akozak at hourglass.com
Wed Feb 29 12:34:21 PST 2012
I ran across this and thought it might be of some interest here. It's hosted by Digi-key. I tried it out and it works as well as Visio, with the added advantage of compiling a BOM and the ability to share the end result over the web. Unfortunately, there are no tube symbols.
More information about the Amps