JPS5665573A - High voltage power supply for crt - Google Patents
High voltage power supply for crtInfo
- Publication number
- JPS5665573A JPS5665573A JP14129979A JP14129979A JPS5665573A JP S5665573 A JPS5665573 A JP S5665573A JP 14129979 A JP14129979 A JP 14129979A JP 14129979 A JP14129979 A JP 14129979A JP S5665573 A JPS5665573 A JP S5665573A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- variance
- circuit
- monitoring
- crt
- 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
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)
- Details Of Television Scanning (AREA)
Abstract
PURPOSE:To make small the scale of circuit, by monitoring the change in the output voltage at the voltage application part to the focus grid together with controlling the gate circuit with the result of monitoring. CONSTITUTION:The Zener diode located to prevent the variance of output due to the variance in load is omitted, a registor 18 is inserted in series with a variable resistor 12 through which a voltage is fed to the focus grid, and a failure voltage detecting circuit 13 for monitor is provided at the connecting point between the variable resistor 12 and the resistor 18. With this constitution, since the voltage applied part to the focus grid is taken from the intermediate tap of the secondary winding of a flyback transformer, a voltage proportional to the anode voltage of a CRT is obtained, and further monitoring is made at a circuit 13, and a gate circuit 14 can be controlled according to the result, then both the voltage variance due to load variance and the voltage variance due to voltage abnormal rise can be controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14129979A JPS5665573A (en) | 1979-11-02 | 1979-11-02 | High voltage power supply for crt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14129979A JPS5665573A (en) | 1979-11-02 | 1979-11-02 | High voltage power supply for crt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5665573A true JPS5665573A (en) | 1981-06-03 |
Family
ID=15288646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14129979A Pending JPS5665573A (en) | 1979-11-02 | 1979-11-02 | High voltage power supply for crt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5665573A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0548466U (en) * | 1991-11-28 | 1993-06-25 | 三洋電機株式会社 | High voltage generation circuit |
| KR100340775B1 (en) * | 1993-09-03 | 2002-10-25 | 톰슨 콘슈머 일렉트로닉스, 인코포레이티드 | Cathode Ray Tube Power Supply |
-
1979
- 1979-11-02 JP JP14129979A patent/JPS5665573A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0548466U (en) * | 1991-11-28 | 1993-06-25 | 三洋電機株式会社 | High voltage generation circuit |
| KR100340775B1 (en) * | 1993-09-03 | 2002-10-25 | 톰슨 콘슈머 일렉트로닉스, 인코포레이티드 | Cathode Ray Tube Power Supply |
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