GB938407A - Improvements in or relating to rectifying circuit arrangements including semi-conducting elements - Google Patents
Improvements in or relating to rectifying circuit arrangements including semi-conducting elementsInfo
- Publication number
- GB938407A GB938407A GB260/62A GB26062A GB938407A GB 938407 A GB938407 A GB 938407A GB 260/62 A GB260/62 A GB 260/62A GB 26062 A GB26062 A GB 26062A GB 938407 A GB938407 A GB 938407A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- relay
- photo
- series
- resistance
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1203—Circuits independent of the type of conversion
- H02H7/1206—Circuits independent of the type of conversion specially adapted to conversion cells composed of a plurality of parallel or serial connected elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
938,407. Protective arrangements. PHILIPS ELECTRICAL INDUSTRIES Ltd. Jan. 3, 1962 [Jan. 6, 1961], No. 260/62. Class 38 (5). [Also in Groups XXXV and XL (b)] In a protective arrangement for a rectifier comprising a plurality of semi-conductor rectifying elements D 1 , a glow-discharge lamp L in series with a resistor R 1 is connected in parallel with each element D 1 , and a photo-resistance element W is arranged in proximity to each lamp L, the elements W being connected in series with a relay circuit adapted to operate alarm and/or safety means. In the arrangement shown, constant resistances R 2 are connected in parallel with the photo-resistance elements W which are connected in series with resistors R 3 ... R 5 across a half-wave rectified A.C. supply. Under normal conditions the lamps L are lit by the inverse voltages across the elements D 1 and the resistances of the elements W are low so that the potentials across the resistors R 4 , R 5 are sufficient to ignite two relay tubes B 1 , B 2 and relays S 1 , S 2 are energized. Should one element D 1 fail, the associated glowdischarge lamp L is extinguished causing the associated photo-resistance element to increase its resistance and reduce the potential across the resistor R 5 . Relay tube B 1 no longer ignites and relay S 1 releases to cause an alarm to be given. Should two elements D 1 fail, then the reduction in potential across the resistors R 4 , R 5 is such that the tube B 2 no longer ignites and relay S 2 releases and causes the interruption of the supply circuit. A fuse F may be provided in each branch of series-connected rectifier elements D 1 . Fig. 2 shows how the lamps L and photo-resistance elements W are mounted in recesses in an opaque block 1 of synthetic resin with a hood 2 so that the lamps L are visible but the elements W are shielded from external light.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL259823 | 1961-01-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB938407A true GB938407A (en) | 1963-10-02 |
Family
ID=19752801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB260/62A Expired GB938407A (en) | 1961-01-06 | 1962-01-03 | Improvements in or relating to rectifying circuit arrangements including semi-conducting elements |
Country Status (5)
Country | Link |
---|---|
US (1) | US3238520A (en) |
CH (1) | CH412090A (en) |
DE (1) | DE1145270B (en) |
GB (1) | GB938407A (en) |
NL (2) | NL259823A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3508135A (en) * | 1967-11-21 | 1970-04-21 | Philips Corp | Device comprising a plurality of series-arranged,semiconductor controlled rectifiers |
SE360227B (en) * | 1972-02-01 | 1973-09-17 | Asea Ab | |
SE364826B (en) * | 1972-07-10 | 1974-03-04 | Asea Ab | |
US4415884A (en) * | 1981-10-07 | 1983-11-15 | Combustion Engineering, Inc. | Diagnostic circuit for programmable logic safety control systems |
ZA827794B (en) * | 1981-11-14 | 1983-09-28 | Westinghouse Brake & Signal | Testing operability of a semiconductor device |
US4471301A (en) * | 1981-12-11 | 1984-09-11 | Vsesojuzny Elektrotekhnichesky Institut | Device for monitoring thyristors of high-voltage valve |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1922188A (en) * | 1927-06-16 | 1933-08-15 | Westinghouse Electric & Mfg Co | Inspection device |
US1940882A (en) * | 1930-07-30 | 1933-12-26 | Westinghouse Electric & Mfg Co | Sorting apparatus |
DE744206C (en) * | 1939-03-01 | 1944-01-20 | Siemens Ag | Protection device for switchgear against damage by free-burning short-circuit arcs |
US2398366A (en) * | 1943-01-18 | 1946-04-16 | Cutler Hammer Inc | Rectified current flow indicating system |
US3040178A (en) * | 1957-07-09 | 1962-06-19 | Westinghouse Electric Corp | Logic circuitry |
US2982904A (en) * | 1957-08-21 | 1961-05-02 | Licentia Gmbh | Rectifiers |
US2941187A (en) * | 1957-12-30 | 1960-06-14 | Luther G Simjian | Apparatus and method for determining the character of a document |
US3172093A (en) * | 1959-02-12 | 1965-03-02 | Int Rectifier Corp | Monitoring arrangement for power converter |
DE1116315B (en) * | 1960-09-23 | 1961-11-02 | Siemens Ag | Rectifier arrangement |
US3135950A (en) * | 1961-08-14 | 1964-06-02 | Sam M Finkle | Fire detecting unit |
-
0
- NL NL112395D patent/NL112395C/xx active
- NL NL259823D patent/NL259823A/xx unknown
-
1962
- 1962-01-03 GB GB260/62A patent/GB938407A/en not_active Expired
- 1962-01-03 CH CH3262A patent/CH412090A/en unknown
- 1962-01-03 DE DEN21022A patent/DE1145270B/en active Pending
- 1962-01-04 US US164260A patent/US3238520A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL112395C (en) | |
US3238520A (en) | 1966-03-01 |
DE1145270B (en) | 1963-03-14 |
NL259823A (en) | |
CH412090A (en) | 1966-04-30 |
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