Published:2011/7/12 2:28:00 Author:Michel | Keyword: Timer Circuit | From:SeekIC
The 0-10 minutes timer circuit with one second accuracy is shown as above.It uses resistors and capacitances etc. to constitute one second accuracy timer. After it is calibrating,its accuracy has nothing to do with power voltage.Because the power supply voltage influences the charging voltage and the threshold voltage of the comparator meanwhile.The timer's delay time is CR1R3/R2.
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