I want to experiment with filtering out noise on various voltages etc. but not sure how to configure LTSpice to create a noisy voltage supply. Yes, you can inject noise using the arbitrary voltage (or current) source, then use things like the random or white function to create some noise. My Fortiva

 

Hi jems,
Welcome to AAC.
Do you have a sample asc file you could post.?
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Hi jems,
This is one simple way, use the free Audacity audio program to generate a 'wav' file of White/Pink or Brownian noise.
The 'E1' V to V source is used as an attenuator.

Is this any help.?
E

BTW: rename the wav source file to suit your PC path