On Tuesday, March 27, 2012 12:13:45 PM Peter Georgi did opine: > Hi Gene, > > I'm using the same drivers and found a data sheet from > www.motioncontrolproducts.com . The type their is MDS542-V2.0. It's the > same but tree times more expensive then the China version. You find > their also a specification for the resistors when you are using 12V or > even 24V. > > As long as you keep the current of the LED below 30mA you are on the > save side. Though, I didn't worry to much, when I built my electronics > for the stepper together, about the current and voltage as I was using > 5V. > I did some testing this morning & found, on the driver I was testing, that straight 5.29 volts gave in the mid 14 ma range. These claim a 16 ma limit, I assume steady state. A 120 ohm additional series R gave 9.77 ma. So I suspect I can skip the limiters. The 16 dollar question of course is what is the drop of that meter when its in the 19.99 ma range.
> Hoping to be helpful. Its all helpful, thanks Peter. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> I just heard the SEVENTIES were over!! And I was just getting in touch with my LEISURE SUIT!! ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
