LED voltage measurement circuit

Published:2011/4/7 1:36:00 Author:Nicole | Keyword: LED, voltage measurement | From:SeekIC

This circuit uses LED to indicate four different level class voltage, the RS339 is four comparators. When the input voltage is outstripping one comparator's reference voltage, then this comparator and the other comparators below it are all output low level, the relevant LED is lightening, indicated the high and low of input voltage. As voltage reference point, LED1 is zero point voltage indication LED, and it is always conduction.



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