zelin
Newbie level 3
Hi guys
i need a bit help if anyone can i am making an ecg amplifier using this circuit mentioned in elektor
**broken link removed**
according to journal the right/left arm signals are amplified with 201 gain and feedback signal is amplified 31 times and then attached to right leg to provied better CMRR and should neutralize the common mode signal between them
ic4 merely is used to set CMRR by changing potentiometer
the problem i am facing is my signal when comes out of ic 1 and ic 2 is saturating its a 50hz noise signal if i am right... the feedback purpose was to remove this saturation but i cant get it right i have made exact circuit and just this modification that instead OF 24K9 resistors i got 24k3 but i added 600 resisters to them
if anyone can help me over that ASAP pls
i need a bit help if anyone can i am making an ecg amplifier using this circuit mentioned in elektor
**broken link removed**
according to journal the right/left arm signals are amplified with 201 gain and feedback signal is amplified 31 times and then attached to right leg to provied better CMRR and should neutralize the common mode signal between them
ic4 merely is used to set CMRR by changing potentiometer
the problem i am facing is my signal when comes out of ic 1 and ic 2 is saturating its a 50hz noise signal if i am right... the feedback purpose was to remove this saturation but i cant get it right i have made exact circuit and just this modification that instead OF 24K9 resistors i got 24k3 but i added 600 resisters to them
if anyone can help me over that ASAP pls