I am designing a circuit which requires high-voltage DC. My plan is to step-up my mains (120VAC) with a transformer and then pass that through a FWB. After the FWB, I want to smooth the signal into a nice DC. I am aware that this is often done using a smoothing capacitor.
But the circuit in that drawing has an inductor in the filter circuit, near the place where I just expected to see a smoothing cap.
- What's that inductor there for?
- What is the name for this kind of filter? (if not just "LC filter")
- Why would I do this instead of just have a smoothing capacitor?