EP0096105A2 - 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 PDF

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Publication number
EP0096105A2
EP0096105A2 EP82108774A EP82108774A EP0096105A2 EP 0096105 A2 EP0096105 A2 EP 0096105A2 EP 82108774 A EP82108774 A EP 82108774A EP 82108774 A EP82108774 A EP 82108774A EP 0096105 A2 EP0096105 A2 EP 0096105A2
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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Withdrawn
Application number
EP82108774A
Other languages
German (de)
French (fr)
Other versions
EP0096105A3 (en
Inventor
Fahir Gülüm
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
Publication of EP0096105A2 publication Critical patent/EP0096105A2/en
Publication of EP0096105A3 publication Critical patent/EP0096105A3/en
Withdrawn legal-status Critical Current

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    • 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

Definitions

  • the standart Ballasts and starters used for the fluorescent 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.

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  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

The standart Ballasts and starters used for the fluorescent 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.

Description

  • The standart Ballasts and starters used for the fluorescent 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.
    Thus the advantages are:
    • 1- Very small amount of iron and copper is used.
    • 2- High power factor.
    • 3- Instant start.
    • 4- No need of a starter and preheated cathodes.
    • 5- Longer life for the lamps even the use without a cathode.
    • 6- Simultaneous operation of any number of lamps connected in parallel.
    • 7- From 130 - 250 V voltage change no appreciable in light output.
    • 8- The saving in power use is 500% around 150 V and 200% around 220 V compared to the old system.

Claims (4)

1- The use of PTC (2) on the primary to permit very short windings (4).
2- Use of auto-transformer principle to obtain high voltages easily (4), (5).
3- This high voltage and the use of a small capacitor (3) permit the simultaneous parallel operation of several lamps (7).
4- A safe high voltage during operation for the independent control of lamps lighting due to the open primary (2).
EP82108774A 1981-10-01 1982-09-18 Instant start solid state ballast for fluorescent and gas-dis charge lamps Withdrawn EP0096105A3 (en)

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 true EP0096105A2 (en) 1983-12-21
EP0096105A3 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001467A1 (en) * 1986-08-15 1988-02-25 Mound Holdings Limited Fluorescent lamp operation

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001467A1 (en) * 1986-08-15 1988-02-25 Mound Holdings Limited Fluorescent lamp operation

Also Published As

Publication number Publication date
EP0096105A3 (en) 1984-07-18

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Effective date: 19850319