I built a non-inverting amplifier from an LM358P but don't quite get the results I am expecting.
I have a 150mVpp sine wave input applied to the positive terminal with 350mVdc offset to avoid clipping (I am using single supply).
R2=10KOhm, R1=1KOhm, so I should be expecting a gain by a factor of 11 on the output end (which more or less looks accurate from the graphs).
Still new to using the oscilloscope but as far as I gather, I should be reading 300mVpp on Channel 1 but I am getting 340mVpp?
And the vertical offset is -698mV which doesn't make sense because my supply rail only goes from 0V to 15V.
Also, I can't measure my output for some reason as it just comes up with "***" for the readings.
Any suggestions? I am using Siglent SDS2104xP.