2012/1/12 andy pugh <bodge...@gmail.com>: > On 12 January 2012 15:27, andy pugh <bodge...@gmail.com> wrote: >>> Is it supposed to receive any additional 5V, 12V or something similar >>> for logic power? >> >> Yes, Vdd. > > On reflection, it might be wise to use a DC/DC convertor for Vdd, so > that it has a floating, isolated logic power, that can be safely > referenced to PSU gnd. >
And how much would such a convertor cost? I would need to convert 330VDC to 12VDC. Since I have to connect controller's GND to Vss, I could take +12V from PC PSU for logic power. But that introduces a risk of burning down a PC, if something happens in the chip, so I could sacrifice a PC PSU just for +12V supply to the logics of these chips. Viesturs ------------------------------------------------------------------------------ RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
