Korawy
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Hi all,,
im using MOSFET to control speed of two motors, the drive is from pic18f452 ccp1 and ccp2 and through a driver circuit which is as fig:
The motors work perfectly when i type this in the software (using mikroc) : "PWM_CHANGE_DUTY(255);"
But when i change the duty cycle the motor doesnt work.
I think that the problem is in the transistors used in the driver circuit which are (2n3904,2n3906), But not sure.
The resistors that i use are:
Rgate= 330 ohm.
Rb= 120 ohm.
R=10 kohm.
These values are not determined in the datasheet where the figure is.
Hope to find help..
im using MOSFET to control speed of two motors, the drive is from pic18f452 ccp1 and ccp2 and through a driver circuit which is as fig:
The motors work perfectly when i type this in the software (using mikroc) : "PWM_CHANGE_DUTY(255);"
But when i change the duty cycle the motor doesnt work.
I think that the problem is in the transistors used in the driver circuit which are (2n3904,2n3906), But not sure.
The resistors that i use are:
Rgate= 330 ohm.
Rb= 120 ohm.
R=10 kohm.
These values are not determined in the datasheet where the figure is.
Hope to find help..