Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...
Reexamination Certificate
2006-07-18
2006-07-18
Vo, Tuyet (Department: 2821)
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Periodic switch in the primary circuit of the supply...
C315S224000, C315S276000
Reexamination Certificate
active
07078867
ABSTRACT:
A DC-DC converter which accomplishes a reduction of the switching loss in the wide, variable range of the continuity ratio of the main switching device includes a direct current source, an ON-OFF-controllable main switching device, a main coil which is series connected to the main switching device, a fly-wheel diode which is arranged such that the induction current of the above described main coil flows when the main switching device is shifted into the OFF state, a smoothing capacitor for smoothing the output of the main coil, an auxiliary coil, a resonant capacitor and an ON-OFF-controllable auxiliary switching device, in which the auxiliary coil and the resonant capacitor are series-connected to form a LC series connection. Further, the LC series connection, the main switching device and the fly-wheel diode are also series connected, with the auxiliary switching device being connected in parallel to the LC series connection.
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Okamoto Masashi
Samejima Takanori
Suzuki Yoshikazu
Safran David S.
Ushiodenki Kabushiki Kaisha
Vo Tuyet
Vu Jimmy
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