Source current measurement apparatus and test apparatus

Details Source current measurement apparatus and test apparatus Source current measurement apparatus and test apparatus

2005-10-18

2005-10-18

Nguyen, Vinh (Department: 2829)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

Reexamination Certificate

active

06956393

ABSTRACT:
A source current measurement apparatus for supplying a source voltage to an electronic device and measuring a source current supplied to the electronic device includes a reference voltage generating unit for generating a reference voltage, a supply unit for generating the source voltage based on the reference voltage and supplying the source voltage to the electronic device, wherein the supply unit is provided between the reference voltage generating unit and the electronic device, a feedback unit for controlling magnitude of the reference voltage generated by the reference voltage generating unit based on the source voltage applied to the electronic device, and a measurement unit for measuring the source current, wherein the supply unit includes a first differential amplifier for outputting the source voltage corresponding to a differential between the reference voltage and a predetermined comparison voltage and a second differential amplifier for generating the comparison voltage corresponding to the source voltage outputted by the first differential amplifier and supplying the comparison voltage to the first differential amplifier.

REFERENCES:
patent: 5101153 (1992-03-01), Morong, III
patent: 6275023 (2001-08-01), Oosaki et al.
patent: 6404220 (2002-06-01), Hashimoto
patent: 6781364 (2004-08-01), Kawasaki et al.
patent: 6836136 (2004-12-01), Aghaeepour

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