GB491751A - Improvements relating to grid controlled valve converting apparatus - Google Patents
Improvements relating to grid controlled valve converting apparatusInfo
- Publication number
- GB491751A GB491751A GB2091037A GB2091037A GB491751A GB 491751 A GB491751 A GB 491751A GB 2091037 A GB2091037 A GB 2091037A GB 2091037 A GB2091037 A GB 2091037A GB 491751 A GB491751 A GB 491751A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathodes
- transformer
- valves
- arrangement
- potential
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/02—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters
- H02M1/04—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control
- H02M1/042—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control wherein the phase of the control voltage is adjustable with reference to the AC voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/02—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters
- H02M1/04—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control
- H02M1/042—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control wherein the phase of the control voltage is adjustable with reference to the AC voltage
- H02M1/045—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control wherein the phase of the control voltage is adjustable with reference to the AC voltage for multiphase systems
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
Abstract
491,751. Converting. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, and LAMM, U. July 28, 1937, No. 20910. [Class 38 (ii)] Relates to a " floating " grid system of the kind described in Specification 412,773 and consists in the provision of means to enable such a system to be employed with valves the cathodes of which are not at the same operating potential. To effect compensation a potential equal to and opposite to that between the cathodes is injected into the grid circuit. In the form shown in Fig. 1 comprising a rectifying arrangement in Graetz connection the control of the upper pair of valves 1, 4, the cathodes of which are connected to the secondary 7 of the supply transformer 6, is effected from the secondary 9 of a control transformer 18 fed from a phase shifting transformer 12 and compensation is effected by including in series in the grid circuit an auxiliary secondary 8 of the main transformer 6, this winding giving a potential equal to and opposite to that of the main secondary 7. A polyphase Graetz connected rectifier and a polyphase frequency changer are also described. In the rectifier arrangement .the two groups of valves are controlled separately from two phase shifting transformers. Fig. 3 shows an arrangement in which the A.C. supply is connected between the cathodes of the discharge devices 46, 47 in series with a source 59 of D.C. The grid circuit contains a condenser 53 which during operation charges to a potential difference equal to that of the D.C. source 59. The condenser 53 may be charged from an external source.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE429358D BE429358A (en) | 1937-07-28 | ||
| GB2091037A GB491751A (en) | 1937-07-28 | 1937-07-28 | Improvements relating to grid controlled valve converting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2091037A GB491751A (en) | 1937-07-28 | 1937-07-28 | Improvements relating to grid controlled valve converting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB491751A true GB491751A (en) | 1938-09-08 |
Family
ID=10153867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2091037A Expired GB491751A (en) | 1937-07-28 | 1937-07-28 | Improvements relating to grid controlled valve converting apparatus |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE429358A (en) |
| GB (1) | GB491751A (en) |
-
0
- BE BE429358D patent/BE429358A/xx unknown
-
1937
- 1937-07-28 GB GB2091037A patent/GB491751A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE429358A (en) |
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