So I have a load that needs constant power to maintain a specific temperature and this load changes over time. For this, I am using the design outlined in the following article:
Now to design the error amplifier shown in the article I want to use a difference amplifier with a closed loop gain of 5 V/V along with a 100uF shunt capacitor at the output of the amplifier to create (at least what I think is) a PI controller.
Now my question is, is the capacitor necessary and does adding it actually create the behaviour of a PI controller? I added it because I wanted to prevent crazy oscillation when I turn on the system. I would also like to avoid feeding too much power to the load as well since it could damage the system. However, I am not too sure if adding that helps at all.