For most of the electrolytic capacitor, they cannot be used when application voltage is higher than the rated voltage. For ceramic Capacitors, they won't be damaged if the application voltage is higher but doesn't go above 1K Volts~a few Kilo-volts. Anyone has a info how capacitor changes vs. voltage when lower voltage ceramic cap is used at a higher voltage application? Or it is just useless due to capacitor reduced too much? Funny N. Au Group Electronics, http://www.AuElectronics.com http://www.AuElectronics.com/products http://augroups.blogspot.com/ -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist