ES2078860R - - Google Patents
Info
- Publication number
- ES2078860R ES2078860R ES9301880A ES9301880A ES2078860R ES 2078860 R ES2078860 R ES 2078860R ES 9301880 A ES9301880 A ES 9301880A ES 9301880 A ES9301880 A ES 9301880A ES 2078860 R ES2078860 R ES 2078860R
- Authority
- ES
- Spain
- Prior art keywords
- sequential
- demagnetization
- circuit
- thyristors
- condenser
- 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.)
- Granted
Links
- 230000005347 demagnetization Effects 0.000 abstract 3
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000010355 oscillation Effects 0.000 abstract 2
- 230000003534 oscillatory effect Effects 0.000 abstract 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)
Abstract
CIRCUITO DE DESMAGNETIZACION SECUENCIAL. EL CIRCUITO DE DESMAGNETIZACION SECUENCIAL OBJETO DE LA INVENCION, RELACIONADO CON LOS SISTEMAS DE DESMAGNETIZACION DE LOS TUBOS DE IMAGEN DE COLOR PARA RECEPTORES Y MONITORES, ESTA CONSTITUIDO POR LA ASOCIACION FUNCIONAL DE UN CONDENSADOR (C) QUE A TRAVES DE RESISTENCIAS (R1), (R2) Y TIRISTORES (T1), (T2) SE CARGA ALTERNATIVAMENTE A UNA TENSION (+V1), UNA BOBINA DESMAGNETIZADORA (L) QUE JUNTO CON EL CONDENSADOR (C) FORMAN UN CIRCUITO RESONANTE POR EL CUAL CIRCULA UNA CORRIENTE ALTERNATIVA Y SECUENCIAL CUANDO SE DESCARGA LA ENERGIA ALMACENADA EN EL CONDENSADOR (C) A TRAVES DE LA BOBINA DESMAGNETIZADORA (L), DIODOS (D2), (D1) Y LOS TIRISTORES (T1), (T2), CONTROLADOS ESTOS ULTIMOS POR UN CIRCUITO DE CONTROL (CI) QUE ES UN MULTIVIBRADOR QUE SE CONECTA CUANDO APARECE UNA TENSION (+V2) Y QUE REDUCE SU FRECUENCIA DE OSCILACION CON EL TIEMPO HASTA QUE DESAPARECE, HACIENDO QUE LA CARGA SECUENCIAL DEL CONDENSADOR (C) SEA MENOR EN FUNCION DEL TIEMPO Y QUE SOLOCIRCULE POR LA BOBINA DESMAGNETIZADORA (L) EL PRIMER PERIODO DE OSCILACION AMORTIGUADA PRODUCIDA POR LA DESCARGA DEL CONDENSADOR (C), PARA A CONTINUACION VOLVER A CARGARLO Y REPETIR EL CICLO DE DESCARGA HASTA LA EXTINCION DE LA CORRIENTE OSCILATORIA.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9301880A ES2078860B1 (es) | 1993-08-31 | 1993-08-31 | Circuito de desmagnetizacion secuencial. |
| AU75377/94A AU7537794A (en) | 1993-08-31 | 1994-08-30 | Sequential demagnetization circuit |
| PCT/ES1994/000082 WO1995007006A1 (es) | 1993-08-31 | 1994-08-30 | Circuito de desmagnetizacion secuencial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9301880A ES2078860B1 (es) | 1993-08-31 | 1993-08-31 | Circuito de desmagnetizacion secuencial. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| ES2078860A2 ES2078860A2 (es) | 1995-12-16 |
| ES2078860R true ES2078860R (es) | 1997-04-01 |
| ES2078860B1 ES2078860B1 (es) | 1997-11-16 |
Family
ID=8282957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES9301880A Expired - Lifetime ES2078860B1 (es) | 1993-08-31 | 1993-08-31 | Circuito de desmagnetizacion secuencial. |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU7537794A (es) |
| ES (1) | ES2078860B1 (es) |
| WO (1) | WO1995007006A1 (es) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3889485T2 (de) * | 1987-03-13 | 1994-11-24 | Rca Thomson Licensing Corp | Resonanzentmagnetisierungseinrichtung. |
| JP2981252B2 (ja) * | 1990-03-28 | 1999-11-22 | 株式会社東芝 | 消磁回路 |
| EP0477399A1 (de) * | 1990-09-25 | 1992-04-01 | Siemens Aktiengesellschaft | Einrichtung zur Entmagnetisierung einer Bildröhre |
-
1993
- 1993-08-31 ES ES9301880A patent/ES2078860B1/es not_active Expired - Lifetime
-
1994
- 1994-08-30 WO PCT/ES1994/000082 patent/WO1995007006A1/es not_active Ceased
- 1994-08-30 AU AU75377/94A patent/AU7537794A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| ES2078860A2 (es) | 1995-12-16 |
| ES2078860B1 (es) | 1997-11-16 |
| WO1995007006A1 (es) | 1995-03-09 |
| AU7537794A (en) | 1995-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EC2A | Search report published |
Date of ref document: 19951216 Kind code of ref document: R Effective date: 19951216 |
|
| FA2A | Application withdrawn |
Effective date: 19980806 |