That's too easy. Thanks, Kirk On Fri, 2007-06-22 at 14:59 -0500, Javid Butler wrote: > What kind of questions do you have? It's pretty straightforward. Most of > them have internal current limiting so you can drive them directly from a > digital output. Measure your drive current to make sure you do not exceed > the output of your 240's, but most of SSRs only need a few mA. It's a little > better to common on the + side and pull the - input to the SSR low than to > common the - side and drive the + input, because that usually means less > heat generated in your driver. > > I've been driving SSRs directly from output ports of PIC processors for > years in a variable phase angle trigger for dimmers. If you use a > zero-crossing SSR you don't even have to worry about sync to the line. > > Javid > > > ----- Original Message ----- > From: "Kirk Wallace" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Friday, June 22, 2007 2:30 PM > Subject: [Emc-users] Driving SSR's > > > >I am planning on using 74C240's at 12 Volts between a parallel port and > > my SSR's. Anyone have thoughts on driving SSR's? > > > > Kirk Wallace > > > > > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by DB2 Express > > Download DB2 Express C - the FREE version of DB2 express and take > > control of your XML. No limits. Just data. Click to get it now. > > http://sourceforge.net/powerbar/db2/ > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users >
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