Electronic device for the starting and a.c. voltage operation of

Details Electronic device for the starting and a.c. voltage operation of Electronic device for the starting and a.c. voltage operation of

1980-11-17

1983-04-19

La Roche, Eugene R.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Discharge device and/or rectifier in the cathode or heater...

315207, 315208, 315244, 315290, H05B 4116

Patent

active

043807194

ABSTRACT:
An electronic device (20-61) for the starting and a.c. operation of a capacitively stabilized discharge lamp (7) includes a controlled semiconductor switching element (22) which, in the operating condition of the lamp, is briefly conductive in each half cycle of the AC supply. The control circuit of the semiconductor switching element (22) includes a second switching element (25) which, during the starting procedure of the lamp, ensures that the semiconductor switching element (22) is made conductive only every alternate half cycle thereby to improve the ignition of the lamp.

REFERENCES:
patent: 3924155 (1975-12-01), Vogeli
patent: 4066932 (1978-01-01), Rottier
patent: 4253043 (1981-02-01), Chermin et al.

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