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Electronic charging system

  • US 5,481,177 A
  • Filed: 09/29/1993
  • Issued: 01/02/1996
  • Est. Priority Date: 08/18/1992
  • Status: Expired due to Fees
First Claim
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1. A charging system comprising:

  • an input terminal for coupling to a power source;

    an output terminal for coupling to a load to be charged;

    an adjustable regulator having an input coupled to said input terminal, an output coupled to said output terminal and a control terminal, said adjustable regulator producing a controlled signal at its output responsive to the control signal applied to said control terminal;

    controller means having an input coupled to said output terminal and an output coupled to said control terminal, said controller means including means to sense the state of charge of the and, responsive thereto;

    (a) apply a predetermined charge-on control signal to said control terminal responsive to the load'"'"'s charge state being less than a predetermined full charge level to cause said adjustable regulator output to charge the load;

    (b) apply a predetermined charge-off control signal to said control terminal, responsive to the load'"'"'s charge state being greater than a predetermined full charge level, to cause said adjustable regulator output to cease charging the load; and

    (c) reapply said predetermined charge-on control signal to said control terminal responsive to the state of charge of the load dropping from said predetermined full charge level to a different predetermined recharge level; and

    ,means for predeterminedly tapering charge rate to the load as the load approaches said full charge level.

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