GB457929A - Improvements in or relating to cathode ray tube apparatus - Google Patents
Improvements in or relating to cathode ray tube apparatusInfo
- Publication number
- GB457929A GB457929A GB16724/35A GB1672435A GB457929A GB 457929 A GB457929 A GB 457929A GB 16724/35 A GB16724/35 A GB 16724/35A GB 1672435 A GB1672435 A GB 1672435A GB 457929 A GB457929 A GB 457929A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- coils
- grid
- cathode ray
- ray tube
- 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
- 229910052754 neon Inorganic materials 0.000 abstract 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 abstract 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000003534 oscillatory effect Effects 0.000 abstract 1
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
- H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
- H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
- H03K4/28—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device
Landscapes
- Details Of Television Scanning (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
457,929. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BANKS, G. B., Electra House, Victoria Embankment, London. June 8, 1935, No. 16724. [Classes 40 (iii) and 40 (v)] The deflecting coils 2, Fig. 1, of a cathode ray tube are short-circuited during the 'flyback ' periods to eliminate effects due to the self-inductance of the coils and so allow an oscillatory voltage of saw-tooth wave form to be applied to them. A neon tube 1 is connected in shunt with the coils so as to discharge during the fly-back periods. The neon tube may be replaced by a grid-controlled tube 10, Fig. 2, so that the breakdown voltage of the tube may be adjusted by varying the grid bias. Alternatively, the synchronizing impulses may be applied to the grid to cause the tube to discharge.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16724/35A GB457929A (en) | 1935-06-08 | 1935-06-08 | Improvements in or relating to cathode ray tube apparatus |
| US83196A US2170847A (en) | 1935-06-08 | 1936-06-03 | Electron beam deflection circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16724/35A GB457929A (en) | 1935-06-08 | 1935-06-08 | Improvements in or relating to cathode ray tube apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB457929A true GB457929A (en) | 1936-12-08 |
Family
ID=10082503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16724/35A Expired GB457929A (en) | 1935-06-08 | 1935-06-08 | Improvements in or relating to cathode ray tube apparatus |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2170847A (en) |
| GB (1) | GB457929A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2429809A (en) * | 1942-09-17 | 1947-10-28 | Gen Electric | Radio locating equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE479720A (en) * | 1942-07-24 | |||
| GB614557A (en) * | 1946-05-20 | 1948-12-17 | Ian Stuart Forbes | Improvements in or relating to operating voltage supply arrangements for cathode ray tube apparatus |
-
1935
- 1935-06-08 GB GB16724/35A patent/GB457929A/en not_active Expired
-
1936
- 1936-06-03 US US83196A patent/US2170847A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2429809A (en) * | 1942-09-17 | 1947-10-28 | Gen Electric | Radio locating equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| US2170847A (en) | 1939-08-29 |
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