Mike not everyone will see your posting, as many filter their email from = the piclist according to the topic headings. Colin Re-posted with topic heading. :: Hi Folks, :: :: I have a couple of queries about the LiniStep before I start :: building it. :: :: I have a few UPA1476H which is four NPN Darlington transistors in :: a DIL :: package. Could these be used instead of the four TIP122's. :: :: The value of R18-R29 , in the diagram they only have one value :: against two :: resistors, eg R18 and R19 have 150R against them, is this for each :: resistor or :: the total for for both resistors?. :: Likewise the R1-R6 are marked as 1R 3W, is this supposed to mean :: six 1R :: resistors or the total resistance?. :: :: thanks, Mike --=20 cdb, colin@btech-online.co.uk on 3/12/2005 Web presence: www.btech-online.co.uk =A0 Hosted by: =A0www.1and1.co.uk/?k_id=3D7988359 We cannot become what we need to be by remaining what we are. (Max de Pr= ee) --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist