GB2002984A - Improved television receiver line deflection output stage - Google Patents
Improved television receiver line deflection output stageInfo
- Publication number
- GB2002984A GB2002984A GB7833798A GB7833798A GB2002984A GB 2002984 A GB2002984 A GB 2002984A GB 7833798 A GB7833798 A GB 7833798A GB 7833798 A GB7833798 A GB 7833798A GB 2002984 A GB2002984 A GB 2002984A
- Authority
- GB
- United Kingdom
- Prior art keywords
- primary
- transformer
- current
- scanning
- switch
- 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
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
- H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
- H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
- H03K4/60—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor
- H03K4/62—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor using a semiconductor device operating as a switching device
Landscapes
- Details Of Television Scanning (AREA)
Abstract
A television receiver's line deflection output stage circuit arrangement for developing in a deflection yoke a sawtooth waveform current, comprising scanning and return portions, comprising an input transformer with primary and secondary windings, a primary switch for connecting the primary winding of the input transformer to a power supply and a bidirectional secondary switch to connect the deflection yoke during the scanning stroke to a scanning capacitor having the scanning voltage and to connect the energy storage condenser to the secondary coil of the transformer, the improvement being that the mutual polarities of the primary and secondary windings of the transformer being such that following turn- off of the secondary switch the return pulse appearing on the secondary winding induces through the transformer in the primary winding a current, which nullifies the current in the primary winding and so nullifies the current in the primary switch. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI772461A FI55278C (en) | 1977-08-18 | 1977-08-18 | KOPPLING VID ETT LINJESLUTSTEG I EN TELEVISIONSMOTTAGARE |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2002984A true GB2002984A (en) | 1979-02-28 |
GB2002984B GB2002984B (en) | 1982-03-10 |
Family
ID=8511022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7833798A Expired GB2002984B (en) | 1977-08-18 | 1978-08-18 | Television receiver line deflection output stage |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2835946B2 (en) |
FI (1) | FI55278C (en) |
GB (1) | GB2002984B (en) |
IT (1) | IT1115572B (en) |
SE (1) | SE438399B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0033678A1 (en) * | 1980-01-31 | 1981-08-12 | Videocolor | Maintenance method for an electrical oscillating circuit and horizontal deflection device for a cathode ray tube using this method |
FR2477813A2 (en) * | 1980-03-05 | 1981-09-11 | Oceanic Sa | HORIZONTAL SCAN CIRCUIT FOR TELEVISION RECEIVER |
FR2493650A1 (en) * | 1980-11-05 | 1982-05-07 | Videocolor | TV CRT line scan oscillation maintenance system - uses controlled switching of line output transformer windings and DC supply to power all TV circuits |
US4484113A (en) * | 1981-02-16 | 1984-11-20 | Rca Corporation | Regulated deflection circuit |
US4524411A (en) * | 1982-09-29 | 1985-06-18 | Rca Corporation | Regulated power supply circuit |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1140711B (en) * | 1979-03-12 | 1986-10-01 | Rca Corp | SWITCHING STABILIZER, ISOLATED FROM THE POWER SUPPLY, FOR A TRANSISTORIZED DEFLECTION CIRCUIT |
FI60626C (en) * | 1979-08-14 | 1982-02-10 | Salora Oy | STROEMKAELLA |
US4298829A (en) * | 1980-02-08 | 1981-11-03 | Rca Corporation | Power supply and deflection circuit with raster size compensation |
DE3210908C2 (en) * | 1982-03-25 | 1984-05-30 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth | Synchronized switched-mode power supply with mains-separated horizontal output stage circuit in television receivers |
DE3328181C1 (en) * | 1983-08-04 | 1984-05-24 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth | Standby operation with a horizontal Talendstufenschaltung combined with a switching power supply |
-
1977
- 1977-08-18 FI FI772461A patent/FI55278C/en not_active IP Right Cessation
-
1978
- 1978-08-07 SE SE7808441A patent/SE438399B/en not_active IP Right Cessation
- 1978-08-17 IT IT68921/78A patent/IT1115572B/en active
- 1978-08-17 DE DE2835946A patent/DE2835946B2/en not_active Ceased
- 1978-08-18 GB GB7833798A patent/GB2002984B/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0033678A1 (en) * | 1980-01-31 | 1981-08-12 | Videocolor | Maintenance method for an electrical oscillating circuit and horizontal deflection device for a cathode ray tube using this method |
FR2477813A2 (en) * | 1980-03-05 | 1981-09-11 | Oceanic Sa | HORIZONTAL SCAN CIRCUIT FOR TELEVISION RECEIVER |
FR2493650A1 (en) * | 1980-11-05 | 1982-05-07 | Videocolor | TV CRT line scan oscillation maintenance system - uses controlled switching of line output transformer windings and DC supply to power all TV circuits |
US4484113A (en) * | 1981-02-16 | 1984-11-20 | Rca Corporation | Regulated deflection circuit |
US4524411A (en) * | 1982-09-29 | 1985-06-18 | Rca Corporation | Regulated power supply circuit |
Also Published As
Publication number | Publication date |
---|---|
SE438399B (en) | 1985-04-15 |
SE7808441L (en) | 1979-02-19 |
DE2835946A1 (en) | 1979-02-22 |
IT1115572B (en) | 1986-02-03 |
FI55278B (en) | 1979-02-28 |
FI55278C (en) | 1979-06-11 |
DE2835946B2 (en) | 1980-01-10 |
IT7868921A0 (en) | 1978-08-17 |
GB2002984B (en) | 1982-03-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930818 |