At 09:12 AM 3/6/02 +1300, Russell wrote: > > > Looking at published plans, it seems that some people routinely specify 2 >x > > 2200. Others just put in a single 1000. What's a guy to do? > >Depends largely on what peak ripple YOU wan't to tolerate and why. >Larger caps generally never hurt performance. Smaller caps might. > Too large a filter capacitor will result in too long a rise time on the final regulated voltage. PIC microprocessors have a maximum "come-up" time specification for start-up reliability. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral@lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire" ================================================================ -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body