GB1207262A - Voltage stabilising circuit - Google Patents
Voltage stabilising circuitInfo
- Publication number
- GB1207262A GB1207262A GB389568A GB389568A GB1207262A GB 1207262 A GB1207262 A GB 1207262A GB 389568 A GB389568 A GB 389568A GB 389568 A GB389568 A GB 389568A GB 1207262 A GB1207262 A GB 1207262A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- derived
- pulses
- pulse
- rectification
- 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
- H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
- H04N3/185—Maintaining DC voltage constant
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
- Electrostatic Separation (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
1,207,262. E.H.T. supplies. INTERNATIONAL STANDARD ELECTRIC CORP. 25 Jan., 1968 [2 Feb., 1967], No. 3895/68. Heading H2F. In an E.H.T. stabilizing circuit, for a cathoderay tube, of the type including rectification of the output of a controllable pulse-operated power stage, the control voltage is derived by combining with opposite polarity a first voltage produced by rectification of the rear portion of pulses derived from the power stage and a second voltage derived by rectification of the front portion of said pulses. As shown, the pulseoperated power stage 27 is coupled by means not shown, to a transformer, the output of which is rectified at 31 to produce the E.H.T. voltage. A negative pulse between terminals 1 and 2 of the transformer is differentiated at 28, the positive portion of which (corresponding to the rear edge of the pulse) is rectified at 4 and combined with the output of a rectifier 8, operative on the front portion of the pulse. The combined control voltage (adjustable at 12) is superimposed on a ripple voltage (derived from a capacitive divider 15, 32) and passed via a transistor 16 and rectifier 20 to the grid of the power tube 27 where it is further combined with the drive waveform supplied via capacitor 25 and flyback pulses supplied via capacitor 22. The voltage derived from the rear portion of the pulses acts to stabilize the E.H.T. voltage against supply variations whilst that derived from the front portion of the pulses compensates for the internal impedance of the E.H.T. circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1967ST026452 DE1283879B (en) | 1967-02-02 | 1967-02-02 | Circuit for stabilizing the high voltage of cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1207262A true GB1207262A (en) | 1970-09-30 |
Family
ID=7460989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB389568A Expired GB1207262A (en) | 1967-02-02 | 1968-01-25 | Voltage stabilising circuit |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE710243A (en) |
| DE (1) | DE1283879B (en) |
| ES (1) | ES350047A1 (en) |
| FR (1) | FR1554184A (en) |
| GB (1) | GB1207262A (en) |
| NL (1) | NL6801513A (en) |
| NO (1) | NO122541B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE767678C (en) * | 1938-07-22 | 1953-03-30 | Fernseh Gmbh | Method for reducing the load dependency in a circuit for generating a high DC voltage |
| NL226174A (en) * | 1957-03-28 |
-
1967
- 1967-02-02 DE DE1967ST026452 patent/DE1283879B/en active Pending
-
1968
- 1968-01-25 GB GB389568A patent/GB1207262A/en not_active Expired
- 1968-01-31 NO NO38568A patent/NO122541B/no unknown
- 1968-02-01 ES ES350047A patent/ES350047A1/en not_active Expired
- 1968-02-02 BE BE710243D patent/BE710243A/xx unknown
- 1968-02-02 FR FR1554184D patent/FR1554184A/fr not_active Expired
- 1968-02-02 NL NL6801513A patent/NL6801513A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES350047A1 (en) | 1969-04-16 |
| NO122541B (en) | 1971-07-12 |
| DE1283879B (en) | 1968-11-28 |
| FR1554184A (en) | 1969-01-17 |
| BE710243A (en) | 1968-08-02 |
| NL6801513A (en) | 1968-08-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |