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3_state_battery_indicator

2016-05-09 22:49  
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3_state_battery_indicator
This circuit shows the state of a battery (typically 3V) by means of an LED and an ICL7665, The LED remains on if the battery voltage is above 2.8 V, and flashes if the battery voltage is between 2.35 and 2.8 V. The LED remains off if the battery voltage drops below 2.35V.