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Motor Problem

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adrianvon

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Hi,

I am driving a 12VDC 2A motor with a MOSFET h-bridge, where with the same ground i have the 7805 voltage regulator connected. Now when the motor is active, the h-bridge is draining approx 0.2V to ground. This is causing the 7805 IC output to increase to approx 5.2V.

Is it normal that the h- bridge leak some voltage to ground ?? if yes, how can i prevent the 0.2V from going to the 7805 ground pin ??
 
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