David VanHorn wrote: > I don't know if I can quickly put my finger on it, but Jim Williams of > Linear had published a rather good formula to predict capacitor lifetime > based on temperature, ripple current, applied voltage, etc.. That would be something really useful. I tried to find it through Google, but no luck. Can you add any information that might help in finding? Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist