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I am trying to inject noise into the Voltage Source as shown in this thread. The NOISE function looks like this: V=(white(2e6*time)/10). I am new to LTSpice. How to actually use the white function? Where do I go in the LTSpice tool to enter this function?

I can right click on the voltage source and I see this window. Where do I enter the white function?

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Community
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user1406716
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2 Answers2

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Use the behavioral voltage source and apply the white() function there. Hit F2, then look for "bv" as the item in the dialog box. Drop that puppy down on the schematic. Do NOT use the regular voltage source for this.

jonk
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If you are looking for a voltage noise source and/or current noise source for use with LTspice you can download such noise sources on my GitHub page https://github.com/yildi1337/LTspiceNoiseSources.

Below you can find screenshots of two examples:

Example with voltage noise source Example with current noise source

Charly
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    I see you keep on answering with this on several questions, please don't spam. Besides, this is about `.TRAN`, not `.NOISE`. – a concerned citizen Jul 10 '22 at 15:25
  • I haven't used the sources in a time-domain simulation (.TRAN) yet. But they are working fine in a .NOISE simulation. – Charly Jul 10 '22 at 15:55