ES348718A1 - Circuit Arrangements for Current Consuming Apparratus - Google Patents

Circuit Arrangements for Current Consuming Apparratus

Info

Publication number
ES348718A1
ES348718A1 ES348718A ES348718A ES348718A1 ES 348718 A1 ES348718 A1 ES 348718A1 ES 348718 A ES348718 A ES 348718A ES 348718 A ES348718 A ES 348718A ES 348718 A1 ES348718 A1 ES 348718A1
Authority
ES
Spain
Prior art keywords
current flow
resistor
capacitors
thyristors
lamp
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
ES348718A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES348718A1 publication Critical patent/ES348718A1/en
Expired legal-status Critical Current

Links

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
    • H05B39/04—Controlling
    • H05B39/08—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices
    • H05B39/083—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices by the variation-rate of light intensity
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/725—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents

Abstract

A system for supplying from an A.C. source a load having a positive temperature coefficient of resistance is so arranged that the current flow in the load at starting is reduced. A load 3 such as an incandescent lamp is supplied from an A.C. source 1, 2 by way of a pair of reverse parallel connected thyristors 6, 11, the control signals for which are derived from a circuit comprising capacitors 7, 10 and resistors 8, 9, the resistor 8 having a negative temperature coefficient of resistance. When switching on the resistor 8 is cold and has a high resistance. The capacitors 7, 10 will-in consequencetake a relatively long time to charge to a value sufficient to break down the DIACS 14, 17 and supply the thyristors 6, 11 with trigger signals. The current flow in the lamp 3 will therefore be small. As the resistor 8 warms up and its resistance falls, the capacitors 7, 10 will charge more quickly. Thus the thyristors 6, 11 will fire earlier in the respective half cycles of the A.C. supply and the current flow in the lamp 3 will increase until the normal current flow is reached. If desired the resistor 9 may be a variable resistor by means of which the current flow through the lamp 3-and hence its brilliancy-may be controlled. In another embodiment the thyristors 6, 11 may be replaced by a TRIAC in which case the control circuit will comprise only one of the capacitors 7, 10.
ES348718A 1966-12-30 1967-12-28 Circuit Arrangements for Current Consuming Apparratus Expired ES348718A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6618393A NL6618393A (en) 1966-12-30 1966-12-30

Publications (1)

Publication Number Publication Date
ES348718A1 true ES348718A1 (en) 1969-03-16

Family

ID=19798594

Family Applications (1)

Application Number Title Priority Date Filing Date
ES348718A Expired ES348718A1 (en) 1966-12-30 1967-12-28 Circuit Arrangements for Current Consuming Apparratus

Country Status (9)

Country Link
AT (1) AT274142B (en)
BE (1) BE708645A (en)
CH (1) CH476339A (en)
DE (1) DE1638502A1 (en)
ES (1) ES348718A1 (en)
FR (1) FR1549865A (en)
GB (1) GB1158020A (en)
NL (1) NL6618393A (en)
SE (1) SE323747B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917778A1 (en) * 1979-05-03 1980-11-06 Maar Markttechnik Kg Spot lamp overheating control circuit - includes resistive heat sensitive element and control resistance operating thyristor in power supply
DE3118885A1 (en) * 1981-05-13 1982-12-02 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electrical tool having an arrangement for full-wave control
JPS59215696A (en) * 1983-05-21 1984-12-05 林原　健 Power source for high intensity bulb
JPS59230298A (en) * 1983-06-14 1984-12-24 林原　健 Rush current excluding device

Also Published As

Publication number Publication date
DE1638502A1 (en) 1971-06-09
NL6618393A (en) 1968-07-01
AT274142B (en) 1969-09-10
GB1158020A (en) 1969-07-09
CH476339A (en) 1969-07-31
SE323747B (en) 1970-05-11
BE708645A (en) 1968-06-28
FR1549865A (en) 1968-12-13

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