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Old 02-21-14, 02:07 PM   #9
Daox
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I've been told this won't work at lower voltages (I looked into it while developing a lithium battery management system for my PHEV Prius kit a while back). Zener diodes do not work as well at low voltages as they do at higher voltages. Their transition from blocking to allowing current to flow is more gradual at lower voltages. At higher voltages (like 13V or so), its more like a switch, and that is what you want.
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