On 21 March 2010 15:39, Paul Keeton <pkeet...@woh.rr.com> wrote: > Each VFD requires a minimum of 70ma to run. We had to put > a small phoenix contact amp on it to boost the analog signal to run all > three drives on that machine.
70mA is quite a lot, really. However there are op-amps that can handle that amount of current (and being op-amps are perfectly happy on a double-rail supply for +/-10V operation. http://docs-europe.origin.electrocomponents.com/webdocs/0024/0900766b80024697.pdf Would do the trick, it could probably be mounted in heat-shrink in the cable, though there are clearly neater ways. -- atp ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
