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 elements

Info

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
Application number
GB260/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB938407A publication Critical patent/GB938407A/en
Expired legal-status Critical Current

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.
GB260/62A 1961-01-06 1962-01-03 Improvements in or relating to rectifying circuit arrangements including semi-conducting elements Expired GB938407A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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