On Saturday 23 July 2016 07:19:30 Erik Christiansen wrote: > On 23.07.16 06:01, Gene Heskett wrote: > > On Saturday 23 July 2016 04:03:24 Erik Christiansen wrote: > > > http://www.banggood.com/Low-ZVS-12-48V-20A-1000W-High-Frequency-In > > >duct ion-Heating-Machine-Module-p-1038472.html > > > > That looks like a cute little starter kit. But I searched thru all > > 680 of the power supplies they sell, looking for a suitable supply > > to run it with, and came up empty. So it looks like the PSU to run > > it will need to come from some place else, or a DIY project, and my > > junk box isn't that well equipt. > > The unused 48v battery charger at the back of my garage is about a 2.5 > foot cube, and packs around 65v & 20+ amps, cranked up. The freight to > your neck of the woods would be prohibitive, though. > > ... > > > > The supplied work coil appears to have an ID of 40mm, and height > > > of 50 mm, but point 5 prohibits a work cylinder of more than 1/3 > > > of the ID (i.e. 13.3 mm), to avoid overload and burnout. It could > > > just about suit your application, Gene. > > > > Yes I agree. But a 48-60 volt, 25+ amp supply for it does not appear > > to be available in their 150,000 products. That would appear to > > need its own 230 supply line breaker if it could be found. > > Even on fleabay, pickings are slim. If these have isolated output, > then two could perhaps be stacked for 1.2 kW @ 48v: (select > "600w-24v25a")
I've had stability problems in the one's I tried to stack. They would see surges and one or the other would do a shutdown. But up in the ceiling in the shop is a rack of 5 ea 48 volt 3.3 amps I got 5 of for $95 on a make an offer basis on fleabay, turned then down to 42 volts and paralleled them all with .5 ohm current share forceing r's into about 6300 uf, that will be the motor psu for my toy mill in due time, about the same time I put a 5i25 card in it so I can get some real rapids. I've fitted a good sized fan to blow on those since they are up in 100f+ temps in the summer with their overhead location. A project I started last fall but got too cold before I got done, maybe I can get it done if the heat ever gets reasonable this fall. I tend to say quit when the digital temp/humidity thing hanging on the bandsaw says 95+. And thats with an exhaust fan on a thermostat that may not have shut down in the night for several nights. The usual 18" attic fan, wall mounted with a blow open shutter. > http://www.ebay.com.au/itm/600W-DC-24V-48V-15A-Regulated-Switching-Pow >er-Supply-Driver-for-LED-Strip-Light-/201151183128?var=&hash=item2ed58b >7918:m:mBZLUStoF2DEKdHUlGuurvg > > A$84 is about US$63 ea. > > Here's one from USA, used but working, for US$150: > > http://www.ebay.com.au/itm/Tyco-Lineage-Power-QS853A-Power-Supply-PBP3 >AVUCAA-25A-48V-B-/331901066990?hash=item4d46d85eee:g:nZ8AAOSwBahVPnE5 > > There's another US$52 postage to here, but it'd have to be less to WV, > even if the last bit is uphill. Its uphill both ways Erik. ;-) These hills aren't "over there" they are right in your face hills, often steep enough you need rock climbing gear. I've some of that about 75 yards north. > As 48v/25A is only 1.2 kW, i.e. only 5A @ 240v, I'd be happy to plug > two of them into one double outlet here. Outlets are on 10A breakers > here. (15A for the welder circuit in the garage.) > > I think I'll wait till I have the 48v battery bank and solar array > that's on the to-do list. Then there's no issue with 48v power > supplies any more. > I'd have such a setup on my list too, but I'd never live to see the payback. > Erik > > ---------------------------------------------------------------------- >-------- What NetFlow Analyzer can do for you? Monitors network > bandwidth and traffic patterns at an interface-level. Reveals which > users, apps, and protocols are consuming the most bandwidth. Provides > multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make > informed decisions using capacity planning > reports.http://sdm.link/zohodev2dev > _______________________________________________ > 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> ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports.http://sdm.link/zohodev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
