Hello everybody! I'm doing a project using a DC motor, and I'm controlling it's speed with a PWM.
My DC Motor runs up to 12V, and is also a geared motor.
If I apply 12V to the engine it runs very well, but when I decrease the voltage to less than 7,5V the engine just don't move!
Would it be because of the rotor's inercia? Could it be because of the friction generated by the gearbox (maybe bad lubrication)? Is there a way to make the motor run in a low speed (something like in 1V or 2V)?
Unfortunatelly I don't have any other information about the motor since it's not mine, and the owner doesn't even know the brand of it... =/
Thanks everyone! =)