> I have a problem with the generic recommendation of optocouplers. > > They are appropriate where the two circuits are isolated. If however, >you are using them with one common line to both input and output as I >have seen in some suggestions, as a glorified transistor, then you have >misunderstood the problem and are bound to be disappointed. > > There are other, more effective ways to slow down the response of a >circuit! Paul - can you explain your answer for the non EE's amongst us? Annie