FR2301141A1 - Horizontal scanning circuit for television receiver - also acting as chopper circuit uses transformer as storage inductance - Google Patents
Horizontal scanning circuit for television receiver - also acting as chopper circuit uses transformer as storage inductanceInfo
- Publication number
- FR2301141A1 FR2301141A1 FR7504827A FR7504827A FR2301141A1 FR 2301141 A1 FR2301141 A1 FR 2301141A1 FR 7504827 A FR7504827 A FR 7504827A FR 7504827 A FR7504827 A FR 7504827A FR 2301141 A1 FR2301141 A1 FR 2301141A1
- Authority
- FR
- France
- Prior art keywords
- horizontal scanning
- acting
- circuit
- television receiver
- transformer
- 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.)
- Granted
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
Abstract
The combined horizontal scanning circuit and chopper circuit is used for a black and white or colour television. The circuit does not include a low-pass filter, while the primary winding (9) of the VHT transformer (10) also acts as the energy storage inductance. The supply of electric current is regulated in accordance with the line return voltage. A diode (1) has its anode connected to one of the terminals of an Al source (2), while its cathode is connected to the collector of a transistor (6). The emitter of this transistor is connected to the primary winding of the VHT transformer. The second terminal of this primary winding is connected to the emitter of a second transistor (11) and in parallel to capacitors (16, 18) and an inductance (17).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7504827A FR2301141A1 (en) | 1975-02-17 | 1975-02-17 | Horizontal scanning circuit for television receiver - also acting as chopper circuit uses transformer as storage inductance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7504827A FR2301141A1 (en) | 1975-02-17 | 1975-02-17 | Horizontal scanning circuit for television receiver - also acting as chopper circuit uses transformer as storage inductance |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2301141A1 true FR2301141A1 (en) | 1976-09-10 |
FR2301141B1 FR2301141B1 (en) | 1980-03-07 |
Family
ID=9151304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7504827A Granted FR2301141A1 (en) | 1975-02-17 | 1975-02-17 | Horizontal scanning circuit for television receiver - also acting as chopper circuit uses transformer as storage inductance |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2301141A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2404357A1 (en) * | 1977-09-23 | 1979-04-20 | Oceanic Sa | Scan control circuit for TV receiver - has operation of power input switch timed according to input voltage |
-
1975
- 1975-02-17 FR FR7504827A patent/FR2301141A1/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2404357A1 (en) * | 1977-09-23 | 1979-04-20 | Oceanic Sa | Scan control circuit for TV receiver - has operation of power input switch timed according to input voltage |
Also Published As
Publication number | Publication date |
---|---|
FR2301141B1 (en) | 1980-03-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |