Patent classifications
H
ELECTRICITY
Load children
H05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Load children
H05B
ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
Load children
39/00
Circuit arrangements or apparatus for operating incandescent light sources
Load children Filter patents View analytics View as hierarchy
H05B39/08
by shifting phase of trigger voltage applied to gas-filled controlling tubes; also in controlled semiconductor devices
Load children Filter patents View analytics View as hierarchy