On Tuesday 20 November 2012 11:17:54 kqt4a...@gmail.com did opine: > Would y'all comment a bit power supplies, linear or switching > Pro's and con's > Do's and don't > I see a great many lower priced switching supplies > > Richard > It depends on the supply whether it can be used with steppers or not. Steppers can thrown some awful reverse current spikes back into a switcher, and if its overvoltage protection is too fast, or it doesn't have adequate output filter capacity to absorb that noise, they will do rather exasperating shutdowns on you.
They are cheaper and far more efficient, the upside, but I've found that you pay your money and test, and if it fails, put it on the shelf for a less demanding project. My mill is running on a 28 volt, 11 amp switcher I got from All Electronics, works great & was under a $30 bill. But I wanted something at about 40 volts for the lathe & wound up making an unregulated linear for 10% of the cost of a switcher at the time. Loaded up, its doing about 37 volts so I missed my target, but it gets the job done, moving the lathe at very good speeds. The linear runs hotter, but both are working well. 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! Thank god!! ... It's HENNY YOUNGMAN!! ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
