And, if an PIC draws 1 mA, how often do you have to "ignite" to keep the PIC running ? :-) Jan-Erik. Peter L. Peres wrote : [mailto:plp@ACTCOM.CO.IL] > *>Olin Lathrop wrote: > *>Just to get eccentric with the idea, what about > *>using a piezo gas-oven lighter as a remote control's > *>power source? It might be hard to rectify and filter > *>those 10kV+ spikes but it's a renewable power source > *>you can buy for a couple of dollars and puts out some > *>decent energy... ;o) > > You do not have 10kV if you put a capacitor across it. It produces about > 20mJ. Using Wc=C*U^2/2 and wanting 5V C results: > > C=2*Wc/U^2=2*2*10^-2/25~=1500uF. > > Use two shottky diodes as rectifiers. And tell us if you zap yourself good > ;-) -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads