On Friday 26 December 2008 21:53, John Luciani wrote: > Usually there is a "Service Life" quoted as number of hours > at rated voltage at a specified core temperature. To > increase the life of the capacitor you decrease the operating > temperature and the operating voltage. For every 10degC > decrease in temperature you get a factor of 2 in life (check the > Arrhenius equation). I don't know the multiplier for voltage.
It is a nonlinear relationship. There is an optimum voltage, and it gets worse either higher or lower. Service life can be very bad with near-zero voltages like you get when using electrolytics as coupling caps in op-amp circuits, especially when they can reverse under some signal conditions. _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
