(19)
(11) EP 0 650 312 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.03.1996 Bulletin 1996/12

(43) Date of publication A2:
26.04.1995 Bulletin 1995/17

(21) Application number: 94202932.3

(22) Date of filing: 11.10.1994
(51) International Patent Classification (IPC)6: H05B 41/16, H05B 41/232
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE

(30) Priority: 21.10.1993 CL 93414977

(71) Applicant: Velasco Valcke, Francisco Javier
Cali (CO)

(72) Inventor:
  • Velasco Valcke, Francisco Javier
    Cali (CO)

(74) Representative: SUGRANES - VERDONCES - FERREGÜELA 
Calle Provenza, 304
08008 Barcelona
08008 Barcelona (ES)


(56) References cited: : 
   
       


    (54) Fluorescent lamp energizing circuit


    (57) An improved energizing circuit for starting and regulating a gaseous discharge lamp. The circuit is 100% solid state and does not require the use of any inductive components or any fil aments for its proper operation. The circuit is made up of several subcircuits including a rectifying/voltage-doubling circuit, a second multiplying circuit, a low power oscillating circuit and a high voltage amplifier circuit. A high frequency AC signal is used to ionize the gas and ignite the lamp, while a DC signal is generated by the circuit to keep the lamp illuminated once it is ignited. The size and weight of the integrated circuit ballast are such that it could be incorporated into the fluorescent lamp package itself.






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