GB981731A - Improvements in or relating to sawtooth circuit arrangements - Google Patents

Improvements in or relating to sawtooth circuit arrangements

Info

Publication number
GB981731A
GB981731A GB26494/62A GB2649462A GB981731A GB 981731 A GB981731 A GB 981731A GB 26494/62 A GB26494/62 A GB 26494/62A GB 2649462 A GB2649462 A GB 2649462A GB 981731 A GB981731 A GB 981731A
Authority
GB
United Kingdom
Prior art keywords
resistor
sawtooth
voltage
july
valve
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
GB26494/62A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB981731A publication Critical patent/GB981731A/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
    • H04N3/185—Maintaining dc voltage constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Amplifiers (AREA)

Abstract

981,731. Sawtooth circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. July 10, 1962 [July 13, 1961], No. 26494/62. Headings H3P and H3T. In a sawtooth current generator, the flyback pulses are fed via an adjustable impedance to a voltage dependent resistor, the resulting direct voltage being used to control the sawtooth amplitude. As shown, a line output stage for television apparatus comprises a valve or transistor 1 driven by a sawtooth waveform 2 so as to feed a sawtooth current via a transformer 8 to deflection coils 10. An efficiency diode circuit 6, 9 is provided. The positive flyback pulses are fed via a blocking capacitor 15 and a variable resistor 14 to a voltage-dependent resistor 16 which provides a negative amplitude-stabilizing voltage for valve 1 as described in Specification 890,805. Resistor 16 is biased from the boosted H.T. via resistor 18. This resistor may alternatively be connected across capacitor 15. Resistor 14 is adjusted to compensate for tolerances in resistor 16.
GB26494/62A 1961-07-13 1962-07-10 Improvements in or relating to sawtooth circuit arrangements Expired GB981731A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP0027526 1961-07-13

Publications (1)

Publication Number Publication Date
GB981731A true GB981731A (en) 1965-01-27

Family

ID=7370871

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26494/62A Expired GB981731A (en) 1961-07-13 1962-07-10 Improvements in or relating to sawtooth circuit arrangements

Country Status (3)

Country Link
US (1) US3233143A (en)
DE (1) DE1562292B1 (en)
GB (1) GB981731A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434000A (en) * 1966-04-25 1969-03-18 Rca Corp Stabilization of television deflection circuits

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU35208A1 (en) * 1956-06-15
AT208936B (en) * 1958-02-15 1960-05-10 Philips Nv Circuit arrangement for generating a sawtooth current in a coil and a direct voltage
NL224964A (en) * 1958-02-15

Also Published As

Publication number Publication date
DE1562292C2 (en) 1974-08-29
DE1562292B1 (en) 1970-05-14
US3233143A (en) 1966-02-01

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