TWO KINDS OF NOVEL MULTI-CHANNEL BIO-AMPLIFIER

WT5”BZ]The Multi Channel Bio amplifier has been widely used in many biomedical instruments,such as EEG and body surface ECG.To detect weak bio signals under strong interference,the Multi channel Bio amplifier must have the characters of high input impedance and high CMRR.Meanwhile they mut be simple to match the small dimension of the instrument.Two kinds of novel multi channel bio amplifiers are presented in this paper.They are extremely simple but perform well in the application of ECG measurement. [WT5”HZ]