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例1 “富士”石英钟换电池后只用了十天即停走。分析检修:测电池电压由1.5V降为1.37V,工作电流3μA均正常。试换新电池,秒针顺利走动。当电池降到1.4V左右又停走。判断可能是因电路起振电压过高(正常时在1.3V也应能走动)。用烙
Example 1 “Fuji” quartz clock after only ten days to change the battery stopped. Analysis and maintenance: measured battery voltage dropped from 1.5V to 1.37V, the working current of 3μA are normal. Try a new battery, the second hand move smoothly. When the battery dropped to 1.4V and stopped. Judgment may be due to circuit starting voltage is too high (normal at 1.3V should be able to move). Ironed