Hi all. I'm planning on adding an LED indicator to the circuit of my receiver so i can tell when it is on. I want to run it off 2 9v lithium batteries because the size of them will fit well in the enclosure. Firstly the LED indicator runs on 2v dc and draws 20mA so i need to reduce the 18v coming from the batteries down to 2v. Secondly i need to reduce the remaining voltage leading to the receiver down to 9v.
So my question is 1. will my circuit work?
2.what type of resistors will i need?
Sorry if my diagram doesn't make sense, i am not very familiar with electronic circuits.
I really appreciate any help. Thanks!