Jump to content
Electronics-Lab.com Community

non stepper motor controlling bridge problem


reko
 Share

Recommended Posts

Hey everyone well Audio Guru u helped alot in the sensors topic i would like to ask again for help on a certain subject i found all of u guys making a hell of a discusion about well

I was planning on controlling a dc motor with brushes and commutator to work with atmel at89c2051 mcu (Using pulse width modulation) well i got everything from the tutorial u linked here about the pwg through a bridge to control motor and btw the code there is simple i am a computer science student so i know about it the problem here is that i planned to use the l293d which is equipped with spike-protecting diodes and rated 600 mA per channel but the only bridge i managed to get is a l293B which isn't equipped with the diode and also rated 1A per channel that could be a problem so my question is (Is it possible to use that bridge with a dc non-stepper motor or what?)

P.S:Audio guru u really helped last time i hope u do this time :)

Link to comment
Share on other sites


the only bridge i managed to get is a l293B which isn't equipped with the diode and also rated 1A per channel that could be a problem so my question is (Is it possible to use that bridge with a dc non-stepper motor or what?

Its datasheet shows where to connect external diodes and how it is used with DC motors having brushes and a commutator.
If your motor draws more than 1A when starting, working hard or is stalled, then the IC will make lots of smoke.
Link to comment
Share on other sites

Search Results

L293B and L293E
http://www.st.com/stonline/books/pdf/docs/1328.pdf


L293D
ST Datasheet
http://www.st.com/stonline/books/pdf/docs/1330.pdf

TI Datasheet
http://focus.ti.com/lit/ds/symlink/l293d.pdf

App Notes
http://msgroups.tech.northwestern.edu/dc/dc99/docs/l293eapp1.pdf
http://www.st.com/stonline/products/literature/an/1675.pdf


Other Info
http://www.cse.cuhk.edu.hk/~khwong/ceg3430/mrobot7.pdf

http://www.dprg.org/projects/1998-04a/

http://www.seattlerobotics.org/encoder/may98/steppers.html

http://www.cs.uiowa.edu/~jones/step/circuits.html

http://www.stanford.edu/~pjc30943/school/ME218%20labs/KrisPaulSal%20-%20Lab%208%20Report.doc

http://www.me.umn.edu/courses/me2011/robot/technotes/L293/L293.html

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
  • Create New...