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I have been using Circuit Wizard (Its the only offline program that I can find!). Unfortunately, it is really basic, and I have outgrown it.

I need to simulate a 5V circuit with a noisy power supply, with a lot of ripple/noise (anything from 0.1v to 1v). I am an electronics novice, and I have tried all sorts of things, like these: Crazy Attempt 1 Crazy Attempt 2 Crazy Attempt 3

And none of them work properly. I was wondering:

  1. Is there a way to make this work at all?

  2. Is there a good offline circuit simulator (as I do not always have internet access) that is easy to use, and can simulate noisy power supplies?

EDIT: I do not mind if the programs are freeware or paid.

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    \$\begingroup\$ Yes : Simulate your noise source in series with the ideal source. Voltage sources in series add. (Ideal) voltage sources in parallel are a logical contradiction. \$\endgroup\$
    – The Photon
    Oct 12, 2014 at 19:54
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    \$\begingroup\$ BTW, if you use Windows you might want to look at LTSpice for a free (as in beer) simulator with a good-sized user community. \$\endgroup\$
    – The Photon
    Oct 12, 2014 at 22:07

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You need to put your noise source in series with the ideal source:

schematic

simulate this circuit – Schematic created using CircuitLab

Voltage sources in series add. (Ideal) voltage sources in parallel are a logical contradiction.

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