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