Electricity: measuring and testing – Plural – automatically sequential tests
Patent
1986-02-27
1988-09-27
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Plural, automatically sequential tests
324158T, 324158R, G01R 1320
Patent
active
047744561
ABSTRACT:
An accessory device for use with a curve tracer to permit the simultaneous display of current-voltage characteristics of test and reference devices. The accessory device is adapted to connect to a curve tracer having first, second and third terminals, and including as an output on the second terminal, a step signal that cyclically takes on a plurality of voltage levels. The curve tracer must further display for each such voltage level, the voltage-current characteristic of a circuit connected between the first and third terminals. The accessory device is plug-connected to these terminals. A device selector on the accessory device is thus connected to receive the step signal, and alternately connects the first terminal to either the test device or reference device in synchronization with the step signal. The third terminal is electrically connected to both the test and reference devices. Pin selector switching is provided on the accessory device to select a pair of pins on the test device for connection in a first circuit path between the device selector and the third terminal, and to correspondingly select an identical pair of pins on the reference device for connection in a second circuit path between the device selector and the third terminal.
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Eisenzopf Reinhard J.
Nguyen Vinh P.
The Boeing Company
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