Hey guys, I'm kicking off a new project, a wireless power monitor. I've got most of the design done, but I'm having problems choosing an opto-isolator. In the past I've used the ADI ADUM 3400 but it's a surface mount part and for prototyping I'd really like to use a dip part. Any recommendations?
Details on the project can be found here: http://thecodebender.com
Plenty to look at here:-
Found a good one. But this has actually led me to a whole different world. I was thinking of things incorrectly haha. The otpo's are great for part of what I need them for but, I'm hitting a design wall. I need a way to limit the voltage/current that could make a run for my Arduino in the event of a failing component somewhere in this thing. Right now I'm most worried about the voltage sensing system I'm employing as the current sensors are essentially isolated by nature.
See http://thecodebender.com/journal/2009/4/27/preliminary-designs.html for my design. Any recommendations on getting those incoming lines from the voltage sensors isolated safely? I recognize fuses are a possibility but I was looking for something a bit more "leave it be" kinda solution. Just looking for possibilities.
You may look at this site as they used Avago Technologies HCPL-7520 linear optoisolator for both voltage and current sensing and isolated safely.
http://courses.cit.cornell.edu/ee476/FinalProjects/s2008/cj72_xg37/cj72_xg37/index.html