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Protection method against reverse current from AC adapter to Docking connector

IP.com Disclosure Number: IPCOM000011904D
Original Publication Date: 2003-Mar-25
Included in the Prior Art Database: 2003-Mar-25

Publishing Venue

IBM

Abstract

Disclosed is a circuit for a protection method against reverse current from AC adapter to Docking-connector. Notebook PC has a Docking-connector to connect the Docking-Station to expand the function of a Notebook PC. When the Docking-Station is not attached, the AC adapter voltage is applied to the power-supply-pins which exist inside the Docking-connector. A mechanical shutter was needed to the Notebook PC to hide the Docking-connector for safety but the circuit can prevent the danger by a electrical method without a mechanical shutter.