Reduction of harmonics in gas discharge lamp ballasts

Details Reduction of harmonics in gas discharge lamp ballasts Reduction of harmonics in gas discharge lamp ballasts

H - Electricity

05

B

315/53

H05B 41/16 (2006.01) H02M 7/523 (2006.01) H05B 41/24 (2006.01) H05B 41/28 (2006.01) H02M 7/538 (2006.01)

Patent

CA 1207830

A B S T R A C T A gas discharge lamp ballast circuit operates at high frequency and is fed from a mains supply through a rectifier having a smoothing capacitor. The invention provides for the load to include an inductor and to return to the rectifier supply at a position isolated from the smoothing capacitor by one or more diodes, and for there to be a discharge path from the smoothing capacitor through the load to charge a control capacitor, and lower the load voltage to allow a rectifier current flow to the load. The smoothing capacitor is charged by current flowing from the inductor during a relaxation phase, to a voltage higher than the peaks of the rectifier. The smoothing capacitor voltage is maintained by proportioning the control capacitor size to cause rectifier current, and not smoothing capacitor discharge, to supply circuit and load losses.

429348

Affiliated with

Also associated with

Rating

Reduction of harmonics in gas discharge lamp ballasts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reduction of harmonics in gas discharge lamp ballasts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduction of harmonics in gas discharge lamp ballasts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1248829