Patent Number: 6,295,212

Title: Switching power supply with storage capacitance and power regulation

Abstract: A power supply system includes an a-c. power source and an off-line power supply for storing energy from the a-c. power source during first selected time intervals and converting at least a portion of the stored energy to a d-c. output during second selected time intervals. A diode or other switch disconnects the off-line power supply from the a-c. power source during the second selected time intervals to reduce conducted EMI. The first and second selected time intervals are preferably synchronized to the frequency of the a-c. power source.

Inventors: Kayser; Kenneth W. (Roanoke, VA), Zsamboky; Kalman (Roanoke, VA), Shaufl; Robert A. (Pickerington, OH)

Assignee: Bias Power Technology, Inc.

International Classification: H02M 1/12 (20060101); H02M 3/24 (20060101); H02M 3/335 (20060101); H02M 3/338 (20060101); H02M 003/335 ()

Expiration Date: 09/25/2018