JPS5676686A - Horizontal oscillation circuit - Google Patents

Horizontal oscillation circuit

Info

Publication number
JPS5676686A
JPS5676686A JP15404479A JP15404479A JPS5676686A JP S5676686 A JPS5676686 A JP S5676686A JP 15404479 A JP15404479 A JP 15404479A JP 15404479 A JP15404479 A JP 15404479A JP S5676686 A JPS5676686 A JP S5676686A
Authority
JP
Japan
Prior art keywords
fho
power supply
supply voltage
decreased
increased
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.)
Granted
Application number
JP15404479A
Other languages
Japanese (ja)
Other versions
JPS5928313B2 (en
Inventor
Masaki Hosono
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15404479A priority Critical patent/JPS5928313B2/en
Publication of JPS5676686A publication Critical patent/JPS5676686A/en
Publication of JPS5928313B2 publication Critical patent/JPS5928313B2/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

Landscapes

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

Abstract

PURPOSE:To prevent inoperative action of AVR circuit at switch on or an appearance of unsmooth picture, by making inactive the operation of the swiching circuit connected to the output of a differential amplifier and decreasing the set current by increasing fHO. CONSTITUTION:Between the common emitter of differential amplifiers Q16, Q17 constituting a voltage comparison circuit 4 and the current source consisting of Q12, Q18, R5-R7, a Zener diode Q22 is inserted, to saturate the transistor Q18 and to increase the horizontal oscillation frequency fHO when the power supply voltage is decreased. That is, by saturating Q18 when the power supply voltage is decreased, the collector current of Q18 is made smaller than the specified current value proportional to the power supply voltage and the switching operation of Q20 is made inactive, and a low bias VL is increased, UC=VH-VL is made smaller, and fHO is increased.
JP15404479A 1979-11-27 1979-11-27 horizontal oscillation circuit Expired JPS5928313B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15404479A JPS5928313B2 (en) 1979-11-27 1979-11-27 horizontal oscillation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15404479A JPS5928313B2 (en) 1979-11-27 1979-11-27 horizontal oscillation circuit

Publications (2)

Publication Number Publication Date
JPS5676686A true JPS5676686A (en) 1981-06-24
JPS5928313B2 JPS5928313B2 (en) 1984-07-12

Family

ID=15575684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15404479A Expired JPS5928313B2 (en) 1979-11-27 1979-11-27 horizontal oscillation circuit

Country Status (1)

Country Link
JP (1) JPS5928313B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02119801A (en) * 1988-10-29 1990-05-07 J S Shoko Kk Attaching method for jewelry to accessory, etc.
JPH045862U (en) * 1990-05-02 1992-01-20

Also Published As

Publication number Publication date
JPS5928313B2 (en) 1984-07-12

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