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Xringer · 03-14-15, 12:59 PM

I actually didn't think of that until today.. It wasn't in the original design.
I was thinking an 8 or 10 volt zener might work, but I didn't have any..
And, I'm not sure if it's really needed, if you are careful with your PV voltage
and current flow in the voltage divider.

You would need to make sure that over-voltage current levels were
not so high as to exceed the wattage rating of the zener.
A 1 watt zener should be okay if you didn't use real low resistances in your voltage divider.

03-14-15, 12:59 PM	#143
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	I actually didn't think of that until today.. It wasn't in the original design. I was thinking an 8 or 10 volt zener might work, but I didn't have any.. And, I'm not sure if it's really needed, if you are careful with your PV voltage and current flow in the voltage divider. You would need to make sure that over-voltage current levels were not so high as to exceed the wattage rating of the zener. A 1 watt zener should be okay if you didn't use real low resistances in your voltage divider. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..