GB1187954A - Stabilisation of the Output Voltage of a Unidirectional Voltage Generating Circuit. - Google Patents
Stabilisation of the Output Voltage of a Unidirectional Voltage Generating Circuit.Info
- Publication number
- GB1187954A GB1187954A GB3808366A GB3808366A GB1187954A GB 1187954 A GB1187954 A GB 1187954A GB 3808366 A GB3808366 A GB 3808366A GB 3808366 A GB3808366 A GB 3808366A GB 1187954 A GB1187954 A GB 1187954A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- variations
- terminal
- resistor
- output
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/52—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using discharge tubes in series with the load as final control devices
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Electrical Variables (AREA)
Abstract
1,187,954. Automatic voltage control. TELEVISION INSTRUMENTS Ltd. Aug. 18, 1967 [Aug. 24, 1966] , No.38083/66. Heading G3R. The unidirectional output voltage of a generating circuit, e.g. the E.H.T. supply of a television set, is stabilized by a feedback loop which includes a reactive voltage divider network responsive to A. C. variations, such as ripple, in the stabilized output voltage, and a resistive voltage divider, including a voltage dependent resistor, responsive to D. C. variations in the output voltage. As shown, a voltage generator 1, including a pentode 5, a transformer 11, diodes 14, 15 and a capacitor 13 produces an E.H.T. voltage at output terminal 16; a stabilizing circuit 30, comprising triodes 31, 37, has an input terminal 32 connected over a feedback loop 20 to the E.H.T. terminal 16 and has its output connected to the screen grid 41 of the pentode 5 which is thereby correctively controlled in dependence upon variations in the E. H. T. output voltage as detected by the feedback loop. Alternating variations caused by ripple, for example, are detected by the capacitive voltage divider 23, 24, and are applied to the terminal 32 by way of a resistor 26 and a further capacitor 27. Steady, long term, variations are detected by the resistive voltage divider comprising a voltage dependent resistor 21, a resistor 28 and an adjustable resistor 29, the junction between resistors 21 and 28 being connected to the terminal 32. The stabilizing arrangement may be of the shunt valve type, and such an embodiment is described with reference to Fig. 2 (not shown). .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3808366A GB1187954A (en) | 1966-08-24 | 1966-08-24 | Stabilisation of the Output Voltage of a Unidirectional Voltage Generating Circuit. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3808366A GB1187954A (en) | 1966-08-24 | 1966-08-24 | Stabilisation of the Output Voltage of a Unidirectional Voltage Generating Circuit. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1187954A true GB1187954A (en) | 1970-04-15 |
Family
ID=10401057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3808366A Expired GB1187954A (en) | 1966-08-24 | 1966-08-24 | Stabilisation of the Output Voltage of a Unidirectional Voltage Generating Circuit. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1187954A (en) |
-
1966
- 1966-08-24 GB GB3808366A patent/GB1187954A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |