AC power feedback control device

Details AC power feedback control device AC power feedback control device

2011-05-03

2011-05-03

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

C315S299000

Reexamination Certificate

active

07936131

ABSTRACT:
An AC power feedback control device for a vacuum fluorescent display is provided. In the AC power feedback control device, the Class-D drivers are driven by the PWM controller so as to generate a sine wave voltage. After being filtered by the LPFs, the sine wave voltage is ready for filaments. The output voltage outputted by the filaments is detected by simple feedback elements so as to control and modulate the duty cycle of the PWM controller.

REFERENCES:
patent: 6531825 (2003-03-01), Iacob
patent: 7288903 (2007-10-01), Jang et al.
patent: 7446750 (2008-11-01), Moon

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