One Second Timebase. Here is the instructions how to get one-second (1hz) pulses from a broken quartz clock. This is a precision timebase generator that can be used in any project that needs exactly one-second pulses. (6/11/2006)
Mon 05 Feb 2007 10:00:38 AM CET - permalink - - http://www.josepino.com/circuits/index?one_second_timebase.jpc