DC power supply with reduced ripple

Details DC power supply with reduced ripple DC power supply with reduced ripple

1996-03-13

1997-09-16

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

H02M 112

Patent

active

056687087

ABSTRACT:
A switching power supply for providing a dc voltage with substantially no ripple includes a rectifier for rectifying an ac supply, a filter for filtering the rectifier output and an inductor for current limiting. The filtered output includes a ripple generated by the equivalent series resistance of the filter. This ripple is sensed and used to generate a correcting signal. The correcting signal is arranged and sized so that when it is superimposed on the filtered output, the ripple is substantially eliminated. Preferably the correcting signal is coupled to the inductor.

REFERENCES:
patent: 3654489 (1972-04-01), Knapton
patent: 3656065 (1972-04-01), Reinhard et al.
patent: 3684968 (1972-08-01), Carroll
patent: 3729675 (1973-04-01), Vosteen
patent: 4032843 (1977-06-01), Loucks
patent: 4158819 (1979-06-01), Smither
patent: 4267422 (1981-05-01), Bell, Jr. et al.
patent: 4281299 (1981-07-01), Newbold
patent: 4350891 (1982-09-01), Wuerflein
patent: 4538287 (1985-08-01), Roberts et al.
patent: 4630218 (1986-12-01), Hurley
patent: 4693805 (1987-09-01), Quazi
patent: 4914312 (1990-04-01), Akama et al.
patent: 4946239 (1990-08-01), Garmon
patent: 5499392 (1996-03-01), Grunwell

Affiliated with

Also associated with

Rating

DC power supply with reduced ripple does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with DC power supply with reduced ripple, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC power supply with reduced ripple will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-222672