| 摘要 |
A power factor correction device including electronic ballast function. The device adds a control circuit to produce the electronic ballast action to reduce harmonic interference, save power and room, and increase system reliability. The device includes a lamp for illumination; an ignitor, connected in series with the lamp to start the illumination; a voltage and current controller, connected in parallel with the series lamp and ignitor to receive the voltage across the lamp and output a feedback control signal according to the received voltage; and a power factor correction controller, connected in parallel with the voltage and current controller to adjust the output current to the lamp according to the feedback control signal so as to protect the entire circuit and increase the system reliability.
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