I just re-discovered Antek. They make toroidal transformers for CNC and high-end audio. They also make unregulated DC power supplies using these transformers.
If you need 5.6 amps at about 80 volts DC one of these will work https://www.antekinc.com/ps-5n84-500w-84v-power-supply/ Note that it is rated for continuous 5.9 amps even with 50 Hz mains. This DC supply costs about $120 but for about $60 you could buy an AC transformer with the same power rating. (I've just answered my own question) I used to use this company's products when I was into tube-based audio. It is a US based company and they are easy to deal with. They also make much larger power supplies. It took me a while to "change gears" from audio to machine tools but both need big DC power. On Mon, Jun 8, 2020 at 1:44 PM R C <cjv...@gmail.com> wrote: > I have one that does both, for a larger stepper motor. > > It can take a bit of effort to find a DC PSU that can actually provide > 5.5A the motor can 'pull', it's a lot easier > > to get a transformer for one (my driver is 48VAC-80VAC OR 24VDC-110VDC) > > Jus a transformer will provide the amps your 'pulling' and of course > without any measures, spikes etc can happen. A switching > > power supply has bit of protection there. I think the driver probably > has some simple rectifier in it, I would expect much there. > > > > > On 6/8/20 2:05 PM, Chris Albertson wrote: > > Some of the larger size Stepper motor drivers will use AC input power. > I > > assume all that is needed is a transformer that is rated for the required > > current (and a fuse.) > > > > Most people are using these Meanwell-style switching power supplies but > it > > seems AC power might be better > > > > Questions > > Is there is the best type of transformer? Is there a good supplier? > > What about back EMF? Not knowing how the driver works I wonder what > > happens when the motor is breaking. Can there be an overvoltage problem? > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
