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BATTERY_TEST_CIRCUIT

2016-05-12 04:24  
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BATTERY_TEST_CIRCUIT
Using this circuit, three levels of voltage can be displayed-normal (11 to 15 V), high (>15 V), and low (<11 V). When the voltage is low, the LED glows steadily. In the normal range, the LED is off. When the voltage is high, the LED blinks at a 1-Hz rate. This circuit is useful for assuring proper electrical system operation.