LM317 with a zener to low cut off

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bend94

Joined Feb 15, 2016
17
hi,

i have a 12V DC power battery charged by a solar panel.
my regulator can deliver 12V DC output.

i used a LM317 with 2 resistor to provide 9V output for my arduino.
i would like to cut off the LM317 when input is under 10V

How to do this ?
Please provide a scheme

Regards
 
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