GB685265A - Improvements in or relating to switching systems, more particularly back-to-back graetz rectifying systems - Google Patents
Improvements in or relating to switching systems, more particularly back-to-back graetz rectifying systemsInfo
- Publication number
- GB685265A GB685265A GB1733/51A GB173351A GB685265A GB 685265 A GB685265 A GB 685265A GB 1733/51 A GB1733/51 A GB 1733/51A GB 173351 A GB173351 A GB 173351A GB 685265 A GB685265 A GB 685265A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- arc
- fired
- positive
- auxiliary
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/15—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using discharge tubes only
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Lasers (AREA)
Abstract
685,265. Converting. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 23, 1951 [Jan. 26, 1950], No. 1733/51. Class 38 (ii). In a rectifying or other circuit comprising a number of Gratz or back-to-back connected cold cathode discharge devices, each device has an ignition electrode and an auxiliary electrode which is periodically held positive between 180 and 360 electrical degrees. A D.C. load 12 is energized from a three-phase source through ignitrons 1-6, which are fired by ignitors 9 at times selected to give the desired output voltage, e.g. at point 411 within the range 15 for valve 4 (Fig. 2). As the auxiliary anode 11 of valve 4 is held positive for time 17, the exciting arc is also fired and remains after extinction of the main arc at 16, so that this main arc can refire at 3<SP>11</SP> when the valve 3 is fired by an igniter pulse, thus avoiding the necessity for simultaneous pulses on the igniters of both valves 3, 4. Valve 2 fires at point 4 because of its holding arc. The exciting arcs cannot be retained continuously or the main arc would light automatically at 19 and no control would be possible by varying the ignition time. The positive potential of required duration applied to the auxiliary anodes may be obtained by superposing a direct voltage on an alternating voltage, Fig. 3 (not shown), or by the circuit of Fig. 4, where anode 11 receives through rectifiers 32, 33 potential from the overlapping positive halves of two phases of a three-phase supply, Fig. 4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL151277A NL77632C (en) | 1950-01-26 | 1950-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB685265A true GB685265A (en) | 1952-12-31 |
Family
ID=19875551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1733/51A Expired GB685265A (en) | 1950-01-26 | 1951-01-23 | Improvements in or relating to switching systems, more particularly back-to-back graetz rectifying systems |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2748317A (en) |
| BE (1) | BE500823A (en) |
| CH (1) | CH288265A (en) |
| DE (1) | DE896087C (en) |
| FR (1) | FR1034745A (en) |
| GB (1) | GB685265A (en) |
| NL (1) | NL77632C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899627A (en) * | 1959-08-11 | steinberg | ||
| GB1153141A (en) * | 1965-03-16 | 1969-05-21 | Nat Res Dev | Alternating Current Electric Power Control |
| US3482144A (en) * | 1967-05-12 | 1969-12-02 | Atomic Energy Commission | Phantastron drive for ignitrons |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE642511C (en) * | 1931-08-04 | 1937-03-06 | Aeg | Arrangement for controlling the passage of current in conversion devices which contain at least two series-connected, phase-shifted groups of at least two grid-controlled discharge paths, preferably vapor or gas discharge paths |
| DE588079C (en) * | 1932-06-08 | 1933-11-16 | Aeg | Arrangement for the commissioning and operational grid control of multi-phase rectifiers or inverters with an odd number of phases that work with grid-controlled vapor or gas discharge vessels in Graetz circuit |
| DE715258C (en) * | 1935-07-16 | 1941-12-17 | Siemens Ag | Circuit for the control circuits of a multi-phase converter with single-anode gas or vapor-filled discharge vessels |
| NL154268B (en) * | 1935-11-04 | Prb Sa | PROCESS FOR ISOMERIZING ALPHA ACIDS FROM HOPS. | |
| US2248625A (en) * | 1940-03-30 | 1941-07-08 | Gen Electric | Electric valve control circuit |
| DE728540C (en) * | 1940-07-26 | 1942-11-28 | Siemens Ag | Switching device for alternating current |
| BE470984A (en) * | 1941-11-26 | |||
| US2549831A (en) * | 1948-05-21 | 1951-04-24 | Westinghouse Electric Corp | Conversion system |
-
0
- BE BE500823D patent/BE500823A/xx unknown
-
1950
- 1950-01-26 NL NL151277A patent/NL77632C/xx active
-
1951
- 1951-01-04 US US204298A patent/US2748317A/en not_active Expired - Lifetime
- 1951-01-23 GB GB1733/51A patent/GB685265A/en not_active Expired
- 1951-01-23 DE DEN3413A patent/DE896087C/en not_active Expired
- 1951-01-24 FR FR1034745D patent/FR1034745A/en not_active Expired
- 1951-01-24 CH CH288265D patent/CH288265A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1034745A (en) | 1953-07-30 |
| NL77632C (en) | 1954-06-15 |
| BE500823A (en) | 1900-01-01 |
| US2748317A (en) | 1956-05-29 |
| CH288265A (en) | 1953-01-15 |
| DE896087C (en) | 1953-11-09 |
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