EP0096105A3 - Instant start solid state ballast for fluorescent and gas-dis charge lamps - Google Patents
Instant start solid state ballast for fluorescent and gas-dis charge lamps Download PDFInfo
- Publication number
- EP0096105A3 EP0096105A3 EP82108774A EP82108774A EP0096105A3 EP 0096105 A3 EP0096105 A3 EP 0096105A3 EP 82108774 A EP82108774 A EP 82108774A EP 82108774 A EP82108774 A EP 82108774A EP 0096105 A3 EP0096105 A3 EP 0096105A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- arc
- rated
- ptc
- instead
- 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.)
- Withdrawn
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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The standart Ballasts and starters used for the fluores
cent lamps are based on the voltage kicks of a dying
magnetic field in iron core. This is a somewhat artificial way
of obtaining the voltage gradient necessary to establish an
arc in the long vacuum tube. To facilitate this arc a cathode
heating has been added for electron emission and arc
starting.
In the new design:
1- Instead of a weak voltage increase a dependable high voltage level is created by the sound autotransformer principle.
2- Instead of having the fully rated voltage primary coil, a much shorter one is subjected to the rated voltage for a few seconds and also protected from damage by a carefully chosen PTC (Positif Temperature Coefficient Thermistor) to separate the primary from the rated voltage circuit.
3- Therefore, with the aid of the PTC, from a 1 : 2 ratio autotransforme a voltage of 3 x V (rated) is obtained instantly.
4- This very short durated voltage is enough to strike an arc even for a very low (140 V) network and light a lamp without a starter.
5- This high voltage is harmless since it has the secondary coil in series as a ballast in the lamp circuit.
1- Instead of a weak voltage increase a dependable high voltage level is created by the sound autotransformer principle.
2- Instead of having the fully rated voltage primary coil, a much shorter one is subjected to the rated voltage for a few seconds and also protected from damage by a carefully chosen PTC (Positif Temperature Coefficient Thermistor) to separate the primary from the rated voltage circuit.
3- Therefore, with the aid of the PTC, from a 1 : 2 ratio autotransforme a voltage of 3 x V (rated) is obtained instantly.
4- This very short durated voltage is enough to strike an arc even for a very low (140 V) network and light a lamp without a starter.
5- This high voltage is harmless since it has the secondary coil in series as a ballast in the lamp circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR8977981 | 1981-10-01 | ||
| TR89779/81 | 1981-10-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0096105A2 EP0096105A2 (en) | 1983-12-21 |
| EP0096105A3 true EP0096105A3 (en) | 1984-07-18 |
Family
ID=21620603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82108774A Withdrawn EP0096105A3 (en) | 1981-10-01 | 1982-09-18 | Instant start solid state ballast for fluorescent and gas-dis charge lamps |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0096105A3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988001467A1 (en) * | 1986-08-15 | 1988-02-25 | Mound Holdings Limited | Fluorescent lamp operation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1600870A (en) * | 1968-08-13 | 1970-08-03 | ||
| FR2115886A5 (en) * | 1970-11-21 | 1972-07-07 | Philips Nv | |
| US3771068A (en) * | 1973-01-02 | 1973-11-06 | Gte Sylvania Inc | Constant wattage autotransformer ballast for high pressure sodium lamp |
-
1982
- 1982-09-18 EP EP82108774A patent/EP0096105A3/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1600870A (en) * | 1968-08-13 | 1970-08-03 | ||
| FR2115886A5 (en) * | 1970-11-21 | 1972-07-07 | Philips Nv | |
| US3771068A (en) * | 1973-01-02 | 1973-11-06 | Gte Sylvania Inc | Constant wattage autotransformer ballast for high pressure sodium lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0096105A2 (en) | 1983-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19850319 |