At 10:01 AM 11/2/02 -0500, you wrote: >Yes, as anyone who bothers to read data sheets would be aware. If it's funny >to ask the original poster a Q in order to gather information needed to >provide a useful, helpful reply....then it's also a bit funny thatI have >units in the field for over 15 years with original optos and no noticable >performance degradation. I guess it all depends on part selection and >application knowledge & experience. Yes, I agree with you. Optos are the best solution in many situations.. such as high voltage level shifting and dealing with severe noise of various kinds. As you say, reading the data sheets and *application notes* is the key to effectively using them. Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu