relay gets heated up

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Deexith Hasan

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i'm using 12 volt relay kt-909 in 15 volt power supply the relay gets heated up the COM has more heat compared to other pins y?? the relay is working normal......
 

Put a 3V bulb or a white LED or an appropriate resistor between the 15 volt power supply and the relay coil.

The COM pin probably has the better thermal conductivity to the relay coil.
 

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