Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1997-02-28
1999-01-05
Wong, Don
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
315209R, 315276, 315307, 333187, 333192, H05B 3702
Patent
active
058567283
ABSTRACT:
A power transformer circuit (100) includes a capacitor (120) and a resonator (140). The resonator (140) is coupled in series with the capacitor (120) and is operable to provide a substantially inductive impedance between its terminals (142,144). Resonator (140) is preferably implemented as a piezoelectric lithium niobate resonator that is operated in a thickness-shear mode. In a preferred embodiment, power transformer circuit (100) is employed as a series resonant output circuit in an electronic ballast (500) for powering at least one gas discharge lamp (30).
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"Crystal Filters; Design, Manufacture, and Application," Robert G. Kinsman, Motorola, Inc.; Wiley-Interscience Publication 1986 pp. 64-67.
Mattson John
Zimnicki Charles L.
Cunningham Gary J.
Labudda Kenneth D.
Motorola Inc.
Philogene Haissa
Wong Don
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