FR679687A - Dispositif pour l'alimentation de tubes à luminescence avec du courant ?rovenant desources existantes de courant continu ou alternatif
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Dispositif pour l'alimentation de tubes à luminescence avec du courant ?rovenant desources existantes de courant continu ou alternatif
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EANDER AAGE EWALD NORDFALK
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EANDER AAGE EWALD NORDFALK
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Application filed by EANDER AAGE EWALD NORDFALKfiledCriticalEANDER AAGE EWALD NORDFALK
Application grantedgrantedCritical
Publication of FR679687ApublicationCriticalpatent/FR679687A/fr
H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
H05B41/14—Circuit arrangements
H05B41/24—Circuit arrangements in which the lamp is fed by high frequency AC, or with separate oscillator frequency
FR679687D1928-08-021929-08-02Dispositif pour l'alimentation de tubes à luminescence avec du courant ?rovenant desources existantes de courant continu ou alternatif
ExpiredFR679687A
(fr)