Device for measuring and indicating changes in resistance of...

Details Device for measuring and indicating changes in resistance of... Device for measuring and indicating changes in resistance of...

G - Physics

01

N

324/45

G01N 27/04 (2006.01) A61B 5/00 (2006.01) A61B 5/053 (2006.01) G01R 17/10 (2006.01)

Patent

CA 1160688

ABSTRACT OF THE DISCLOSURE A device for measuring and indicating changes in the resistance of a living body including a single battery source, a means for setting a reference voltage level provided across the battery a unity gain high input impedance and low output impedance buffer amplifier having as its input the reference voltage level, a balanceable resistance bridge having the output of the buffer amplifier applied thereto and having the living body coupled thereto as a part of the bridge, a meter amplifier for amplifying any imbalances in the bridge caused by changes in the resistance of the living body and a meter coupled to the output of the meter amplifier for indicating the changes in resistance of the living body.

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