CMOS Simulation

QSPICE
1

Hi all could you help me? I’d like to simulate a CMOS following the example from: https://sourceforge.net/projects/cd4017/
However, it does not work in QSPICE at all.

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image795×433 12.9 KB

Thanks.

2

Since you are a basic member, you should be able to upload your schematic (.qsch) and CD4017 model file (renaming it to .txt if file type not allow)

3

Here are the model and the library.
cmos.qsch (6.6 KB)
CD4017B.lib (3.0 KB)

4

This model file may only work in ngspice. It contains syntax (optional:) or a .model for ueff, which is not available in Qspice. This model will also not work in LTspice.

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image872×703 41.6 KB

2 Likes
5

I didn’t add rise time, fall time, or propagation delay; only included its logic.

CD4017-Decade-Counter.qsym in KSKelvin-Github
example.CD4017.qsch (8.5 KB)

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image1750×671 85.3 KB

2 Likes
6

Thank you very much, Kelvin.

1 Like