I cannot get the expected gain from my LM358. Input signal is a 1 volt100Hz wave fed via a 3K3 resistor to the non-inverting input. Feedback is from output to inverting input via 1.270M and then 750K from inverting input to earth. Power supply is 14VDC.
Can someone please give it quick thought and tell me what doesn't look right? I keep trying with no success.
Also, the gain increases dramatically when I put a 104 cap across the750K, but oscillation appears.
Pardon the simple question, I am just at student level, but there is no one on duty this time of year to ask.