[SOLVED] LT spice current source simulation is TERRIBLE

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Addez

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I'm trying to create a simple current source in LT spice, but my simulation results are total s---.
It doesn't look like anything.


My idea is, I plug 1 volt in, that voltage creates a current through the resistor which makes a voltage steadily grow over the capacitor.
But LT spice just prints some bull--- squiggly lines that changes a few pV maximum.

What am I doing wrong?
 
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Any reason you have flipped the supply voltages?

After fixing the error, you also need to set the "skip initial transient solution" option to make the simulation work. Otherwise it starts with the capacitor fully charged.
 
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    Addez

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If needed you have components called "current" in LTSpice. Also you can use "g", "g2" or "h" compoenent to create voltage dependent source.
Try your circuit with replacing V1 with a pulse signal from 0V to 1V with a fast rise time.
 

Addez said:
But LT spice just prints some bullshit squiggly lines that changes a few pV maximum.
Click to expand...

I only can say that in 99.9% of all simulation problems it is the USER who is responsible for errors and not the program.
 

Also increase your time simulation near 1 second.
 

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