On Thu, Jun 16, 2011 at 12:33 PM, Oli Glaser wrot= e: > On 16/06/2011 03:36, Xiaofan Chen wrote: >> On Thu, Jun 16, 2011 at 10:21 AM, Oli Glaser = =A0wrote: >>> So - what is the standard symbol for a power net? or what do people pre= fer? >>> >> We normally use a small triangle with an obvious net name >> like VCC_5V. >> >> > > Thanks - I've seen that type too, and also one like an arrow. There seem > to be (too) many different versions out there.. :-) > Is the triangle symbol you use from a particular standard, or is it just > an arbitrary choice made by your company? > Unless someone knows what the current IEC or ANSI standard symbol is, I > think I'll probably just go with what I know best (and seems most common > in the schematics I've seen)) which is the T shaped one. My colleague told me there is an IPC standard for this. Maybe IPC-2612. http://www.ipc.org/TOC/IPC-2612.pdf (table of contents only, you have to pay for the standard. Right now I do not have access to this document. She also told me the triangle symbol is the most popular. The following site shows two symbols (small circle and the Y shape) for the voltage supply but then you can see it uses the triangle for the global power bet in the example schematics as well. http://www.frontdoor.biz/HowToPCB/HowToPCB-Schematics.html The T shape seems to be not as popular and I only saw them in some IC design type of schematics. --=20 Xiaofan --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .