choke filter

[Nigel Goodwin]

Perhaps it would be an idea to tell us EXACTLY what you are trying to do?, if it's simply that you're playing with a simulator, then you're probably wasting everyones time (including your own).

However, if you're trying to design a 1950's (or 30's or 40's) valve power supply, then you're also wasting your time with such questions about noise.

 

[zhi_yi]

okay thank you very much

i am sorry for wasted everyones time i just want to know is it right that the inductor source noise, and i try to simulate a circuit with the inductor, so, i choose a simple power supply circuit for compare is it true that inductor is the source of noise.. okay.. thank you all

 

[Optikon]

okay thank you very much

i am sorry for wasted everyones time i just want to know is it right that the inductor source noise, and i try to simulate a circuit with the inductor, so, i choose a simple power supply circuit for compare is it true that inductor is the source of noise.. okay.. thank you all

You havn't wasted my time, I choose to waste my own time. :lol:

I fyou want to study noise of individual components, you will need to setup a noise simulation with proper modelling. The power supply is a poor choice because it overcomplicates things. All you need for a simple noise simulation is a generator and a component. If you study up on noise theory, you will find that pure reactances do not exhibit intrinsic noise sources, so why would you think a simulation would show one? If the sim did, I would believe it to be incorrect.

 

[zhi_yi]

okay opticon.. thank you..