GB715489A - Improvements in or relating to e.h.t. systems - Google Patents
Improvements in or relating to e.h.t. systemsInfo
- Publication number
- GB715489A GB715489A GB2889551A GB2889551A GB715489A GB 715489 A GB715489 A GB 715489A GB 2889551 A GB2889551 A GB 2889551A GB 2889551 A GB2889551 A GB 2889551A GB 715489 A GB715489 A GB 715489A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- pulse
- valve
- rectified
- vibrator
- 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
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Measuring Volume Flow (AREA)
Abstract
715,489. Automatic voltage control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 9, 1952 [Dec, 10, 1951], No. 28895/51. Class 38(4) In a pulse controlled current interrupted inductor E.H.T. system the voltage induced in a secondary coil coupled to the E.H.T. generating coil in the anode circuit of the pulsed valve is rectified and utilized to vary the pulse frequency to maintain constant E.H.T. In Fig. 2 a multi-vibrator, associated with valves 11 and 12, applies pulses to the grid circuit of a valve 4 so that a high voltage is produced across an anode inductance 7. This voltage, which is rectified by a diode 9 to produce an E.H.T. supply, e.g. for the cathode-ray tube in a television receiver, is maintained constant by providing inductance 7 with a secondary winding 25 the voltage induced in which is applied to a negativey biased diode 27 so that, when the E.H.T. voltage rises above a predetermined desired value, a direct voltage is developed across a resistor 29 to correct the E.H.T. voltage by applying grid bias to valve 11 and thereby controlling pulse periodicity of the multivibrator. In a modification, Fig. 4 (not shown), a blocking oscillator, the pulse periodicity of which is also controlled by grid bias, replaces the multi-vibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2889551A GB715489A (en) | 1951-12-10 | 1951-12-10 | Improvements in or relating to e.h.t. systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2889551A GB715489A (en) | 1951-12-10 | 1951-12-10 | Improvements in or relating to e.h.t. systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB715489A true GB715489A (en) | 1954-09-15 |
Family
ID=10282919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2889551A Expired GB715489A (en) | 1951-12-10 | 1951-12-10 | Improvements in or relating to e.h.t. systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB715489A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1282767B (en) * | 1963-08-29 | 1968-11-14 | Smith & Sons Ltd S | Electrical snap switch |
-
1951
- 1951-12-10 GB GB2889551A patent/GB715489A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1282767B (en) * | 1963-08-29 | 1968-11-14 | Smith & Sons Ltd S | Electrical snap switch |
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