JPS6430385A - Demagnetizing circuit - Google Patents
Demagnetizing circuitInfo
- Publication number
- JPS6430385A JPS6430385A JP18816687A JP18816687A JPS6430385A JP S6430385 A JPS6430385 A JP S6430385A JP 18816687 A JP18816687 A JP 18816687A JP 18816687 A JP18816687 A JP 18816687A JP S6430385 A JPS6430385 A JP S6430385A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- relay
- switch
- terminal
- demagnetizing
- 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
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
PURPOSE:To execute the demagnetizing operation of a magnetized shadow mask within a short time by providing a switch, a rectifier circuit, a relay, a positive polarity thermister, a demagnetizing coil, and a delay circuit. CONSTITUTION:The titled circuit is constituted of power supply terminals E1, E2 through which AC power supply is supplied, a rectifier circuit 1 whose input terminal is connected to the terminal E1 via a switch S that turns off only during the operation, a relay RL provided with brake switches rl1, rl2 that turn off during the action of the relay RL, a positive polarity thermister TH connected to the terminal E1 via a brake switch rl1, the demagnetizing coil L connected in series to a thermister TH and to another terminal E2, and the delay circuit 2 which is supplied with power from the output terminal of the circuit 1, and delays the action of the relay RL for a prescribed time. As a result, demagnetizing action is automatically operated when the power is supplied to the circuit. Since the sharl of magnetized shadow masks after can be demagnetized at any time through switch operation, color smears in a picture can easily be eliminated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18816687A JPS6430385A (en) | 1987-07-27 | 1987-07-27 | Demagnetizing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18816687A JPS6430385A (en) | 1987-07-27 | 1987-07-27 | Demagnetizing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6430385A true JPS6430385A (en) | 1989-02-01 |
Family
ID=16218907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18816687A Pending JPS6430385A (en) | 1987-07-27 | 1987-07-27 | Demagnetizing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6430385A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6109751A (en) * | 1996-10-30 | 2000-08-29 | Seiko Epson Corporation | Projector and lighting optical system therefor |
-
1987
- 1987-07-27 JP JP18816687A patent/JPS6430385A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6109751A (en) * | 1996-10-30 | 2000-08-29 | Seiko Epson Corporation | Projector and lighting optical system therefor |
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