Power source device

Details Power source device Power source device

1994-06-09

1995-01-24

Pascal, Robert J.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch cut-out

315209R, 315119, 315241R, 315106, 315107, 315DIG7, H05B 3702

Patent

active

053845188

ABSTRACT:
A power source device includes a voltage converting means to input side of which a DC voltage source is connected and to output side of which a capacitance element and a load circuit are connected, while a control circuit is connected to the voltage converting means and the load circuit, the latter circuit having a load impedance made lower upon starting of a load in the load circuit than that in stable lighting of the load, wherein such control constant as oscillation frequency and duty are made to be substantially constant at the time of the starting and stable lighting of the load, and a switching means in the voltage converting means is turned OFF when the capacitance element has a voltage below a predetermined value.

REFERENCES:
patent: 4247803 (1981-01-01), Walz
patent: 4616158 (1986-10-01), Krummel et al.
patent: 5138235 (1992-08-01), Sun et al.
patent: 5175471 (1992-12-01), Stockinger et al.
patent: 5291099 (1994-03-01), Gill et al.

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