FR2523798A1 - LV lamp from mains using capacitive current limiting - uses series connected capacitor to limit lamp current when connected to AC mains supply - Google Patents

LV lamp from mains using capacitive current limiting - uses series connected capacitor to limit lamp current when connected to AC mains supply Download PDF

Info

Publication number
FR2523798A1
FR2523798A1 FR8204859A FR8204859A FR2523798A1 FR 2523798 A1 FR2523798 A1 FR 2523798A1 FR 8204859 A FR8204859 A FR 8204859A FR 8204859 A FR8204859 A FR 8204859A FR 2523798 A1 FR2523798 A1 FR 2523798A1
Authority
FR
France
Prior art keywords
lamp
capacitor
mains
current
limit
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.)
Granted
Application number
FR8204859A
Other languages
French (fr)
Other versions
FR2523798B1 (en
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 FR8204859A priority Critical patent/FR2523798B1/en
Publication of FR2523798A1 publication Critical patent/FR2523798A1/en
Application granted granted Critical
Publication of FR2523798B1 publication Critical patent/FR2523798B1/en
Expired legal-status Critical Current

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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/06—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances
    • H02M5/08—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances using capacitors only
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source

Abstract

The use of a series connected circuit, comprising a resistor and capacitor connected in parallel, permits the useage of low voltage (6-24V) halogen lamps from the ac mains supply, with the capacitor value being chosen to limit the current in the lamp to its nominal value. No transformer is needed, reducing the cost of the unit. The capacitor limits the rate of rise of current in the lamp, reducing the surge current at switch on and thus reducing thermal and mechanical shock on the lamp filament. The resistor connected across the capacitor serves the additional purpose of discharging the capacitor when the supply switch is opened.

Description

La présente invention cuncerne notamment le fonctionnement de n'importe de n'importe quelles lampes à incandescence et halogène et ceci en basse tension.The present invention notably relates to the operation of any of any incandescent and halogen lamps and this at low voltage.

Ces sources lumineuses dont la tension est souvent 6, 12 ou 4 volts , > euvent être alimentées à partir de la tension du secteur le plus souvent 220 volts, à partir d'un ou plusieurs condensateurs, selon leur valeur de capacité, et cela en série avec la source lumineuse, ce qui permet à la lampe d'être alimentée à sa tension nominale de fonctionnement, et cela en fonction de la valeur du condensateur en Mierofarad par rapport à fà la puissance en watts de la lampe et de sa tension en volts.These light sources whose voltage is often 6, 12 or 4 volts,> can be supplied from the mains voltage most often 220 volts, from one or more capacitors, according to their capacity value, and this in series with the light source, which allows the lamp to be supplied at its nominal operating voltage, and this according to the value of the capacitor in Mierofarad compared to f to the wattage of the lamp and its voltage in volts.

De plus la lampe se trouve préservée du choc brutal n'est l'allumage, car la charge du conddnsateur provoque une montée en tension progressive dans la lampe, mais en quelques millisecondes, ce qui productfon pas perceptible i l'oeil.In addition the lamp is preserved from the brutal shock is the ignition, because the charge of the capacitor causes a progressive rise in tension in the lamp, but in a few milliseconds, which produces not perceptible to the eye.

La résistance permet la décharge du condensateur lors de l'extinction de la lampe.The resistance allows the capacitor to discharge when the lamp goes out.

Les avantages du principe sont les suivants
Prix de revient plus faible que l'alimentation par transformateur.The advantages of the principle are as follows:
Lower cost price than transformer supply.

las de ronflement, pas de dégagement de chaleur, protection du cnoc thermique sur le filament des lampes, pas de charge de parasites.weary of snoring, no heat generation, thermal protection on the filament of the lamps, no load of parasites.

La figure unique annexée est un schéma de principe de fonctionnement. La tension du secteur est branchée en 1, en principe 210 volts alternatif lorsque l'on ferme l'interrupteur 5 et le condensateur 7 se décharge et décharge A travers la lampe basse tension 2 fournissant ainsi la tension nécessaire à son alimentation, la résistance 4 sert à la décharge du condensateur lorsque
l'interrupteur 5 est ouvert. The single appended figure is a diagram of the operating principle. The mains voltage is connected at 1, in principle 210 volts AC when the switch 5 is closed and the capacitor 7 discharges and discharges through the low voltage lamp 2 thus supplying the voltage necessary for its supply, the resistor 4 used to discharge the capacitor when
switch 5 is open.

Claims (1)

RevendioationRevendioation Alimentation de lampe basse tension caractérisée en ce qu'elle comporte un condensateur (3) en sérle avec la lampe (,) et une résistance de décharge (4) du cendensateur (3), permettant la charge et la décharge du condensateur (3) A partir de la tension (I) du sectaut dans la lampe (2) pour obtenir le fonctionnement de celle-ci. Low-voltage lamp power supply, characterized in that it comprises a capacitor (3) in serle with the lamp (,) and a discharge resistance (4) of the cendensor (3), allowing the charging and discharging of the capacitor (3) From the voltage (I) of the sectaut in the lamp (2) to obtain the functioning thereof.
FR8204859A 1982-03-22 1982-03-22 FEEDING LOW VOLTAGE LAMPS FROM A CAPACITIVE DEVICE Expired FR2523798B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8204859A FR2523798B1 (en) 1982-03-22 1982-03-22 FEEDING LOW VOLTAGE LAMPS FROM A CAPACITIVE DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8204859A FR2523798B1 (en) 1982-03-22 1982-03-22 FEEDING LOW VOLTAGE LAMPS FROM A CAPACITIVE DEVICE

Publications (2)

Publication Number Publication Date
FR2523798A1 true FR2523798A1 (en) 1983-09-23
FR2523798B1 FR2523798B1 (en) 1985-06-21

Family

ID=9272256

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8204859A Expired FR2523798B1 (en) 1982-03-22 1982-03-22 FEEDING LOW VOLTAGE LAMPS FROM A CAPACITIVE DEVICE

Country Status (1)

Country Link
FR (1) FR2523798B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2594270A1 (en) * 1986-02-10 1987-08-14 David Francis Protection of series supply circuits for lamps

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274484A (en) * 1964-05-05 1966-09-20 Lory Power control network
FR1474402A (en) * 1966-04-01 1967-03-24 Method allowing the production of miniature network transformers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274484A (en) * 1964-05-05 1966-09-20 Lory Power control network
FR1474402A (en) * 1966-04-01 1967-03-24 Method allowing the production of miniature network transformers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELEKTRO TECHNIK, volume 39, no. 5, 2 février 1957, WURZBURG (DE); W.M\RS: "Kleinst-Gleichrichter in Taschenlampen", pages 35-37 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2594270A1 (en) * 1986-02-10 1987-08-14 David Francis Protection of series supply circuits for lamps

Also Published As

Publication number Publication date
FR2523798B1 (en) 1985-06-21

Similar Documents

Publication Publication Date Title
US3517254A (en) Continuous lighting system for gaseous-discharge lamps with incandescent lights for standby
EP0633710B1 (en) Power supply for an arc discharge lamp
JPH0773989A (en) Two level illumination control system
AU736426B2 (en) Multi-voltage ballast and dimming circuits for a lamp driven voltage transformation and ballasting system
US4406976A (en) Discharge lamp ballast circuit
US5070279A (en) Lamp ignitor with automatic shut-off feature
US4091307A (en) Emergency lighting system for gaseous-discharge lamps
NL8003456A (en) LIGHT SOURCE.
FR2523798A1 (en) LV lamp from mains using capacitive current limiting - uses series connected capacitor to limit lamp current when connected to AC mains supply
US4047076A (en) Emergency lighting system for gaseous discharge lamps
CA1248169A (en) Fluorescent light unit with dual light levels
US5444334A (en) System for starting a high intensity discharge lamp
HU194670B (en) Adapter circuit for operating high-pressure discharge lamp
EP0450024A1 (en) Preheater circuit for fluorescent lamps
JPS5893197A (en) Method and device for starting fluorescent lamp
US3749968A (en) Incandescent-high intensity discharge lamp lighting system
RU1817266C (en) Device for striking short-arc high-pressure metal-halogen discharge lamp
JP2527948B2 (en) Metal vapor discharge lamp
CN2728162Y (en) Fluorescent tube protector
SU465677A1 (en) Apparatus for extending the life of fluorescent lamps
JPS6237359Y2 (en)
FR2579057A1 (en) Starting device for low-pressure gas discharge lamp
CH118738A (en) Lighting device with instantaneous light emission.
BE678187A (en)
GB2023951A (en) Fluorescent lamp starting circuits

Legal Events

Date Code Title Description
CL Concession to grant licences
TP Transmission of property
CL Concession to grant licences
ST Notification of lapse
RN Application for restoration
RN Application for restoration
FC Decision of inpi director general to approve request for restoration
ST Notification of lapse