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Function expansion unit capable of supplying power to computer

  • US 5,430,883 A
  • Filed: 01/05/1994
  • Issued: 07/04/1995
  • Est. Priority Date: 10/19/1990
  • Status: Expired due to Fees
First Claim
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1. An electronic equipment to which an external equipment is detachably connected through a power connector, said electronic equipment including internal circuit components, comprising:

  • power supply means, coupled to the power connector and the internal circuit components, for supplying an external power to said external equipment through the power connector and supplying an internal power to said internal circuit components; and

    switching means, coupled to said power supply means, for detecting whether an amount of the internal power supplied from said power supply means exceeds a predetermined value and preventing the external power from being supplied to said external equipment when the amount of the internal power exceeds said predetermined value, thereby enabling said power supply means to supply the internal power for a normal operation of said internal circuit components.

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