On Wednesday 12 June 2013 06:28:33 Steve Blackmore did opine: > On Tue, 11 Jun 2013 18:12:16 -0400, you wrote: > >Someone mentioned there being an RMS conversion as part of the existing > >PWM to analog conversion methods but don't recall who now, can someone > >suggest a link for reading that might get me some insight on this? > > I mentioned the problem was to do with RMS in the pulsed signal, or so I > recall in discussions on converting PWM to an analogue voltage. I think > it's more to do with the Time constant on RC circuits like the one used > on a lot of breakout boards. They do not give a linear response. Short > of a look up comparison table I don't think you'll ever get it linear. > Near enough should do anyway :) > > > Steve Blackmore
Thanks steve. Andy had mentioned lincurve.9 as a possible solution, but the version I save installed on this machine so I can run sims, doesn't have that module available. So I can't play what if using halrun. :( Problem is that I can type s60 thru s360 and pretty much get what was asked. From s400 on up, there is a huge positive curve. I have the tach set to display 1200 max at full scale. Entering s600 (gets about 770 revs, to pinning the tach at 1200 is around an s841 entry, a very large 'gain'. The new motors countershaft has a 3/1 stepdown, plus the gearing in the head, means that at 1200 indicated, the motor is about tapped out, about 6 grand. Thats a hell of a lot of well balanced cast iron flywheel, 6" in diameter, to be spinning that sort of rpms. And I'm looking at a storm headed my way they are saying we'll need to drag out our generators for. I've been trying to get a whole house, 18kw NG fired, but locally all they have is generac, junk. I want a kohler, better warranty, but no registered service people locally. So its not happening. One of the neighbors has a new generac, plenty big enough, but I drove past it during the last outage, and his overhead lights looked like they were running on 85 volts. My little 6kw, clipped onto the open main breaker isn't big enough to run the whole house AC, but the lights (100% ccfl) were fine. I wasn't impressed with the difference. 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> is up! My views <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> A penny saved is a penny taxed. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
