JPS5518120A - Heater circuit of picture tube - Google Patents
Heater circuit of picture tubeInfo
- 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
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.
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)
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 |
-
1978
- 1978-07-26 JP JP9048378A patent/JPS5518120A/en active Pending
Cited By (1)
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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