Operating circuit for a gas and/or vapour discharge lamp

Details Operating circuit for a gas and/or vapour discharge lamp Operating circuit for a gas and/or vapour discharge lamp

1975-11-04

1977-05-10

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315105, 315205, 315246, 315DIG4, 315DIG7, H05B 4123, H05B 4138

Patent

active

040230660

ABSTRACT:
An improved method of and apparatus for operating an electric discharge lamp which includes a controlled semiconductor switch connected in shunt with the lamp. By means of the semiconductor switch, the discharge lamp receives, when in operation, a plurality of voltage peaks, during every second half cycle of the AC supply voltage.

REFERENCES:
patent: 3659150 (1972-04-01), Laupman
patent: 3699385 (1972-10-01), Paget
patent: 3875459 (1975-04-01), Remery et al.
patent: 3924155 (1975-12-01), Vogeli

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