On Friday 24 February 2006 21:41, Dave McGuire wrote: > On Feb 24, 2006, at 4:37 PM, Marc Price wrote:
> Schematics are a logical representation of a circuit's ELECTRICAL > topology...not its implementation in the physical world. There's a big > abstraction layer there. Although the schematics can incorporate considerable constraints on the physical implementation: for instance requiring impedance-matched traces on the PCB... ;) I definitely like light symbols. The big board I made last year had only values, precisions and quality factors on the resistors/capacitors/inductors, and then I used a custom script to fill in the part numbers, footprints and availability data from a database into the BOM/netlist directly; they were never in the schematics, and all I needed to do to move from 0805 to 1206 resistors for a particular value/precision (approx. 40 of) was to change one entry in my database and regenerate the netlist. Plain text formats 4tw. Peter -- Quake II build tools: http://peter-b.co.uk/ v2sw6YShw7$ln5pr6ck3ma8u6/8Lw3+2m0l7Ci6e4+8t4Eb8Aen5+6g6Pa2Xs5MSr5p4 hackerkey.com
