GB878440A - Improvements in or relating to circuit arrangements for the prevention of screen burning of a display tube in a television receiver shortly after the latter has been switched off - Google Patents
Improvements in or relating to circuit arrangements for the prevention of screen burning of a display tube in a television receiver shortly after the latter has been switched offInfo
- Publication number
- GB878440A GB878440A GB1181560A GB1181560A GB878440A GB 878440 A GB878440 A GB 878440A GB 1181560 A GB1181560 A GB 1181560A GB 1181560 A GB1181560 A GB 1181560A GB 878440 A GB878440 A GB 878440A
- Authority
- GB
- United Kingdom
- Prior art keywords
- television receiver
- relating
- prevention
- switched
- display tube
- 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
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/20—Prevention of damage to cathode-ray tubes in the event of failure of scanning
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
878,440. Cathode-ray tube circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. April 4, 1960 [April 7, 1959], No. 11815/60. Class 40(7) In order to reduce brightness modulation arising from grid-cathode bias variation with H.T. voltage due to mains voltage fluctuation, a television receiver C.R.T. screen burn protection circuit, of the kind in which the beam current is maintained after switching off in order to discharge the final anode smoothing capacitor rapidly, includes a voltage-dependent resistor 15 in series with capacitor 14.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL237887A NL107585C (en) | 1959-04-07 | 1959-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB878440A true GB878440A (en) | 1961-09-27 |
Family
ID=19851487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1181560A Expired GB878440A (en) | 1959-04-07 | 1960-04-04 | Improvements in or relating to circuit arrangements for the prevention of screen burning of a display tube in a television receiver shortly after the latter has been switched off |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE589426A (en) |
DE (1) | DE1108263B (en) |
DK (1) | DK93747C (en) |
FR (1) | FR1253146A (en) |
GB (1) | GB878440A (en) |
NL (1) | NL107585C (en) |
-
1959
- 1959-04-07 NL NL237887A patent/NL107585C/xx active
-
1960
- 1960-04-04 DE DEN18114A patent/DE1108263B/en active Pending
- 1960-04-04 GB GB1181560A patent/GB878440A/en not_active Expired
- 1960-04-04 DK DK129460A patent/DK93747C/en active
- 1960-04-05 BE BE589426A patent/BE589426A/en unknown
- 1960-04-06 FR FR823545A patent/FR1253146A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1253146A (en) | 1961-02-03 |
DK93747C (en) | 1962-06-25 |
NL237887A (en) | |
BE589426A (en) | 1960-10-05 |
DE1108263B (en) | 1961-06-08 |
NL107585C (en) | 1964-03-16 |
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