Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1992-11-09
1994-10-18
Nguyen, Vinh
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324678, 3241581, G01R 3102
Patent
active
053571916
ABSTRACT:
The disclosure shows the use of a plurality of individually moveable probes in an X-Y plane which may contact points of networks on a circuit board on either side thereof and measure the discharge time of a charged network. The specification also discloses the utilization of a common connector to a conductive reference plane to provide a terminal point for any of the plurality of probes. Each probe is a dual-purpose probe in that it may be utilized for a discharge test of each network, or it may be used in a combination with another probe to measure the resistance of a network. In most instances, the circuit board under test will include a common conductive reference plane which may be utilized as one side of a test source. Each network is tested as to discharge time against a norm which is previously determined; if the discharge time is too long above the norm, such long discharge time will indicate a possible fault. If the discharge time is too short the short discharge time will indicate a possible fault in the network. The probes may be switched from the discharge circuits to a mode in which two probes are connected to a power source and resistance measuring circuit to measure the resistance of a network or parts thereof to check for continuity or to measure the resistance between two networks to check for a short between two networks.
REFERENCES:
patent: 4565966 (1986-01-01), Burr et al.
patent: 5006808 (1991-04-01), Watts
patent: 5023545 (1991-06-01), Marques
patent: 5124647 (1992-06-01), Watts
patent: 5138266 (1992-08-01), Stearns
patent: 5140272 (1992-08-01), Nishimatsu et al.
Montgomery Robert H.
Nguyen Vinh
Probot, Inc.
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