BIOELECTRIC_VOLTMETER

Published:2009/7/3 3:36:00 Author:May | From:SeekIC

Used to measurebioelectric phenomena involving both DC and waveform characteristics with amplitudes ofabout 10 mV Since electrodes have impedanceof 20,000 to 100,000 ohms、guard terminal mustbe used to drive input shield Bias-current return comes from ground plate on skin.Fixedgain of 1000 gives absolute measure of inputvoltage magnitude.-R,Duris,Instrumentation Amplifiers-They're Great Problem Solvers When correctly Applied,EDN Magazine, Sept5,1977,p 133－135.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Measuring_and_Test_Circuit/BIOELECTRIC_VOLTMETER.html

Print this Page | Comments | Reading(3)