Bonding point polarity determining apparatus

Details Bonding point polarity determining apparatus Bonding point polarity determining apparatus

1992-05-22

1994-02-15

Tokar, Michael J.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

With auxiliary means to condition stimulus/response signals

324158D, 324133, G01R 1900

Patent

active

052870642

ABSTRACT:
An apparatus for determining the polarities of bonding points to locate false bonding connections including an applied voltage output circuit which outputs positive and negative voltages, a switching circuit which after a wire is connected to a bonding point impresses voltage from the applied voltage output circuit to the bonding wire, a D/A converter which outputs standard positive and negative voltages, a polarity determining comparator which determines the polarity of the bonding point by comparing the voltage detected on the bonding wire with the standard voltage, and a memory which stores such a determination result for each bonding point.

REFERENCES:
patent: 3617879 (1971-11-01), Mugnier
patent: 3975683 (1976-08-01), Behrens et al.
patent: 4346347 (1982-08-01), Kamata et al.
patent: 4779041 (1988-10-01), Williamson, Jr.
patent: 4779043 (1988-10-01), Williamson, Jr.

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