Electronic ballast circuit for discharge lamp

Details Electronic ballast circuit for discharge lamp Electronic ballast circuit for discharge lamp

H - Electricity

05

B

315/54

H05B 41/36 (2006.01) H05B 41/232 (2006.01)

Patent

CA 2006280

ABSTRACT OF THE DISCLOSURE An electronic capacitive ballast circuit for operating a DC discharge lamp, such as a negative glow lamp. The circuit includes a rectifier bridge intercoupling a ballast capacitor and the electrodes of the discharge lamp. The rectifier bridge is separated into two halves allowing the discharge current to flow to opposite ends of the filament of the lamp during alternating half-cycles so that the filament (i.e., cathode) is operated in a double hot spot regime. As a result, lamp maintenance ana performance are improved.

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