On 6 September 2011 17:36, Jon Elson <el...@pico-systems.com> wrote: > No, if you rectify the mains, the -V terminal will NOT be anywhere near > neutral. It will > essentially be floating near whichever mains terminal is currently more > negative than > the other. So, it will be swinging 120 times a second between neutral > and -170 V from > neutral, assuming this is on a US 240 V single-phase feed.
It's UK single phase, and neutral is only ever a few volts from earth. > Obviously you have full galvanic isolation between the power transistors > and the driving > circuits. I am trusting to cleverer folk than myself for that part. > Also, make sure the motor connections are very > well-made, The motor connector plugs cost more than the motors. They ought to be up to the job. http://sineco.3dcartstores.com/assets/images/PDFs/DataSheets/MB1CKN0600.pdf -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" ------------------------------------------------------------------------------ Special Offer -- Download ArcSight Logger for FREE! Finally, a world-class log management solution at an even better price-free! And you'll get a free "Love Thy Logs" t-shirt when you download Logger. Secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsisghtdev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
