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    Dose Strike Equipment Indicator Circuit ----- Battery Power Indicator

     

    Dose Strike Energy Indicator Circuit Battery Power Indicator This circuit is used to find the star, its function is to detect the voltage of the battery, estimate the remaining power of the battery, when the amount of electricity remains, the indicator light is on. The detection accuracy is 0.1V. The core component U1 is a very common IC containing a reference voltage source and an error amplification output. The voltage of the battery is divided by R1 and R2, adding at the input of U1. Take three series of lithium batteries as an example. When the amount of electricity is about one-third, the voltage will drop to 10.8V. The potential of the U1 output is pulled by R3, the indicator LED1 is on. C1 and C2 are rumor and uncomment capacitance, respectively. Author: Zhang Fengmei

     

     

     

     

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