I was analyzing the below circuit. In this circuit an opamp supply voltage (V+ − V) = 16V is powered by using a 45V supply and a -5V supply.
I understand the circuit to some extent.
Here U1 is supply voltage is varied such that V+ - V- is always kept as 16V.
I need a few clarifications
- What is the role of the capacitor C3?
- Why is the U1 output connected to the junction of R2 and R3?
- How do I do design calculations for circuits like this?
- How can I perform a stability analysis?