GB1125487A - Energising circuit for automatic degaussing apparatus - Google Patents
Energising circuit for automatic degaussing apparatusInfo
- Publication number
- GB1125487A GB1125487A GB2147066A GB2147066A GB1125487A GB 1125487 A GB1125487 A GB 1125487A GB 2147066 A GB2147066 A GB 2147066A GB 2147066 A GB2147066 A GB 2147066A GB 1125487 A GB1125487 A GB 1125487A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- series
- via contacts
- shield
- circuit
- 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)
- Processing Of Color Television Signals (AREA)
Abstract
1,125,487. Cathode-ray tube circuits. RADIO CORPORATION OF AMERICA. 13 May, 1966 [24 May, 1965], No. 21470/66. Heading H4T. Degaussing coils 13, 14, Figs. 1 and 2, for a shadow-mask colour television tube are connected in series with the A.C. input to the power supply rectifier circuit which utilizes a capacitive filtering network so that, on switching-on, the surge of charging current into the initially completely discharged capacitors 24, 25 produces an alternating magnetic field the magnitude of which is progressively reduced as the capacitors charge. Shortly after they become fully charged a thermal switch 28, connected in series with the heater winding 26, is operated to short-circuit the coils via contacts 31 and to connect D.C. operating potentials +B1, +B2 to the receiver via contacts 32 and 33. The coils 13, 14 are mounted on a magnetic shield 12 of ferrous metal with the foward portions encircling the shield on the outside and the rear portions disposed on the inside.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45796665A | 1965-05-24 | 1965-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1125487A true GB1125487A (en) | 1968-08-28 |
Family
ID=23818792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2147066A Expired GB1125487A (en) | 1965-05-24 | 1966-05-13 | Energising circuit for automatic degaussing apparatus |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT265378B (en) |
| BE (1) | BE681456A (en) |
| DE (1) | DE1294993B (en) |
| ES (1) | ES326991A1 (en) |
| GB (1) | GB1125487A (en) |
| NL (1) | NL6607043A (en) |
| SE (1) | SE322261B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2962621A (en) * | 1958-10-10 | 1960-11-29 | Westinghouse Electric Corp | Color television apparatus |
-
1966
- 1966-05-13 GB GB2147066A patent/GB1125487A/en not_active Expired
- 1966-05-17 SE SE679466A patent/SE322261B/xx unknown
- 1966-05-20 DE DE1966R0043302 patent/DE1294993B/en active Pending
- 1966-05-21 ES ES0326991A patent/ES326991A1/en not_active Expired
- 1966-05-23 BE BE681456D patent/BE681456A/xx unknown
- 1966-05-23 NL NL6607043A patent/NL6607043A/xx unknown
- 1966-05-24 AT AT488966A patent/AT265378B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE1294993B (en) | 1969-05-14 |
| AT265378B (en) | 1968-10-10 |
| ES326991A1 (en) | 1967-03-16 |
| BE681456A (en) | 1966-10-31 |
| NL6607043A (en) | 1966-11-25 |
| SE322261B (en) | 1970-04-06 |
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