On Sun, 2009-04-12 at 22:52 -0500, Jon Elson wrote: > Kirk Wallace wrote: > > For this relay: > > > > http://document.sharpsma.com/files/s108t01_e.pdf > > > > what does "Non-zero crossing functionary" mean? > > > Some SSRs are designed to ONLY turn on at the zero crossing of the AC > voltage. > The others are usually called "random turn-on", meaning that they turn > on whenever the control signal is applied. > If you want to control a load by phase control, like a light dimmer, > then this is necessary. I think that is what the above Chinglish is > trying to convey in your quote. > > All SCR and Triac SSRs turn off at the current zero-crossing of the AC > cycle. > > > Jon
Thanks Steve and Jon. I also found this link from wikipedia: http://www.allaboutcircuits.com/vol_3/chpt_7/5.html but I suspect the AC SSR's are a little more complicated. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
