>PCB layout is best left to a dedicated program like eagle. >It does mean you have to enter the schematic twice but the >Pspice version gererally needs considerable editing anyway >before converting to a "real" layout. Hmm, an integrated package like Orcad does allow circuit entry only once. However PSpice does have a problem under these conditions - it cannot handle European type value designations like 4k7, it has to be done as 4.7k. There may be times when it is necessary to add some stray inductance or capacitance to allow for circuit strays, but this is very dependant on the device models, and how good they are. _______________________________________________ http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist