Hey there,
I am using an N channel power mosfet (IRFZ44N) to control power to a high current motor with atmega8.
I've connected atmega 8 I/O pin to gate, one motor terminal to source and other to +ve power and drain of mosfet as well as atmega8 ground to a common ground.
Circuit diagram attached
It seems correct but there are certain wierd problems as follows:
1.For gate voltage 5v there is very little current from drain while for 12v at gate current is very high!
2.The mosfet sometimes turns itself on without any gate voltage applied
3.When gate voltage is set to 0 from some +ve voltage it sometimes take time (5-8 sec) for drain current to become 0
How can I solve the above Problems?
I am using an N channel power mosfet (IRFZ44N) to control power to a high current motor with atmega8.
I've connected atmega 8 I/O pin to gate, one motor terminal to source and other to +ve power and drain of mosfet as well as atmega8 ground to a common ground.
Circuit diagram attached
It seems correct but there are certain wierd problems as follows:
1.For gate voltage 5v there is very little current from drain while for 12v at gate current is very high!
2.The mosfet sometimes turns itself on without any gate voltage applied
3.When gate voltage is set to 0 from some +ve voltage it sometimes take time (5-8 sec) for drain current to become 0
How can I solve the above Problems?
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