I need to build a circuit that, after receiving a relay input, provides a momentary dry contact closure. I will need to use parts that are readily available (from Radio Shack or equiv). I would also like to build a second circuit that provides a 30-second (rather than momentary) contact closure. I am unable to design these circuits myself, but can follow directions that don't assume anything but basic electronic knowledge on my part. I would very much appreciate any help I receive, and will be happy to let you know the outcome of the project.
Thanks very much