I think it is a good idea to have a resistor in series with Zener diodes on 48V side. Once you go above 27V+27V+LED voltage the current rises very quickly and the LED might get cooked. Happened to me....
Anyway good idea.
NASA's Orion Flight Software Production Systems Manager Darrel G. Raines joins Planet Analog Editor Steve Taranovich and Embedded.com Editor Max Maxfield to talk about embedded flight software used in Orion Spacecraft, part of NASA's Mars mission. Live radio show and live chat. Get your questions ready.
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