GB698241A - Improvements in or relating to circuits for inverting the sense of variations of a voltage - Google Patents
Improvements in or relating to circuits for inverting the sense of variations of a voltageInfo
- Publication number
- GB698241A GB698241A GB6727/50A GB672750A GB698241A GB 698241 A GB698241 A GB 698241A GB 6727/50 A GB6727/50 A GB 6727/50A GB 672750 A GB672750 A GB 672750A GB 698241 A GB698241 A GB 698241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- sense
- valve
- inverting
- pulse
- 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
-
- 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
Abstract
698,241. Automatic voltage control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 17, 1950 [March 22, 1949], No. 6727/50. Class 38 (iv). [Also in Group XL (c)] The D.C. voltage derived from a pulse source is maintained constant by feeding a fraction of the voltage over a sense or phase-inverting circuit (see Group XL (c)) to vary the bias on the valve generating the pulses. The circuit is particularly applicable to the generation of E.H.T. voltage in a television receiver. A sawtooth wave causes a valve 1 to generate pulses in inductor 3 which are rectified by diode 4 to produce a high D.C. voltage at terminal 6. A D.C. voltage is taken from the join of resistors 10, 27 and fed to the sense-inverting device 12, together with the pulse voltage. As the load is increased, the negative D.C. potential on line 11 increases, causing an increasing positive potential to be fed from the device 12 to lower the bias on valve 1 so that it passes a greater current to give a larger pulse. In a modification, Fig. 2 (not shown), the controlling voltage is derived from a potential divider across the D.C. output, and an auxiliary source of alternating voltage may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL698241X | 1949-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB698241A true GB698241A (en) | 1953-10-14 |
Family
ID=19808943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6727/50A Expired GB698241A (en) | 1949-03-22 | 1950-03-17 | Improvements in or relating to circuits for inverting the sense of variations of a voltage |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE494642A (en) |
| DE (1) | DE965251C (en) |
| FR (1) | FR1014837A (en) |
| GB (1) | GB698241A (en) |
| NL (1) | NL81593C (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE327122C (en) * | 1920-10-07 | C H F Mueller Spezialfabrik Fu | Device for extracting phase parts from an alternating current | |
| DE598600C (en) * | 1928-07-13 | 1934-06-14 | Aeg | Device for regulating the direct current power of arc rectifiers |
| DE716233C (en) * | 1931-04-29 | 1942-01-15 | Aeg | Device for regulating the direct current power of arc rectifiers with control electrodes |
| DE662277C (en) * | 1934-01-18 | 1938-07-09 | Aeg | Arrangement for reducing the torque-dependent change in speed of direct current motors fed by grid-controlled rectifiers |
-
0
- NL NL81593D patent/NL81593C/xx active
- BE BE494642D patent/BE494642A/xx unknown
-
1950
- 1950-03-17 GB GB6727/50A patent/GB698241A/en not_active Expired
- 1950-03-19 DE DEN636A patent/DE965251C/en not_active Expired
- 1950-03-20 FR FR1014837D patent/FR1014837A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE965251C (en) | 1957-06-06 |
| FR1014837A (en) | 1952-08-22 |
| NL81593C (en) | |
| BE494642A (en) |
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