GB1146356A - Improvements in magnetic scanning circuits for electron beam tubes - Google Patents
Improvements in magnetic scanning circuits for electron beam tubesInfo
- Publication number
- GB1146356A GB1146356A GB3266366A GB3266366A GB1146356A GB 1146356 A GB1146356 A GB 1146356A GB 3266366 A GB3266366 A GB 3266366A GB 3266366 A GB3266366 A GB 3266366A GB 1146356 A GB1146356 A GB 1146356A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- deflection
- sawtooth
- pulses
- autotransformer
- 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
- 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
-
- 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
- H03K4/90—Linearisation of ramp; Synchronisation of pulses
Landscapes
- Details Of Television Scanning (AREA)
Abstract
1,146,356. Transistor sawtooth circuits. COMPAGNIE FRANCAISE THOMSON HOUSTON - HOTCHKISS BRANDT. 20 July, 1966 [20 July, 1965], No. 32663/66. Heading H3T. In a magnetic deflection circuit for a cathoderay tube, of the type in which errors due to the resistance R of the deflection coils 4 are corrected by feeding an additional sawtooth waveform to the coils, the main deflection and additional deflection waveforms are coupled to the coils via a common autotransformer. As shown, sawtooth current in deflection coils 4 is initiated by pulses fed to the base of transistor T1, the resulting negative pulses at the collector being coupled by the autotransformer aTr. Pulses induced in an auxiliary winding n3 are integrated at 3 to provide a sawtooth waveform which is amplified by the feedback amplifier comprising transistors T2, T3 and fed via the autotransformer aTr to correct the error due to resistance R. The scan amplitude is adjustable by the biascontrolling potentiometer P1. In Fig. 2 (not shown) the tappings connecting transistors T1 and coils 4 are interchanged, the auxiliary sawtooth voltage being provided by integrating the pulses at the collector of T1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR898933A FR1332609A (en) | 1962-05-28 | 1962-05-28 | Enhancements to Magnetic Scanning Circuits |
| FR25297A FR88389E (en) | 1962-05-28 | 1965-07-20 | Enhancements to Magnetic Scanning Circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1146356A true GB1146356A (en) | 1969-03-26 |
Family
ID=26164895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3266366A Expired GB1146356A (en) | 1962-05-28 | 1966-07-20 | Improvements in magnetic scanning circuits for electron beam tubes |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1539791A1 (en) |
| FR (2) | FR1332609A (en) |
| GB (1) | GB1146356A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1281487B (en) * | 1967-12-08 | 1968-10-31 | Telefunken Patent | Vertical deflection circuit, especially for a television receiver |
| US4297620A (en) * | 1980-03-10 | 1981-10-27 | Ampex Corporation | Quasi feedback horizontal scan linearization for cathode ray tubes |
-
1962
- 1962-05-28 FR FR898933A patent/FR1332609A/en not_active Expired
-
1965
- 1965-07-20 FR FR25297A patent/FR88389E/en not_active Expired
-
1966
- 1966-07-19 DE DE19661539791 patent/DE1539791A1/en active Pending
- 1966-07-20 GB GB3266366A patent/GB1146356A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1539791A1 (en) | 1970-04-09 |
| DE1464497B2 (en) | 1971-02-04 |
| FR88389E (en) | 1967-01-27 |
| DE1464497A1 (en) | 1968-12-05 |
| FR1332609A (en) | 1963-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1202307A (en) | A deflection circuit for a cathode ray tube | |
| GB1060023A (en) | Focusing circuit for cathode ray tube | |
| GB1146356A (en) | Improvements in magnetic scanning circuits for electron beam tubes | |
| GB1261520A (en) | Improvements in and relating to power supply arrangements for cathode ray tubes | |
| GB1045342A (en) | Circuit arrangement for producing voltages of sawtooth waveform | |
| GB1157725A (en) | Transistor Deflection Circuits for use with Cathode Ray Tubes | |
| US3403288A (en) | Dynamic intensity corrections circuit | |
| GB908755A (en) | Improvements in or relating to circuit arrangements for dynamic focusing in cathode-ray tubes | |
| GB1043376A (en) | Circuit for controlling beam deflection in cathode ray tubes | |
| GB1008998A (en) | Dynamic focus circuit | |
| GB1270342A (en) | Beam deflection means for cathode ray tube systems | |
| US3109122A (en) | Deflection amplifier | |
| US3706907A (en) | Deflection circuit with means for generating correction waveform | |
| GB1361756A (en) | Linearity correction circuit suitable for cathode ray tubes | |
| GB997222A (en) | Improvements in and relating to cathode ray tube apparatus | |
| JPS54152912A (en) | Deflection output circuit | |
| GB1220687A (en) | Improvements in or relating to electro-magnetic deflection coil arrangements for cathode ray tubes | |
| GB995418A (en) | Improvements relating to circuits for generating sawtooth waveform currents | |
| GB867281A (en) | Improvements in or relating to deflection systems for cathode ray tubes | |
| GB1174183A (en) | Improvements in and relating to circuit arrangements for the correction of pin cushion distortion in display tubes | |
| GB798776A (en) | Focussing arrangements for cathode ray tubes | |
| GB1184911A (en) | Control Circuit for Electron Beam Convergence Apparatus | |
| GB1126436A (en) | Improvements in magnetic scanning circuits for electron beam tubes | |
| GB915516A (en) | Improvements relating to high tension generating circuits for cathode ray tubes | |
| GB1215201A (en) | Improvements in or relating to deflection circuit arrangements for cathode ray tubes |