On Fri, Apr 8, 2011 at 10:20 AM, Andre Abelian wr= ote: > Hi all, > > mistakenly I used super cap reverse polarity so + pin is connected to gro= und and > - pin goes to > RTCC chip. when I checked cap was charged and every things working fine h= ardware > wise. > this mean super cap is charged wrong polarity without knowing but as far = as > functionality it works fine. > looking inside electrolytic cap it is only a pair of foil wrapped togethe= r. my > question is this > how does + pin define? or how do they figure out + and - pin? > based on my testing electrolytic cap do not have polarity. > > any idea how + pin is defined? > > AA > http://en.wikipedia.org/wiki/Electrolytic_capacitor Hint: it's not the foil, it's the electrolyte. Regards, Mark markrages@gmail --=20 Mark Rages, Engineer Midwest Telecine LLC markrages@midwesttelecine.com --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .