Method for varying the power consumption of capacitive loads

Details Method for varying the power consumption of capacitive loads Method for varying the power consumption of capacitive loads

2006-11-07

2006-11-07

Vu, David (Department: 2828)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

C315S307000, C363S098000

Reexamination Certificate

active

07132802

ABSTRACT:
Method for varying the power consumption of capacitive loads, in particular compact fluorescent lamps which are operated using a phase-gating dimmer by a converter (step-up converter). According to the invention, in the case of a nonconducting dimmer (i.e. no system power supply to the load), the switch (T1) in the converter (step-up converter) is closed. In the case of a conducting dimmer (i.e. when a system voltage is applied to the load), the step-up converter operation takes place until a predetermined maximum voltage is reached across the smoothing capacitor of the load.

REFERENCES:
patent: 5960207 (1999-09-01), Brown
patent: 6731078 (2004-05-01), Huber et al.

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