Moreover, in accordance with the invention, {HEAD ~ overloading} of the ECG amplifier is prevented by {TAIL ~ provision} of series connected and oppositely oriented zener diodes, and parallel connected diodes in series with a blocking capacitor for blocking DC voltage 
Moreover , in accordance with the invention , { HEAD ~ overloading } of the ECG amplifier is prevented by { TAIL ~ provision } of series connected and oppositely oriented zener diodes , and parallel connected diodes in series with a blocking capacitor for blocking DC voltage
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