Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1989-12-07
1991-10-22
Wieder, Kenneth A.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324158T, 324512, 324537, G01R 3102
Patent
active
050598970
ABSTRACT:
A system and method for testing the continuity of interconnecting nets on a substrate to be used in multi-chip technology is provided. The system includes coupling a test pad (15) to the net (12) to be tested. The test pad (15) is coupled through a diode (34) to a common node (32). The voltage of a first node (16) of the net (12) is sensed by a voltmeter (38) which is coupled to ground. A predetermined current signal is applied to each node (16, 18, 20, 22) in the net through the use of a probe (42). The voltage of the remaining nets (14) is sensed by a voltmeter (44). If an erroneous interconnection (31) is present between the net (12) to be tested and any other net (14) on the substrate, the voltage of the other net (14) will fluctuate. The voltmeter (38) will indicate if there is an electrical connection between the node (16) and the test pad (15) during testing. If an electrical path is established between each node in the net (12) and test pad (15), the continuity of the net (12) is established through the operation of Ohm's law.
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Aton Thomas J.
Hashimoto Masashi
Kwon Oh-Kyong
Mahant-Shitti Shivaling S.
Malhi Satwinder
Burns William J.
Comfort James T.
Kesterson James C.
Sharp Melvin
Texas Instruments Incorporated
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