no. 7 alkaline battery charging and discharging circuit diagram

　　no. 7 alkaline battery charging and discharging circuit diagram - 18650 no. 7 alkaline battery over-discharge indication circuit made using CMOS micro-power voltage detector HT7030. It can automatically light up the LED indicator when the discharge voltage of the 18650 no. 7 alkaline battery is lower than 3V to inform the user that "the battery is over-discharged". Recharged”. no. 7 alkaline battery charging and discharging circuit diagram

　　The 18650 no. 7 alkaline battery over-discharge indication circuit produced using the CMOS micropower voltage detector HT7030 can automatically light up the LED indicator when the discharge voltage of the 18650 no. 7 alkaline battery is lower than 3V to inform the user that "the battery should be charged."

　　The HT7030 in the picture is a commonly used CMOS micropower voltage detector. It has a built-in micropower precision reference voltage source and a micropower Schmitt voltage detector (hysteresis voltage is about 100mV). The output stage uses a leakage Extremely open circuit output. The detection voltage of HT7030 is 3.0V. When the supply voltage of HT7030 (voltage of no. 7 alkaline battery) is higher than 3.0V, the NMOS field effect transistor inside the output pin ① is turned off, so the LED indicator light will not light up. At this time, the operating current of the entire voltage detection circuit is only 2μA.

　　When the discharge voltage of the no. 7 alkaline battery is ≤3.0V, the NMOS field effect transistor inside pin ① of the output terminal of HT7030 is turned on, the output of pin ① becomes low level, and the LED indicator lights up to inform the user that the battery voltage is lower than 3.0V. , it’s time to recharge.

　　no. 7 alkaline battery charging and discharging circuit diagram

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