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System and method for power-efficient charging and discharging of a capacitive load from a single source

  • US RE37,552 E1
  • Filed: 12/05/1997
  • Issued: 02/19/2002
  • Est. Priority Date: 04/22/1994
  • Status: Expired due to Term
First Claim
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1. A system for efficiently charging and discharging a capacitive load from a single voltage source of a first potential consisting of:

  • a first switch for selectively charging the load;

    a second switch for selectively discharging the load;

    plural capacitive elements; and

    switch means for selectively connecting each of the capacitive elements to the capacitive load to gradually charge or discharge the capacitive load.

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