Active accelerated discharge of a capacitive syste

专利名称：Active accelerated discharge of a capacitive

system

发明人：GHOLAMI GHADIR ROBERT,PHAM KHUONG

HUU

申请号：US16595998申请日：19981002公开号：US6182230B1公开日：20010130

摘要：An active circuit for rapidly discharging stored energy in a capacitive system. Thecircuit is comprised of a variable impedance circuit, a voltage detector, and a time delaycircuit. The variable impedance circuit includes a variable impedance output path

configured to be connected between a Vcc bus of the capacitive system and ground. Thevoltage detector circuit includes an input coupled to the Vcc bus and an outputconnected to an input of the variable impedance circuit. The voltage detector circuit isconfigured to maintain the variable impedance output path in a high impedance conditionwhile the Vcc voltage remains above a predetermined minimum value. The time delaycircuit is coupled to the input of the variable impedance circuit and configured to maintainthe variable impedance output path in a low impedance condition for a duration after thevoltage of the Vcc bus drops below the predetermined minimum.

申请人：INTERNATIONAL BUSINESS MACHINES CORPORATION

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