Dimmable ballast with active power feedback control

Details Dimmable ballast with active power feedback control Dimmable ballast with active power feedback control

1998-07-06

2000-04-18

Vu, David H.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315200R, 315207, 315307, H05B 3702

Patent

active

06051938&

ABSTRACT:
A circuit arrangement for high-frequency operation of a discharge lamp comprises a low-frequency rectifier for generating a DC voltage (buffer voltage) across a first capacitor (C1) from a low-frequency supply voltage. A DC/AC converter generates a high-frequency AC voltage from the buffer voltage. A load branch is coupled to the DC/AC converter and is provided with coupling terminals for coupling the discharge lamp to the load branch. A high-frequency rectifier (HR) converts the high-frequency voltage generated by the DC/AC converter into a DC voltage and comprises a series arrangement of first and second diodes (D5, D6) which have the same orientation. A control circuit (CR) controls the power consumed by the discharge lamp to a level which is dependent on a control signal (Sg). The high-frequency rectifier further comprises a switching device and a further control circuit (CR1). The switching device shunts at least one of the diodes of a feedback unit. The further control circuit controls the switching device dependent on the control signal.

REFERENCES:
patent: 5525872 (1996-06-01), Achten et al.

Affiliated with

Also associated with

Rating

Dimmable ballast with active power feedback control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dimmable ballast with active power feedback control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dimmable ballast with active power feedback control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2338555