ATE25316T1 - ELECTRONIC FLUORESCENT LAMP STARTER, WITH A TIME DELAY CIRCUIT COOPERATING WITH AN OVERVOLTAGE CIRCUIT AND A PREHEATING CIRCUIT. - Google Patents
ELECTRONIC FLUORESCENT LAMP STARTER, WITH A TIME DELAY CIRCUIT COOPERATING WITH AN OVERVOLTAGE CIRCUIT AND A PREHEATING CIRCUIT.Info
- Publication number
- ATE25316T1 ATE25316T1 AT82400510T AT82400510T ATE25316T1 AT E25316 T1 ATE25316 T1 AT E25316T1 AT 82400510 T AT82400510 T AT 82400510T AT 82400510 T AT82400510 T AT 82400510T AT E25316 T1 ATE25316 T1 AT E25316T1
- Authority
- AT
- Austria
- Prior art keywords
- circuit
- switching element
- overvoltage
- series
- preheating
- Prior art date
Links
- 239000007858 starting material Substances 0.000 title abstract 2
- 239000003990 capacitor Substances 0.000 abstract 3
- 230000001939 inductive effect Effects 0.000 abstract 3
- 230000001934 delay Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
- H05B41/042—Starting switches using semiconductor devices
- H05B41/044—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes
- H05B41/046—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes using controlled semiconductor devices
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
1. An electronic starter for a fluorescent lamp powered by an a.c. source and consisting of : a. a preheating circuit comprising a series arrangement of at least : (1) the lamp filament ; (2) a switching element activated by means of a gate electrode ; b. a time-delay circuit comprising a series arrangement of at least : (3) a set of resistors constituting a bridge, for the control of the said gate electrode ; c. an overvoltage circuit comprising a series arrangement of at least : (4) an overvoltage capacitor, (5) an inductive element ; characterized in that : d. the switching element is unidirectional and in that the preheating circuit also comprises a series arrangement of : (6) a diode whose conductivity direction is the same as that of the switching element and which is intended to limit the operation of the preheating circuit to the positive half cycles of the supply voltage which correspond to the conduction of said diode, by means of the voltage charge of at least one capacitance in series with a resistor connected to the gate of the switching element ; e. the time-delay circuit also comprises a time-delay capacitor arranged in series with the supply source during the negative half cycles and in parallel with at least a fraction of the resistor bridge for applying a voltage to the gate, which voltage is increasingly negative during the periods when the switching element is non-conducting and thus progressively delays the closure of the switching element during each positive half cycle ; f. the overvoltage circuit is arranged in parallel with the switching element in order that as from the start of the positive half cycles the overvoltage capacitor is charged during the periods having an increasing delay time at the closure of the switching element, after which, at the closure of this element it is discharged across the switching element in the inductive element, which inductive element is the primary winding of an auto-transformer arranged in series in the pre-heating circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8106772A FR2503521A1 (en) | 1981-04-03 | 1981-04-03 | ELECTRONIC STARTER FOR FLUORESCENT TUBE, COMPRISING A TIMER CIRCUIT COOPERATING WITH AN OVERVOLTAGE CIRCUIT AND A PREHEATING CIRCUIT |
| EP82400510A EP0063507B1 (en) | 1981-04-03 | 1982-03-19 | Electronic starter for fluorescent lamps comprising a time delay circuit cooperating with an overvoltage circuit and a preheating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE25316T1 true ATE25316T1 (en) | 1987-02-15 |
Family
ID=9257004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT82400510T ATE25316T1 (en) | 1981-04-03 | 1982-03-19 | ELECTRONIC FLUORESCENT LAMP STARTER, WITH A TIME DELAY CIRCUIT COOPERATING WITH AN OVERVOLTAGE CIRCUIT AND A PREHEATING CIRCUIT. |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0063507B1 (en) |
| AT (1) | ATE25316T1 (en) |
| DE (1) | DE3275345D1 (en) |
| ES (1) | ES511049A0 (en) |
| FR (1) | FR2503521A1 (en) |
| MA (1) | MA19430A1 (en) |
| PT (1) | PT74682B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU83920A1 (en) * | 1982-02-03 | 1983-09-02 | Jean Marie De Pra | STARTING DEVICE FOR DISCHARGE LAMPS |
| CN1311715C (en) * | 2002-06-18 | 2007-04-18 | 陈树煌 | Electronic ballast with protector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1411575A (en) * | 1972-12-20 | 1975-10-29 | Lampes Sa | Two-terminal electronic starters for fluorescent lamps |
-
1981
- 1981-04-03 FR FR8106772A patent/FR2503521A1/en active Granted
-
1982
- 1982-03-19 EP EP82400510A patent/EP0063507B1/en not_active Expired
- 1982-03-19 DE DE8282400510T patent/DE3275345D1/en not_active Expired
- 1982-03-19 AT AT82400510T patent/ATE25316T1/en not_active IP Right Cessation
- 1982-03-31 PT PT74682A patent/PT74682B/en unknown
- 1982-04-01 ES ES511049A patent/ES511049A0/en active Granted
- 1982-04-01 MA MA19634A patent/MA19430A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2503521B1 (en) | 1984-05-04 |
| PT74682A (en) | 1982-04-01 |
| EP0063507A1 (en) | 1982-10-27 |
| FR2503521A1 (en) | 1982-10-08 |
| DE3275345D1 (en) | 1987-03-05 |
| ES8303875A1 (en) | 1983-02-01 |
| PT74682B (en) | 1983-08-22 |
| ES511049A0 (en) | 1983-02-01 |
| MA19430A1 (en) | 1982-12-31 |
| EP0063507B1 (en) | 1987-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| UEP | Publication of translation of european patent specification | ||
| REN | Ceased due to non-payment of the annual fee |