Finnally getting some power together (I said the same thing 4mo ago) and now I can't seem to find any of the revelant discussions/pages on Battery/PS. The list archive search at wearables.blu.org is not working, is there another? I can't find some of the PS instructions/samples I have seen before such as one by Steve Mann. Can someone provide the URL(s)? I am a electronics novice, but trying hard to learn so If someone can explain why? as well as how? I would be a very happy camper. My setup: 2(in parallel) sets of 2(in series) Li-ion batt. 4 total batts. I use series for length of runtime and choices of DC->DC seemed to be better using ~ 14v input than 7.2v. I use parrallel for length of runtime and so that batteries can be changed/charged without interupting operation. My DC->DC is non-isolated and has no reverse bias protection so I want a diode somewhere between this and the batt. What does non-isolated mean compared to isolated? are isolated optically isolated? 2 of these where cheaper than one of the isolated so I thought if I blow one I am still ahead. I have heard about using Schotty Diodes for something in a PS system. I guess Schotties (Sp?) 'cause they have less Volt drop and thus use less power? What purpose do diodes fufill? Is this for parrallel batt systems so one batt does not 'charge' other batt? I have heard that you want to put a capacitor(s) somewhere (what size, I believe larger=better but with dimminishing returns). At the output (5v) side of the DC-DC to reduce noise? connected across +v and ground? Most of the above questions were answered nicely on some of the pages that I can't seem to find and did not save, sorry. Norm
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