Hi, all,
I have a question whether I can use PWM to drive 12V DC motors with 24V battery power supply as in the case of robot with H-bridge. An example would be a car windshield wiper or power window motor types which are normally operated at 12v. I searched for similar discussions and found one interesting statement by Pedant Engineer: "So if you wanted to run a 12V motor from 24V just keep the PWM duty cycle below 50% and you are good to go. Be careful though not to push this too hard." from https://forum.allaboutcircuits.com/...wer-supplies-good-for-powering-motors.167365/
This sounds like the answer to my question but I want to check to see whether anyone has tried this in practice. There are real good reasons why a 24V DC power is more desirable. For one thing, it works better for the MOSFETs so the gate voltage doesn't easily drop below 10v. I have both 24v and 12v motors so it would be nice to keep just one power source at the same voltage.
Any comments would be greatly appreciated.
Thanks.
I have a question whether I can use PWM to drive 12V DC motors with 24V battery power supply as in the case of robot with H-bridge. An example would be a car windshield wiper or power window motor types which are normally operated at 12v. I searched for similar discussions and found one interesting statement by Pedant Engineer: "So if you wanted to run a 12V motor from 24V just keep the PWM duty cycle below 50% and you are good to go. Be careful though not to push this too hard." from https://forum.allaboutcircuits.com/...wer-supplies-good-for-powering-motors.167365/
This sounds like the answer to my question but I want to check to see whether anyone has tried this in practice. There are real good reasons why a 24V DC power is more desirable. For one thing, it works better for the MOSFETs so the gate voltage doesn't easily drop below 10v. I have both 24v and 12v motors so it would be nice to keep just one power source at the same voltage.
Any comments would be greatly appreciated.
Thanks.