[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Help-gnucap] spice models

From: Mogliii
Subject: Re: [Help-gnucap] spice models
Date: Wed, 07 Jul 2010 21:44:06 +0100
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20100528 Thunderbird/3.0.5


thank you for the input.

I found this very helpful page:
Actually, I find that page to be rather confusing. I understand
why you are confused.
At least that page told me which of the 30 attributes from the dropdown are actually needed and what they should be. It appears that gEDA has little users and thus little tutorials/howto's or the other way round? At least for me its pretty difficult to get started for a free-time project.

I recommend trying NGSpice.
I did. It build the netlist and simulates without error. But the results are not what I expect and are wrong (since I know what the circuit does in reality). What I did is vary the resistance R1 that will change the output current, since there are always 1.25 V dropping over it.

As far as I know, no gEDA symbols include simulation models.
Hmm... Maybe this should be communicated to new users. I was very happy to find the LM317 in gschem until I found out that it does not simulate. But then ...
It would be nice
if we could provide that too, but it's a lot of work, and we
lack the manpower to do it.

Next thing I will try is to simulate a circuit with TLC227 opamps that I got from spicelib. Will report my success or failure here :) Might take a while tough. The current source is already working on my breadboard, so maybe I can skip it.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]