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Logic Digital Tester by LM324

Logic Digital Tester by LM324

This is Logic Digital Tester Circuit. It uses the level input about 5V and use the integrated circuit LM324.
Be Main Part electronics perform Drive All LED. Then use Current very low about 10mA by have potentiometer be formed fine the value threshold give just right with the level logic digital both of 3 the level that use by LED1(Green) be the level high and LED2(Red) Be the level LOW and The LED3(Yellow) be the level High IMR . The detail is other please see in the circuit please sir

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