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power led of sim 300 based gsm modem is not glowing

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ravi8820

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power led of sim 300 based gsm modem is not glowing when external supply port is directly connected to the 9 volt dry cell...........How can i correct it??????? Please help me.............
 

Maybe you broke it. Maybe it is designed for 5V. You'd need to check the datasheet.
 

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