GB1499663A - Transistorised television receivers - Google Patents
Transistorised television receiversInfo
- Publication number
- GB1499663A GB1499663A GB16886/74A GB1688674A GB1499663A GB 1499663 A GB1499663 A GB 1499663A GB 16886/74 A GB16886/74 A GB 16886/74A GB 1688674 A GB1688674 A GB 1688674A GB 1499663 A GB1499663 A GB 1499663A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diode
- capacitor
- receiver
- thyristor thy1
- rectifier
- 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.)
- Expired
Links
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
1499663 Power supplies for TV receivers COMMUNICATIONS PATENTS Ltd 14 April 1975 [17 April 1974] 16886/74 Heading H2F In or for a TV receiver, a rectifier comprises a thyristor THY1 coupled between A.C. supply terminals LN and the D.C. side A and includes a Zener diode D4, resistor R3 and capacitor C1 for triggering the thyristor THY1 on each half cycle and a time delay including a diode D3 and capacitor C8 for inhibiting the operation of the thyristor THY1 for a period following switch-on of the receiver so as to allow degaussing to be effected. The rectifier preferably includes a diode D1. When the receiver is first switched on, capacitor C8 draws charging current and thereby by-passing the control circuit for thyristor THY1 for approximately half a second. An auxiliary circuit includes diode rectifier D2 for providing starting power for the line oscillator. This circuit is inhibited by diode BD 1 when the thyristor THY1 is operating.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB16886/74A GB1499663A (en) | 1974-04-17 | 1974-04-17 | Transistorised television receivers |
AU80184/75A AU490335B2 (en) | 1974-04-17 | 1975-04-15 | Improvements in or relating to transistorised television receivers |
ZA00752453A ZA752453B (en) | 1974-04-17 | 1975-04-17 | Improvements in or relating to transistorised television receivers |
MY197910A MY7900010A (en) | 1974-04-17 | 1979-12-31 | Improvements in or relating to transistorised television receivers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB16886/74A GB1499663A (en) | 1974-04-17 | 1974-04-17 | Transistorised television receivers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1499663A true GB1499663A (en) | 1978-02-01 |
Family
ID=10085459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16886/74A Expired GB1499663A (en) | 1974-04-17 | 1974-04-17 | Transistorised television receivers |
Country Status (3)
Country | Link |
---|---|
GB (1) | GB1499663A (en) |
MY (1) | MY7900010A (en) |
ZA (1) | ZA752453B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0335245A2 (en) * | 1988-03-28 | 1989-10-04 | Kabushiki Kaisha Toshiba | A method of degaussing color cathode ray tube |
GB2256757A (en) * | 1991-06-13 | 1992-12-16 | Samsung Electronics Co Ltd | Rectifier having a circuit for preventing inrush current. |
EP0533140A1 (en) * | 1991-09-20 | 1993-03-24 | Sony Corporation | Degaussing circuit with delayed generation of a vertical deflection |
US5901029A (en) * | 1988-03-28 | 1999-05-04 | Kabushiki Kaisha Toshiba | Method of degaussing a color cathode ray tube |
-
1974
- 1974-04-17 GB GB16886/74A patent/GB1499663A/en not_active Expired
-
1975
- 1975-04-17 ZA ZA00752453A patent/ZA752453B/en unknown
-
1979
- 1979-12-31 MY MY197910A patent/MY7900010A/en unknown
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0335245A2 (en) * | 1988-03-28 | 1989-10-04 | Kabushiki Kaisha Toshiba | A method of degaussing color cathode ray tube |
EP0335245A3 (en) * | 1988-03-28 | 1990-12-19 | Kabushiki Kaisha Toshiba | A method of degaussing color cathode ray tube |
US5901029A (en) * | 1988-03-28 | 1999-05-04 | Kabushiki Kaisha Toshiba | Method of degaussing a color cathode ray tube |
GB2256757A (en) * | 1991-06-13 | 1992-12-16 | Samsung Electronics Co Ltd | Rectifier having a circuit for preventing inrush current. |
GB2256757B (en) * | 1991-06-13 | 1995-07-26 | Samsung Electronics Co Ltd | A rectifier having a capacitor smoothed output and a circuit for preventing inrush current |
EP0533140A1 (en) * | 1991-09-20 | 1993-03-24 | Sony Corporation | Degaussing circuit with delayed generation of a vertical deflection |
Also Published As
Publication number | Publication date |
---|---|
ZA752453B (en) | 1976-07-28 |
AU8018475A (en) | 1976-10-21 |
MY7900010A (en) | 1979-12-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |