prolonging signal light battery life circuit

Published:2011/6/5 10:52:00 Author:John | Keyword: prolonging signal light | From:SeekIC

Use former two out of 4011 CMOS’s 4 non-door to constitute a chopper oscillator. And use a 1MΩ potentiometer to change the duty cycle. If the third non-door is not connected, it is helpful to apply the input end of the fourth non-door into the integrated circuit (14). Before the power is turned, the potentiometer is firstly transferred to the middle position and then is regulated. In order to prolong the original battery life of 3 times, 50% duty cycle should be provided signal light with intermittent signal current and double voltage.



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