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Optocoupler

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amrutabhujbal01

Joined Aug 30, 2017
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Hello,
I want to design circuit for display mains voltage on LCD using Optocouple and it is 3 Ph voltage.For every phase there is one optocouple and also design phase sequnce correct or not circuit design.I am looking for optocoupler 4N37..please recommend any guideline
 
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