You can try ExpressPCB ( http://www.expresspcb.com/ )
I like it because you can use it once every six months without having to dig
into documentation to find out how it works !
I use it for all my diagrams and printed boards.
There are a lot of components already in the library, and you can build your
own very easily. I have made some custom components including tubes (triode,
If you're interested, i can drop them to you.
Just let me know,
ps: i forgot to mention that it's FREE !
2008/3/6, Paul Kelley N1BUG <firstname.lastname@example.org>:
> I hope this isn't too far off topic...
> Can anyone recommend free or low cost software for drawing tube
> amplifier schematics? I have been searching for some time but
> haven't found anything with a component library well suited to this
> purpose (often missing are such things as variable caps,
> potentiometers, tubes, relays, switches, and other parts common to
> amps). Or do I need to make my own component library to do this?
> Many years ago I had built my own component library for some old DOS
> 'paint' type program, which worked well enough. Sadly a series of
> stupid actions on my part resulted in loss of those files long ago.
> Paul N1BUG
> Amps mailing list
Patrick Egloff - TK5EP
email : email@example.com
Fax : +33 826 698 954
Web page : http://tk5ep.free.fr
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