| 摘要 |
A connection switch jack has first and second sets of pins, and a set of spring contacts for connecting the first and second sets of pins when the spring contacts are in a normally closed position. The jack has a receptacle for receiving a plug having a plurality of plug contacts, wherein receipt of the plug connects corresponding plug contacts to selected pins of the first set of pins via the spring contacts and then moves the switch off of the normally closed position to break the contact between the first and second sets of pins.
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