Go Down

Topic: Speed down DC motor (Read 380 times) previous topic - next topic

suqidan

So here is the problem, i am running a 12v DC motor which draws 30A maxium at its spike... and it's running 4000rpm now.
We have already used a 1:4 gear set to speed it down. now the hardware part is set. So i am wondering if there are any way i
could speed it down digitally, i tried to use Mosfet, but it got really hot some time. Any one has any ideas? Thanks!!!


ash901226

theres lots of way you could slow down a motor
hardware and software

hardware= gearing, belting, and using chain essentially converting speed to torque or vice versa
software= you could use a resistor to reduce the current to the motor, use a lower voltage or using a PWM. PWM is the kind that u get from analogWrite.

jackrae

If your mosfet is getting hot you need to answer following ;
a) are you feeding it with PWM signal
b) is PWM signal turning mosfet hard on (ie is it suitable for a 3 volt signal)
c) is your heatsink correctly sized

A PWM signal should control speed from 0% RPM to 100% RPM with no problems provided mosfet is correctly driven

Go Up
 


Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy