H.T. due to interruptions of the scanning circuit are used, comprises a line output valve 1 to the first grid of which are supplied synchronizing signals, in the grid/cathode circuit of which is included an impedance 6, the impedance of which increases as the frequency decreases so that at the normal line frequency its impedance is low and the negative feedback is of small value but when the frequency falls due to the disappearance of the synchronizing signals thus increasing the impedance of the element 6 the value of the negative feedback increases thereby confining the value of the E.H.T. produced to safe limits.
GB2786752A 1952-11-05 1952-11-05 Improvements in line scanning circuits for television receivers Expired GB735650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2786752A GB735650A (en) 1952-11-05 1952-11-05 Improvements in line scanning circuits for television receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2786752A GB735650A (en) 1952-11-05 1952-11-05 Improvements in line scanning circuits for television receivers

Publications (1)

Publication Number Publication Date
GB735650A true GB735650A (en) 1955-08-24

Family

ID=10266595

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2786752A Expired GB735650A (en) 1952-11-05 1952-11-05 Improvements in line scanning circuits for television receivers

Country Status (1)

Country Link
GB (1) GB735650A (en)

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