GB708169A - Improvements in or relating to electrical power supplies - Google Patents
Improvements in or relating to electrical power suppliesInfo
- Publication number
- GB708169A GB708169A GB16393/52A GB1639352A GB708169A GB 708169 A GB708169 A GB 708169A GB 16393/52 A GB16393/52 A GB 16393/52A GB 1639352 A GB1639352 A GB 1639352A GB 708169 A GB708169 A GB 708169A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- voltage
- stabilizer
- grid
- valves
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Amplifiers (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
708,169. Automatic voltage control systems. MULLARD RADIO VALVE CO., Ltd. June 30, 1952, No. 16393/52. Class 38(4) A series valve type of voltage stabilizer is provided with two alternative controlling amplifier valves with different preset inputs so that the stabilizer can be rapidly switched from one preset output voltage to another. The series impedance valve 1, Fig. 1, is controlled by either of two amplifying valves 2, 3, having individually adjustable grid cottages tapped off potential dividers 10, 11, 12 and 13, 14, 15, and a common reference voltage provided by a neon stabilizer tube 8 in their common cathode circuit. A keying valve 17 in the grid/cathode circuit of valve 3 can be made conductive by a control pulse, and then valve 3 cuts off and the output voltage rises to its upper value controlled by valve 2. Conversely, with valve 17 cut off, valve 3 is conductive and the output voltage is controlled at its lower value. To reduce the change-over time, a capacitor may be provided in parallel with resistors 10 and 11 and another in parallel with resistors 13 and 14. For transient compensation of the neon stabilizer tube two series combinations each of a resistor and a capacitor may be connected in parallel with the tube, one having a time constant of approximately a tenth of the other. In a modification, Fig. 2, the control valves 2, 3 are pentodes, and the reference voltage is obtained across the resistor 31 of a cathode follower 30 having its screen voltage stabilized by a neon stabilizer 32, the voltage across which is also applied via a variable resistor 34 to the screen grids of valves 2 and 3, a portion of this latter voltage being applied also to the control grid of the cathode follower 30. Thus a variation in the screen grid current of valve 2 or 3 causes a variation in the control grid voltage of valve 30, and it is possible by adjusting the resistor 34 to make the impedance of the cathode follower as a reference voltage source substantially zero.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL94110D NL94110C (en) | 1952-06-30 | ||
| GB16393/52A GB708169A (en) | 1952-06-30 | 1952-06-30 | Improvements in or relating to electrical power supplies |
| US365067A US2752555A (en) | 1952-06-30 | 1953-06-30 | Electrical regulated power supplies |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16393/52A GB708169A (en) | 1952-06-30 | 1952-06-30 | Improvements in or relating to electrical power supplies |
| GB1006943X | 1952-06-30 | ||
| GB1021934X | 1955-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB708169A true GB708169A (en) | 1954-04-28 |
Family
ID=27257381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16393/52A Expired GB708169A (en) | 1952-06-30 | 1952-06-30 | Improvements in or relating to electrical power supplies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB708169A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1080143B (en) * | 1955-05-13 | 1960-04-21 | Philips Nv | Cathode amplifier for amplifying high negative voltage pulses with a grid-controlled high vacuum tube |
-
1952
- 1952-06-30 GB GB16393/52A patent/GB708169A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1080143B (en) * | 1955-05-13 | 1960-04-21 | Philips Nv | Cathode amplifier for amplifying high negative voltage pulses with a grid-controlled high vacuum tube |
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