I have a question regarding an amplifier circuit that I’m designing. I was given a template to improve upon, and have made several changes to the circuit. Refer to the attached circuit schematic. Essentially, I need to create an amplifier that has a gain from 0 to 10 using an op amp that is powered by two +/- 20V voltage sources. I have a potentiometer that adjusts the gain of the input, and then have the op amp configured to have a maximum of a 10 gain. This is set by the 9K ohm and 1K ohm voltage divider. However, I am noticing attenuation of the output signal from what I’m expecting. The op amp should be able to provide an output of +/- 20V. When I set the input signal to be 2 volt peak and have the gain configured to 10, I should expect an output to be 20v peak. However, looking at the output signal, (green trace, channel b) the output only reaches 16.279V. For some reason the signal is attenuated as if the op amp is railed. I can’t explain why this is happening. Any ideas?