Parametric test circuit with plural range resistors

Details Parametric test circuit with plural range resistors Parametric test circuit with plural range resistors

1993-01-26

1995-05-09

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324 731, G01R 3122

Patent

active

054143527

ABSTRACT:
A parametric test circuit adapted for testing a device in two alternate modes of operation. In one mode, the circuit forces a voltage on the device under test and measures the current drawn. In the alternate mode, the circuit forces voltage on the device under test and measures the voltage. The same circuit components including a difference amplifier are used in both modes of operation, and they are merely reconfigured by a plurality of switches. Further, a plurality of range resistor sections are used, and the nonselected sections are prevented from interfering with the selected section by zero-biasing anti-parallel diode pairs in series with the nonselected range resistors.

REFERENCES:
patent: 3988672 (1976-10-01), Cowart
patent: 4044244 (1977-08-01), Foreman et al.
patent: 4583223 (1986-04-01), Ioue et al.
patent: 4646299 (1987-02-01), Schinabeck et al.
patent: 4739252 (1988-04-01), Malaviya et al.
patent: 5200696 (1993-04-01), Menis et al.
"Programmable Stimulus/Measurement Units Simplify Device Test Setups", Hewlett-Packard Journal, Oct. 1982.

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