Hello there,
i'm trying to do this ECG circuit (hobbying around).
What i have so far is the input fed to an optocoupler(it is amplified before the opto), and then i try to amplify it, but for some reason the opamp would not amplify large enough for me.
The output i get is hardly 0.1V p-p and i'm trying to get a larger voltage to feed to a PIC18. i tried changing the resistor values on the opamp but i just couldnt get a higher voltage! Can someone help and see if i've gone wrong somewhere? i've attached a portion of my circuit. Any help is appreciated. Thanks.
i'm trying to do this ECG circuit (hobbying around).
What i have so far is the input fed to an optocoupler(it is amplified before the opto), and then i try to amplify it, but for some reason the opamp would not amplify large enough for me.
The output i get is hardly 0.1V p-p and i'm trying to get a larger voltage to feed to a PIC18. i tried changing the resistor values on the opamp but i just couldnt get a higher voltage! Can someone help and see if i've gone wrong somewhere? i've attached a portion of my circuit. Any help is appreciated. Thanks.
Attachments
-
27.4 KB Views: 87