JPS5518120A - Heater circuit of picture tube - Google Patents

Heater circuit of picture tube

Info

Publication number
JPS5518120A
JPS5518120A JP9048378A JP9048378A JPS5518120A JP S5518120 A JPS5518120 A JP S5518120A JP 9048378 A JP9048378 A JP 9048378A JP 9048378 A JP9048378 A JP 9048378A JP S5518120 A JPS5518120 A JP S5518120A
Authority
JP
Japan
Prior art keywords
picture tube
heater
line pulse
horizontal flyback
flyback line
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.)
Pending
Application number
JP9048378A
Other languages
Japanese (ja)
Inventor
Koji Takahashi
Kuninori Kasagi
Machio Kawashima
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9048378A priority Critical patent/JPS5518120A/en
Publication of JPS5518120A publication Critical patent/JPS5518120A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)
  • Details Of Television Scanning (AREA)

Abstract

PURPOSE:To enhance the reliability for the heater circuit of the picture tube by converting the horizontal flyback line pulse into the sine wave for lighting in case the heater of the picture tube is made to glow by the horizontal flyback line pulse. CONSTITUTION:Horizontal flyback line pulse 4 obtained from secondary winding 1 for heater of the flyback transformer is applied to heater 2 of the picture tube via waveform converter circuit comprising variable coil 8 and capacitor 9 plus insulated transformer 3. Accordingly, the pulse waveform featuring a high waveheight value is converted into the sine wave featuring the same active value and a lower waveheight value by securing the synchronization between waveform converter circuit 7 and the cycle of the horizontal flyback line pulse.
JP9048378A 1978-07-26 1978-07-26 Heater circuit of picture tube Pending JPS5518120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9048378A JPS5518120A (en) 1978-07-26 1978-07-26 Heater circuit of picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9048378A JPS5518120A (en) 1978-07-26 1978-07-26 Heater circuit of picture tube

Publications (1)

Publication Number Publication Date
JPS5518120A true JPS5518120A (en) 1980-02-08

Family

ID=13999801

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9048378A Pending JPS5518120A (en) 1978-07-26 1978-07-26 Heater circuit of picture tube

Country Status (1)

Country Link
JP (1) JPS5518120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871799A (en) * 1981-10-26 1983-04-28 Ichihara Tokushu Seishishiyo:Kk Production of loud speaker cone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871799A (en) * 1981-10-26 1983-04-28 Ichihara Tokushu Seishishiyo:Kk Production of loud speaker cone

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