EP0025404B1 - Elément de court-circuit d'alimentation série - Google Patents

Elément de court-circuit d'alimentation série Download PDF

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Publication number
EP0025404B1
EP0025404B1 EP80420103A EP80420103A EP0025404B1 EP 0025404 B1 EP0025404 B1 EP 0025404B1 EP 80420103 A EP80420103 A EP 80420103A EP 80420103 A EP80420103 A EP 80420103A EP 0025404 B1 EP0025404 B1 EP 0025404B1
Authority
EP
European Patent Office
Prior art keywords
circuit
terminals
short
control electrode
conductor
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
EP80420103A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0025404A3 (en
EP0025404A2 (fr
Inventor
Raymond Lautesse
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT80420103T priority Critical patent/ATE5626T1/de
Publication of EP0025404A2 publication Critical patent/EP0025404A2/fr
Publication of EP0025404A3 publication Critical patent/EP0025404A3/fr
Application granted granted Critical
Publication of EP0025404B1 publication Critical patent/EP0025404B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/10—Circuits providing for substitution of the light source in case of its failure
    • H05B39/105—Circuits providing for substitution of the light source in case of its failure with a spare lamp in the circuit, and a possibility of shunting a failed lamp

Definitions

  • the present invention relates to a short circuit element for a series supply circuit.
  • the subject of the present invention is a short-circuit element of the type having two terminals intended to be connected to the terminals of a device forming part of a set of conductive devices connected in series between two current supply terminals. electric, the short-circuit element being normally open and becoming conductive when the device to which it is connected in parallel ceases to ensure the conduction of electricity between its terminals.
  • the short-circuit element associated therewith is formed and supplies the other devices in this assembly.
  • a particular, but not limiting, field of application of the short-circuit element which is the subject of the invention is that of lighting or signaling circuits comprising several lamps connected in series, for example the beacon light circuits aerodrome runway.
  • the short-circuit elements currently used are relays with mechanical latching.
  • the relay associated with the lamp closes and short-circuits by a mechanically locked contact between the lamp and the excitation coil of the relay.
  • a short-circuit element for lighting installation as defined in the preamble of claim 1 is known from French patent 7421 218 published under the number 2275962.
  • Such an element is specific to high pressure discharge lamps known to have in their supply circuit a balancing inductor.
  • Such an element includes a static switch connected between two terminals, one of which is located upstream of the choke. This switch is triggered by control pulses from the secondary of a transformer whose primary is connected between the downstream of the choke and the second terminal.
  • Such an element which thus comprises three connection terminals, is completed by an incandescent lamp interposed between the upstream terminal and the static switch.
  • the choke is placed in series with the main lamp and that the triggering of the static switch is ensured by a transformer connected between the choke and the lamp. In the event of destruction of the choke, the bypass function can no longer be assumed since the transformer is no longer supplied.
  • the object of the present invention is to provide a solution to the problem thus posed by proposing a new short-circuit element capable of operating correctly even under difficult operating conditions and offering the advantage of being insensitive to mechanical shock. and not to experience premature aging.
  • the predetermined threshold being chosen at a value for example the greater than the nominal voltage across the terminals of the device to be monitored, any rise in voltage beyond this threshold will cause the short-circuit element to conduct.
  • the static switch is formed by at least one semiconductor component, for example triac or thyristor.
  • the trip control circuit comprises at least one Zener diode connected to a terminal of the element.
  • the trip control circuit can be connected either between a terminal of the element and the control electrode, or between the terminals of the element, an additional output then being connected to the control electrode.
  • a pulse transformer can be provided with a primary winding connected in series between the terminals of the element and a secondary winding connected to the control electrode.
  • the series of beacon light supply circuit represented by FIG. 1 comprises a current regulator 1 which supplies the primary windings connected in series of transformers 2.
  • the secondary of each transformer supplies alternating current between its terminals 4 and 5 , a circuit 3 comprising several lamps 6 connected in series.
  • a short-circuit element 10 is connected in bypass to each lamp.
  • a single circuit 3 and a single element 10 are shown in detail in FIG. 1.
  • the short-circuit element 10 comprises a static switch which closes in response to an abnormal rise in the voltage across its terminals.
  • the element 10 has two terminals 8 1 and B ', connected to the terminals of the lamp 6 to which this element 10 is connected in parallel.
  • Element 10 includes a triac TR 1 connected between terminals 8 1 and B ' 1 .
  • the control electrode G1 of the triac TR1 is connected to a trip control circuit comprising, between the terminal B1 and the electrode G1, a resistor R1 and a set of diodes.
  • the diode assembly comprises a first series circuit formed by a diode D1 and a Zener diode Z1 with their cathodes in common and a second series circuit formed by a diode D '1 and a Zener diode Z' 1 with their anodes in common.
  • a resistor V1 with variable value depending on the voltage is connected between the terminals B1 and B'1 in parallel on the triac TR 1.
  • the operation of the short circuit element 10 is as follows.
  • the Zener diodes Z1 and Z'1 are chosen so that the voltage on the trigger G 1, for each half-wave, remains below the triac trigger threshold TR 1 when the lamp 6, at the terminals of which the circuit 10 is connected, works normally. The triac TR 1 is then blocked.
  • the element 10 If, for any reason, the voltage across the element 10 increases abnormally without this resulting from a cut in the filament of the lamp, the element 10 operates as described above and therefore provides protection for the lamp against overvoltages.
  • Component V1 is preferably a metal oxide varistor having a Z-shaped current-voltage characteristic, the resistance decreasing suddenly when the voltage across the varistor crosses, in absolute value, a given threshold. This component V1 therefore provides protection of the element 10 against overvoltages.
  • the element 20 of FIG. 2 comprises, in place of the triac TR 1, two thyristors TH2 and TH'2 mounted in parallel and head to tail between the terminals B2 and B'2 of the element 20.
  • the thyristor TH2 is associated with a trigger control circuit comprising a resistor R2, a diode D2 and a Zener diode Z2 connected in series between the terminal B2 and the control electrode G2 of the thyristor TH2, the diodes D2 and Z2 having their cathodes in common.
  • the thyristor TH'2 is associated with a trip control circuit comprising a resistor R'2, a diode D'2 and a Zener diode Z'2 connected in series between terminal B'2 and l ' control electrode G'2 of thyristor TH'2, the diodes D'2 and Z'2 having their cathodes in common.
  • a varistor V2 is connected between terminals B2 and B'2 in parallel on thyristors TH2 and TH'2.
  • the element 20 is therefore perfectly equivalent to the element 10 in FIG. 1 and its operation is similar to that of the latter.
  • the thyristors TH2 and TH'2 are made conductive alternately during successive positive and negative half-cycles.
  • the short-circuit element 30 comprises, between its terminals B3 and B ', a triac TR 3 connected in parallel to a varistor V3.
  • the trip control circuit comprises, between terminals B3 and B'3, a series circuit formed by a resistor R3, the primary of a pulse transformer T3 and a set of diodes D3, Z3, D ' 3, Z'3 similar to the set of diodes D1, Z1, D'1, Z'1 of element 10 in FIG. 1.
  • the secondary of transformer T3 is connected in series with a resistor S3 between terminal B '3 and the G3 control electrode of the triac TR 3.
  • the short-circuit element 30 operates similarly to the element 10 in FIG. 1.
  • the transformer T3 applies pulses to the electrode G3 making the triac TR 3 conductive.
  • the short-circuit element 40 comprises two thyristors TH4 and TH'4 mounted head to tail in parallel between the terminals B4 and B'4 of the element 40, a varistor V4 being also mounted between terminals B4 and B'4, in parallel on each thyristor.
  • the thyristor tripping control circuit comprises, for the two thyristors, a series circuit connected between the terminals B4 and B'4 and formed of a resistor R4, of a primary of a pulse transformer T4 and of a set of diodes D4, Z4, D'4, Z'4 similar to the set of diodes D1, Z1, D '1, Z' of element 10 of FIG. 1.
  • the transformer T4 has a first secondary winding connected in series with a resistor S4 between terminal B4 and the control electrode G4 of the thysistor TH4, and a second secondary winding connected in series with a resistor S'4 between the terminal and the control electrode G'4 of the thyristor TH'4.
  • the transformer T4 applies to the electrodes G4, G'4 pulses which make the thyristors TH 4 and TH '4 alternately conductive during successive half-cycles.
  • each short-circuit element is mounted on a printed circuit board 50 (FIGS. 5, 6) and are embedded in a sealing coating 51 obtained, for example, by molding a resin.
  • the plate 50 serves as a mounting support for the short-circuit element inside the metal box constituting the envelope of the beacon light with which the element is associated, and the plate 50 transmits to this metal envelope the heat energy dissipated by the triac or the thyristors when they are driving.
  • the plate 50 comprises a metallized zone 52 on which is fixed the housing 53 of the triac or of each thyristor and in which are formed holes 54 for fixing the plate on the housing of the beacon light.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electronic Switches (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Air Bags (AREA)
EP80420103A 1979-09-11 1980-09-04 Elément de court-circuit d'alimentation série Expired EP0025404B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80420103T ATE5626T1 (de) 1979-09-11 1980-09-04 Kurzschlusselement fuer serienschaltung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7923262 1979-09-11
FR7923262A FR2465394A1 (fr) 1979-09-11 1979-09-11 Element de court-circuit pour un circuit d'alimentation serie

Publications (3)

Publication Number Publication Date
EP0025404A2 EP0025404A2 (fr) 1981-03-18
EP0025404A3 EP0025404A3 (en) 1981-03-25
EP0025404B1 true EP0025404B1 (fr) 1983-12-14

Family

ID=9229760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80420103A Expired EP0025404B1 (fr) 1979-09-11 1980-09-04 Elément de court-circuit d'alimentation série

Country Status (5)

Country Link
EP (1) EP0025404B1 (es)
JP (1) JPS5646630A (es)
AT (1) ATE5626T1 (es)
DE (1) DE3065892D1 (es)
FR (1) FR2465394A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10329082A1 (de) * 2003-03-31 2004-10-21 Osram Opto Semiconductors Gmbh Elektrisches Bauelement, insbesondere Laserdiodenbauelement, elektronische Schaltungsanordnung mit einer Mehrzahl von seriell zueinander verschalteten elektrischen Serienelementen und Überbrückungselement für ein elektrisches Serienelement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658974B1 (fr) * 1990-02-26 1996-09-06 Estival Christian Dispositif d'alimentation de lampes a incandescence branchees en serie a haut degre de fiabilite.
FR2663183B1 (fr) * 1990-06-07 1997-04-11 Fd Eclairage Architectural Circuit d'alimentation de lampes basse tension disposees en serie.
FR2771587B1 (fr) * 1997-11-21 2000-01-21 Francis David Relais-shunt pour lampe electrique basse tension, montee en serie

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR422443A (fr) * 1909-11-03 1911-03-21 Edgar Booth Perfectionnements dans les installations électriques de lampes à incandescence montées en série
US2021062A (en) * 1932-12-09 1935-11-12 Gen Electric Indicator for incandescent lamps
FR1541224A (fr) * 1967-10-02 1968-10-04 Bassani Spa Dispositif pour l'allumage automatique de lampes en cas d'extinction des lampes normales d'une installation d'éclairage
FR2275962A1 (fr) * 1974-06-19 1976-01-16 Central Eclairage Lab Dispositif de secours pour installation d'eclairage electrique
US4099095A (en) * 1976-02-25 1978-07-04 General Electric Company Operating circuit for gaseous discharge and incandescent lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10329082A1 (de) * 2003-03-31 2004-10-21 Osram Opto Semiconductors Gmbh Elektrisches Bauelement, insbesondere Laserdiodenbauelement, elektronische Schaltungsanordnung mit einer Mehrzahl von seriell zueinander verschalteten elektrischen Serienelementen und Überbrückungselement für ein elektrisches Serienelement

Also Published As

Publication number Publication date
EP0025404A3 (en) 1981-03-25
ATE5626T1 (de) 1983-12-15
JPS5646630A (en) 1981-04-27
DE3065892D1 (en) 1984-01-19
EP0025404A2 (fr) 1981-03-18
FR2465394A1 (fr) 1981-03-20
FR2465394B1 (es) 1983-11-18

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