Method and apparatus for testing open collector electrical circu

Details Method and apparatus for testing open collector electrical circu Method and apparatus for testing open collector electrical circu

1981-11-13

1984-08-14

Strecker, Gerard R.

Electricity: measuring and testing

Plural, automatically sequential tests

G01R 1512

Patent

active

044659687

ABSTRACT:
A method and apparatus for testing a plurality of electrical circuit devices (100a . . . 100n FIG. 4) to determine individual device failures wherein the input, (110-117) output (118-121) and power leads (130) of each device are interconnected with corresponding input, output and power leads of the other devices to form common input, output and power leads. The ground lead (140 . . . 140n) from each device is individually connected with test apparatus (102). Test signals are introduced onto the common input (110-117), output (118-121) and ground leads (130) and signals, responsive to the test signals, are monitored on the individual ground leads (140 . . . 140n) by test apparatus 102 to determine individual device failure.

REFERENCES:
patent: 4063121 (1977-12-01), Bartlett
patent: 4180203 (1979-12-01), Masters
patent: 4244048 (1981-01-01), Tsui
patent: 4342959 (1982-08-01), Skilling
Millman et al., "Pulse Digital and Switching Waveforms", 1965, McGraw Hill, pp. 322-323.
Data Sheet-"41EG Integrated Circuit", Western Electric, Sep. 1974, pp. 1-5.

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