Capacitive coupled power supplies

• US 4,841,429 A
• Filed: 03/24/1988
• Issued: 06/20/1989
• Est. Priority Date: 03/24/1988
• Status: Expired due to Term

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Hughes Aircraft Company (Rtx Corporation)
• Inventors: Gonzalez, Carlos H., McClanahan, Robert F., Washburn, Robert D., Lusher, David M., Sze, Jerry C.
• Primary Examiner(s): Wong, Peter S.
• Application Number:
  US07/173,223
• Time in Patent Office: 453 Days
• Field of Search: 363/44, 363/65, 363/67, 363/68, 363/69, 363/70, 363/125, 363/126
• US Class Current: 363/126
• CPC Class Codes: H02M 7/05 Capacitor coupled rectifiers
• CPC Class Codes: H02M 7/08 arranged for operation in parallel
• CPC Class Codes: H02M 7/10 arranged for operation in series, e.g. for multiplication of voltage

Abstract

A rectifying power supply having circuitry for providing AC power, a plurality of capacitors responsive to the AC power for providing DC isolation and for providing capacitively coupled AC power, and a plurality of rectifying circuits responsive to the capacitively coupled AC power for providing respective DC outputs. The outputs of the rectifying circuits are coupled in series or in parallel.

Claims

1. A power supply comprising:

means for providing AC power at a frequency greater than one megahertz;

non-resonant means responsive to said AC power for providing DC isolation and for providing capacitively coupled AC power without inductors or resistors; and

a plurality of rectifying means responsive to said capacitively coupled Ac power for providing respective DC outputs.

2. The power supply of claim 1 wherein said non-resonant means comprises a plurality of serially coupled capacitors, and wherein said plurality of rectifying means are connected to respectively associated ones of said capacitors.

3. The power supply of claim 2 further including other rectifying means non-capacitively coupled and directly connected to said AC power providing means for providing a DC output.

4. The power supply of claim 3 wherein said DC outputs of said plurality of rectifying means and said other rectifying means are serially connected.

5. The power supply of claim 1 wherein each of said plurality of capacitors is directly connected to said AC providing means and wherein each of said rectifying means is respectively associated with certain ones of said plurality of capacitors.

6. The power supply of claim 5 wherein said DC outputs of said plurality of rectifying means are serially connected.

7. The power supply of claim 5 wherein said DC outputs of said plurality of rectifying means are connected in parallel.