On Wednesday 21 December 2016 18:05:03 Klemen Živkovič wrote: > Find one on ebay: > > http://m.ebay.com/itm/AC12V80VA-Power-Transformer-12V80VA-isolation-to >roidal-transformer-Audio-sound-/182389553479?nav=SEARCH&varId=484960086 >380 > Thats a monstrous price for that rating. You ought to, with carefull shopping, be able get something with the full rating you need, and get it in a universal voltage range input (90-250vac) for around a hundred USD, and a total weight of half a pound because its a switch mode supply.
> But seems to me I need additional components like gretz and > capacitors. I belive it is challange on its own to build such DC power > supply. Any good sources for diy dc ps? Not many remain, highly efficient (85% or higher, often 90+%) switchers have largely replaced the old iron monsters that ran hotter than needed to keep your coffee warm, analog transformer power supplies. They may not last 40 years, tired capacitors the usual failure trigger, but if you replace the caps at 4-6 year intervals, you've saved at least the cost of the caps over that time frame in electricity not converted to wasted heat. > > On 20 Dec 2016 5:35 p.m., "Jon Elson" <[email protected]> wrote: > > On 12/20/2016 04:15 AM, Klemen Živkovič wrote: > > Maybe not related to this but am I seeing correctly that you are > > using > > 126V > > > 6A DC current? I am looking for 220V AC to 80V 8A DC transformer. > > Where > > can > > > I buy it? > > At least, in the US, there are things called "step down > transformers" to give lower voltage single-phase power to > the control equipment on larger machines. Typically, in the > US, these have 480/240 V primary windings and 240/120 V > secondary windings, selectable by moving some straps. By > setting the straps right, you can get rated current at half > voltage (and half power), so you can get 60 V AC (instead of > 120 VAC). 60 V AC X 1.414 will give about 84 V DC. These > transformers are often found at scrap yards for the scrap > price. Likely, you can find similar units wherever you are. > > Jon > > ------------------------------------------------------------ > ------------------ > Developer Access Program for Intel Xeon Phi Processors > Access to Intel Xeon Phi processor-based developer platforms. > With one year of Intel Parallel Studio XE. > Training and support from Colfax. > Order your platform today.http://sdm.link/intel > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ---------------------------------------------------------------------- >-------- Developer Access Program for Intel Xeon Phi Processors > Access to Intel Xeon Phi processor-based developer platforms. > With one year of Intel Parallel Studio XE. > Training and support from Colfax. > Order your platform today.http://sdm.link/intel > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today.http://sdm.link/intel _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
