公开(公告)号：DE3633069A1

公开(公告)日：1987-04-09

申请号：DE3633069

申请日：1986-09-29

Applicant: RCA CORP

Inventor： FERNSLER RONALD EUGENE ,  WAYBRIGHT GEORGE CLEVELAND ,  LENDARO JEFFERY BASIL

IPC: H04N9/29

Abstract: A degaussing circuit for a video display apparatus eliminates residual degaussing current flow during operation of the video display apparatus. A capacitor is connected between coil of the degaussing relay and the source of energizing voltage. Application of the energizing voltage to the relay coil energizes the relay and initiates degaussing of the cathode ray tube of the video display apparatus, and also causes the capacitor to begin charging. As the capacitor becomes charged, the degaussing relay becomes deenergized, thereby terminating degaussing current flow. The capacitor charging time constant is selected to allow sufficient time for degaussing to occur before deenergization of the degaussing relay.

公开(公告)号：ES2001434A6

公开(公告)日：1988-05-16

申请号：ES8602092

申请日：1986-09-23

Applicant: RCA CORP

Inventor： FERNSLER RONALD EUGENE ,  WAYBRIGHT GEORGE CLEVELAN ,  LENDARO JEFFERY BASIL

IPC: H04N9/29 ,  H01J29/00 ,  H01F13/00 ,  G09G1/00

Abstract: UN CIRCUITO DESMAGNETIZADOR PARA UN APARATO DE PRESENTACION DE VIDEO QUE ELIMINA EL FLUJO DE CORRIENTE DESMAGNETIZADORA DURANTE EL FUNCIONAMIENTO DEL APARATO DE PRESENTACION DE VIDEO. UN CONDENSADOR ESTA CONECTADO ENTRE LA BOBINA DEL RELE DESMAGNETIZADOR Y LA FUENTE DE TENSION DE ALIMENTACION. LA APLICACION DE TENSION DE ALIMENTACION A LA BOBINA DE RELE EXCITA EL RELE E INICIA LA DESMAGNETIZACION DE UN TUBO DE RAYOS CATODICOS DEL APARATO DE VISUALIZACION DE VIDEO, Y ORIGINA TAMBIEN QUE EL CONDENSADOR COMIENCE A CARGARSE. CUANDO EL CONDENSADOR SE CARGA, EL RELE DESMAGNETIZADOR ALCANZA LA DESEXCITACION, CON LO QUE FINALIZA EL FLUJO DE CORRIENTE DESMAGNETIZADORA. LA CONSTANTE DE TIEMPO DE CARGA DEL CONDENSADOR SE SELECCIONA PARA DEJAR TIEMPO SUFICIENTE PARA QUE LA DESMAGNETIZACION TENGA LUGAR ANTES DE LA DESEXCITACION DEL RELE DE DESMAGNETIZACION.

公开(公告)号：FR2588117A1

公开(公告)日：1987-04-03

申请号：FR8613534

申请日：1986-09-29

Applicant: RCA CORP

Inventor： FERNSLER RONALD EUGENE ,  WAYBRIGHT GEORGE CLEVELAND ,  LENDARO JEFFERY BASIL

IPC: H04N9/29 ,  H01F13/00 ,  H01J31/20

Abstract: A degaussing circuit for a video display apparatus eliminates residual degaussing current flow during operation of the video display apparatus. A capacitor is connected between coil of the degaussing relay and the source of energizing voltage. Application of the energizing voltage to the relay coil energizes the relay and initiates degaussing of the cathode ray tube of the video display apparatus, and also causes the capacitor to begin charging. As the capacitor becomes charged, the degaussing relay becomes deenergized, thereby terminating degaussing current flow. The capacitor charging time constant is selected to allow sufficient time for degaussing to occur before deenergization of the degaussing relay.

公开(公告)号：GB2181328A

公开(公告)日：1987-04-15

申请号：GB8623350

申请日：1986-09-29

Applicant: RCA CORP

Inventor： FERNSLER RONALD EUGENE ,  WAYBRIGHT GEORGE CLEVELAND ,  LENDARO JEFFERY BASIL

IPC: H04N9/29

Abstract: A degaussing circuit for a video display apparatus eliminates residual degaussing current flow during operation of the video display apparatus. A capacitor is connected between coil of the degaussing relay and the source of energizing voltage. Application of the energizing voltage to the relay coil energizes the relay and initiates degaussing of the cathode ray tube of the video display apparatus, and also causes the capacitor to begin charging. As the capacitor becomes charged, the degaussing relay becomes deenergized, thereby terminating degaussing current flow. The capacitor charging time constant is selected to allow sufficient time for degaussing to occur before deenergization of the degaussing relay.

公开(公告)号：FR2588117B1

公开(公告)日：1992-01-10

申请号：FR8613534

申请日：1986-09-29

Applicant: RCA CORP

Inventor： FERNSLER RONALD EUGENE ,  WAYBRIGHT GEORGE CLEVELAND ,  LENDARO JEFFERY BASIL

IPC: H04N9/29 ,  H01F13/00 ,  H01J31/20

Abstract: A degaussing circuit for a video display apparatus eliminates residual degaussing current flow during operation of the video display apparatus. A capacitor is connected between coil of the degaussing relay and the source of energizing voltage. Application of the energizing voltage to the relay coil energizes the relay and initiates degaussing of the cathode ray tube of the video display apparatus, and also causes the capacitor to begin charging. As the capacitor becomes charged, the degaussing relay becomes deenergized, thereby terminating degaussing current flow. The capacitor charging time constant is selected to allow sufficient time for degaussing to occur before deenergization of the degaussing relay.

公开(公告)号：GB2181328B

公开(公告)日：1990-02-14

申请号：GB8623350

申请日：1986-09-29

Applicant: RCA CORP ,  RCA LICENSING CORP

Inventor： FERNSLER RONALD EUGENE ,  WAYBRIGHT GEORGE CLEVELAND ,  LENDARO JEFFERY BASIL

IPC: H04N9/29

Abstract: A degaussing circuit for a video display apparatus eliminates residual degaussing current flow during operation of the video display apparatus. A capacitor is connected between coil of the degaussing relay and the source of energizing voltage. Application of the energizing voltage to the relay coil energizes the relay and initiates degaussing of the cathode ray tube of the video display apparatus, and also causes the capacitor to begin charging. As the capacitor becomes charged, the degaussing relay becomes deenergized, thereby terminating degaussing current flow. The capacitor charging time constant is selected to allow sufficient time for degaussing to occur before deenergization of the degaussing relay.