Electricity: electrical systems and devices – Safety and protection of systems and devices – Impedance insertion
Patent
1990-09-04
1991-07-02
Paumen, Gary F.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Impedance insertion
307130, 307140, 439801, H02H 900
Patent
active
050290380
ABSTRACT:
A dual resistance connector system is provided to allow the replacement of power regulators in a computer system without removing power from the operating voltage bus. The new power regulator can be "hot plugged" into the voltage bus without creating a voltage drop on the bus which could lead to voltage transients and logic errors. The low resistance bus bar is augmented by a retractable high resistance contact. The high resistance contact is configured to make electrical connection with the operating voltage bus before the low resistance contact. The establishment of a high resistance circuit allows charging of output filter capacitors without creating a large voltage drop on the operating voltage bus. As installation continues, the low resistance bus bar makes contact and is held in position by a fastener. The fastener is initially held out of electrical contact by a compression spring.
REFERENCES:
IBM Technical Disclosure Bulletin, "Replacing a Power Supply Under Microprocessor Control in an Operating System", vol. 27, No. 12, May 1985, pp. 7239-7241.
Covi Kevin R.
Rearick Donald P.
International Business Machines - Corporation
Paumen Gary F.
Walker Mark S.
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