GB1465772A - Circuit arrangements for television receivers - Google Patents
Circuit arrangements for television receiversInfo
- Publication number
- GB1465772A GB1465772A GB2286074A GB2286074A GB1465772A GB 1465772 A GB1465772 A GB 1465772A GB 2286074 A GB2286074 A GB 2286074A GB 2286074 A GB2286074 A GB 2286074A GB 1465772 A GB1465772 A GB 1465772A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- stage
- transistor
- line
- vertical deflection
- 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
-
- 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
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
- Television Receiver Circuits (AREA)
Abstract
1465772 Automatic voltage control LICENTIA PATENT VERWALTUNGS GmbH 22 May 1974 [24 May 1973] 22860/74 Heading G3R [Also in Divisions H2 and H3] In a television receiver, the main supply voltage is connected across the series combination of a transistor line output stage and a vertical deflection stage. That portion of the voltage appearing across the line output stage is automatically stabilized. As shown, a line transformer 6 and transistor 9 connected to picture tube 15 and line deflection coils 14 are supplied from a mains rectifier circuit 2. The voltage across terminals 3, 27 is regulated by a circuit 19-23 which produces a control voltage U S to vary the effective impedance of a series transistor 17. The emitter of transistor 17 is connected to vertical deflection stage 38 which includes push-pull transistors 43, 44 driven by synchronizing pulses 47 and connected to deflection coils 42. A capacitor 48 short circuits line frequency signals. The other terminal 40 of the stage 38 is connected to earth through a Zener diode 28 which provides a regulated voltage for an audio output stage 34. An additional current i 4 , / derived from transformer 6, may be fed to the Zener diode 28 to ensure continuous conduction. A voltage limiting device may be connected across the vertical deflection stage 38.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732326399 DE2326399C3 (en) | 1972-11-30 | 1973-05-24 | Circuit for stabilizing the operating voltage for the line output transistor in a television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1465772A true GB1465772A (en) | 1977-03-02 |
Family
ID=5881969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2286074A Expired GB1465772A (en) | 1973-05-24 | 1974-05-22 | Circuit arrangements for television receivers |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5021618A (en) |
| BR (1) | BR7404244D0 (en) |
| GB (1) | GB1465772A (en) |
| IT (1) | IT1012189B (en) |
-
1974
- 1974-05-08 IT IT2247374A patent/IT1012189B/en active
- 1974-05-20 JP JP49056449A patent/JPS5021618A/ja active Pending
- 1974-05-22 GB GB2286074A patent/GB1465772A/en not_active Expired
- 1974-05-23 BR BR424474A patent/BR7404244D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT1012189B (en) | 1977-03-10 |
| BR7404244D0 (en) | 1975-01-21 |
| JPS5021618A (en) | 1975-03-07 |
| AU6812674A (en) | 1975-10-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |