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Arc Suppressing Connector

IP.com Disclosure Number: IPCOM000049614D
Original Publication Date: 1982-Jun-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Davenport, DW: AUTHOR [+2]

Abstract

This article describes an arc suppressing connector which can be used where a printed circuit card must be removed from a DC power contact in a power on state.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 99% of the total text.

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Arc Suppressing Connector

This article describes an arc suppressing connector which can be used where a printed circuit card must be removed from a DC power contact in a power on state.

Referring to the drawing, a connector housing 10 includes a primary contact 12 connected to a source of DC power and a secondary contact 14 connected to the source through a circuit which includes a capacitor 16, a first resistor 18 and a second resistor 20. The resistor 20 is a high impedance leakage resistance. The housing 10 receives a printed circuit card 22 which receives its power from the primary contact 12.

When the card 22 is removed, the electrical connection between the primary contact 12 and the card 22 is broken first. The impedance of capacitor 16 and resistor 18 is much lower than the impedance through air so that most of the energy which would normally cause an arc between the primary contact 12 and the card 22 instead goes into charging capacitor 16.

As the card is withdrawn further, continuity between the card 22 and the secondary contact 14 is broken. However, no arc occurs because the series combination of capacitor 16 and resistor 18 presents a high impedance to the input voltage. Capacitor 16 eventually discharges through the leakage resistance 20.

While resistors 18 and 20 are shown as discrete components, they could be virtual components, existing in the form of capacitor leakage and lead resistances.

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