PT83208B - Circuito de desmagnetizacao para tubo de raios catodicos de um equipamento de visualizacao de video - Google Patents
Circuito de desmagnetizacao para tubo de raios catodicos de um equipamento de visualizacao de video Download PDFInfo
- Publication number
- PT83208B PT83208B PT83208A PT8320886A PT83208B PT 83208 B PT83208 B PT 83208B PT 83208 A PT83208 A PT 83208A PT 8320886 A PT8320886 A PT 8320886A PT 83208 B PT83208 B PT 83208B
- Authority
- PT
- Portugal
- Prior art keywords
- demagnetization
- capacitor
- coil
- video display
- current
- Prior art date
Links
- 238000012800 visualization Methods 0.000 title description 2
- 239000003990 capacitor Substances 0.000 claims abstract description 33
- 230000005347 demagnetization Effects 0.000 claims description 59
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 description 19
- 230000005284 excitation Effects 0.000 description 11
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 241000709554 Conderis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/29—Picture reproducers using cathode ray tubes using demagnetisation or compensation of external magnetic fields
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/782,243 US4742270A (en) | 1985-09-30 | 1985-09-30 | Degaussing circuit with residual current cutoff |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PT83208A PT83208A (pt) | 1987-02-27 |
| PT83208B true PT83208B (pt) | 1995-03-01 |
Family
ID=25125465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT83208A PT83208B (pt) | 1985-09-30 | 1986-08-14 | Circuito de desmagnetizacao para tubo de raios catodicos de um equipamento de visualizacao de video |
Country Status (10)
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4950955A (en) * | 1988-09-06 | 1990-08-21 | Rca Licensing Corporation | Magnetic field compensator for a CRT |
| JPH0346885A (ja) * | 1989-07-11 | 1991-02-28 | Samsung Electron Co Ltd | リレーを用いたデガウシング回路 |
| JP2578220B2 (ja) * | 1989-10-19 | 1997-02-05 | 積水化学工業株式会社 | 画像によるホームメディアネットワーク |
| DE4041484A1 (de) * | 1990-12-22 | 1992-06-25 | Thomson Brandt Gmbh | Entmagnetisierungsschaltung fuer die bildroehre in einem fernsehempfaenger |
| DE4335080A1 (de) * | 1992-10-16 | 1994-04-21 | Gold Star Electronics | Vorrichtung zum Entmagnetisieren |
| KR100190160B1 (ko) * | 1995-10-27 | 1999-06-01 | 윤종용 | 디스플레이 기기의 전계 차폐 회로 |
| US5675219A (en) * | 1995-12-21 | 1997-10-07 | Thomson Consumer Electronics, Inc. | Degaussing circuit for wide-range ac |
| GB9708262D0 (en) * | 1997-04-24 | 1997-06-18 | Thomson Multimedia Sa | Degaussing circuitry |
| US5940261A (en) * | 1997-06-25 | 1999-08-17 | U.S. Philips Corporation | Circuit and method independent of frequency and voltage deviations of supply voltage, and display apparatus incorporating same circuit |
| WO2003090235A2 (en) * | 2002-04-19 | 2003-10-30 | Thomson Licensing S.A. | Passive compensation of focus tracking utilizing winding and capacitor |
| KR100810513B1 (ko) * | 2002-10-04 | 2008-03-07 | 삼성전자주식회사 | Ｃｒｔ모니터의 디가우징 회로 |
| US7088537B2 (en) * | 2004-03-09 | 2006-08-08 | Seagate Technology Llc | Removing residual magnetization in a data transducer |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2962622A (en) * | 1958-10-10 | 1960-11-29 | Westinghouse Electric Corp | Television degaussing apparatus |
| US3249795A (en) * | 1964-08-31 | 1966-05-03 | Admiral Corp | Automatic degaussing circuit for color receivers |
| NL6803012A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1968-03-02 | 1969-09-04 | ||
| DE2034704A1 (de) * | 1970-07-13 | 1972-01-20 | Sel | Schaltungsanordnung zur Abschaltung des Restentmagnetisierungs Wechselstroms eines Farbfernsehempfängers |
| DE2035519A1 (de) * | 1970-07-17 | 1972-01-20 | Imp Gmbh | Schaltung zur Entmagnetisierung der Bildröhre in einem Farbfernsehempfänger |
| US3733524A (en) * | 1972-03-01 | 1973-05-15 | Singer Co | Degaussing circuit |
| US4295078A (en) * | 1980-05-12 | 1981-10-13 | Rca Corporation | Color television receiver degaussing circuit |
| JPS5762484U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1980-09-30 | 1982-04-13 | ||
| JPS5978778U (ja) * | 1982-11-18 | 1984-05-28 | 株式会社東芝 | テレビジヨン受像機のデガウサ回路 |
| US4535270A (en) * | 1983-11-17 | 1985-08-13 | Rca Corporation | Resonant degaussing without residual magnetism |
-
1985
- 1985-09-30 US US06/782,243 patent/US4742270A/en not_active Expired - Lifetime
-
1986
- 1986-08-14 PT PT83208A patent/PT83208B/pt not_active IP Right Cessation
- 1986-09-16 CA CA000518275A patent/CA1288805C/en not_active Expired - Lifetime
- 1986-09-23 ES ES8602092A patent/ES2001434A6/es not_active Expired
- 1986-09-29 DE DE19863633069 patent/DE3633069A1/de active Granted
- 1986-09-29 JP JP61233126A patent/JP2633839B2/ja not_active Expired - Fee Related
- 1986-09-29 GB GB8623350A patent/GB2181328B/en not_active Expired - Lifetime
- 1986-09-29 KR KR1019860008147A patent/KR940003048B1/ko not_active Expired - Fee Related
- 1986-09-29 FR FR868613534A patent/FR2588117B1/fr not_active Expired - Lifetime
-
1995
- 1995-02-09 HK HK18395A patent/HK18395A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP2633839B2 (ja) | 1997-07-23 |
| GB8623350D0 (en) | 1986-11-05 |
| KR870003662A (ko) | 1987-04-18 |
| GB2181328B (en) | 1990-02-14 |
| DE3633069C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-01-03 |
| CA1288805C (en) | 1991-09-10 |
| HK18395A (en) | 1995-02-17 |
| FR2588117A1 (fr) | 1987-04-03 |
| PT83208A (pt) | 1987-02-27 |
| GB2181328A (en) | 1987-04-15 |
| US4742270A (en) | 1988-05-03 |
| DE3633069A1 (de) | 1987-04-09 |
| FR2588117B1 (fr) | 1992-01-10 |
| KR940003048B1 (ko) | 1994-04-11 |
| JPS62142494A (ja) | 1987-06-25 |
| ES2001434A6 (es) | 1988-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG3A | Patent granted, date of granting |
Effective date: 19940822 |
|
| MM3A | Annulment or lapse |
Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20050222 |