by shifting phase of trigger voltage applied to gas-filled controlling tubes

Full Title

Circuit arrangements or apparatus for operating incandescent light sources > Controlling > by shifting phase of trigger voltage applied to gas-filled controlling tubes

Classification Context

Section:

ELECTRICITY

Class:

ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Subclass:

ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL