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Method to Allow Automatic Probing of File Mounted Logic Cards Disclosure Number: IPCOM000053746D
Original Publication Date: 1981-Nov-01
Included in the Prior Art Database: 2005-Feb-12

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Related People

Wheeler, SE Wheeler, WR [+details]


The most commonly used probe for addressing logic cards is the spring-loaded contact, readily available in numerous configurations. This probe addresses square or circular pads incorporated into the card during etching. With specially drilled card stock, it is possible to etch a pad of sufficient size to accept large tolerance variations between the spring-loaded probe and the card itself (which could serve as a locater for the probe). When using standard card stock drilled on .100-inch centers with maximum size pads of .056, it is still possible to accomplish automatic probing with typically sharp-ended probes only if located by the card itself.