Author Topic: Capacitor Values To Reduce Electrical Noise?  (Read 1099 times)

0 Members and 1 Guest are viewing this topic.

Offline SylvestreTopic starter

  • Robot Overlord
  • ****
  • Posts: 171
  • Helpful? 12
Capacitor Values To Reduce Electrical Noise?
« on: October 11, 2011, 06:27:18 PM »
Hey guys,

I have two motors that require 18 amps.  I am using a Sabertooth 2x25 motor driver to control these motors and have a 24 volt 55 AH.  Can I just use three 0.1 uF to reduce the noise?  If not, what should I use?  I am using these motors  http://www.monsterscooterparts.com/24v-350w-motor-11-tooth-25-chain-my1016.html
Logged

Offline newInRobotics

  • Supreme Robot
  • *****
  • Posts: 970
  • Helpful? 45
  • N.I.R.
Re: Capacitor Values To Reduce Electrical Noise?
« Reply #1 on: October 12, 2011, 03:19:00 AM »
Logged
"Computer games don't affect kids; I mean if Pac-Man affected us as kids, we'd all be running around in darkened rooms, munching magic pills and listening to repetitive electronic music." - Kristian W

Offline SylvestreTopic starter

  • Robot Overlord
  • ****
  • Posts: 171
  • Helpful? 12
Re: Capacitor Values To Reduce Electrical Noise?
« Reply #2 on: October 12, 2011, 12:26:46 PM »
I have looked at this and it didn't really give me what I was looking for.  Can I use 0.1 uF capacitors or will I need capacitors of higher value?
Logged

Offline newInRobotics

  • Supreme Robot
  • *****
  • Posts: 970
  • Helpful? 45
  • N.I.R.
Re: Capacitor Values To Reduce Electrical Noise?
« Reply #3 on: October 12, 2011, 01:34:18 PM »
By the way, isn't Sabertooth 2x25 a regenerative driver? If so, it already has two large caps to absorb spikes and compensate voltage drops. You can also add 100nF cap between motor terminals to fully filter out high frequency noise. Also, as suggested by Soeren in the before mentioned post, motor housing should be grounded by low impedance path and both terminal connected to it via 100nF cap.
Logged
"Computer games don't affect kids; I mean if Pac-Man affected us as kids, we'd all be running around in darkened rooms, munching magic pills and listening to repetitive electronic music." - Kristian W

Offline SylvestreTopic starter

  • Robot Overlord
  • ****
  • Posts: 171
  • Helpful? 12
Re: Capacitor Values To Reduce Electrical Noise?
« Reply #4 on: October 12, 2011, 04:30:52 PM »
Ok thank you.  Yeah I thought this was protected by the Sabertooth.  I just wanted to make sure.  Thanks for your help!  :)
Logged
 

Related Topics

  Subject / Started by Replies Last post
15 Replies
3790 Views 		Last post December 05, 2007, 12:06:47 PM
by bens
1 Replies
1504 Views 		Last post January 10, 2008, 10:32:20 AM
by Admin
8 Replies
1898 Views 		Last post May 02, 2011, 09:37:26 AM
by waltr
11 Replies
543 Views 		Last post December 26, 2012, 06:53:34 PM
by jwatte


Get Your Ad Here

data_list