Sunday, October 30, 2016
Arduino Uninterruptible Power Supply (UPS) Improved
A reader left a comment on my UPS post, he asked me to share the ‘improved’ design.
I would not really categorise it as an ‘improved’ design because I simply removed the P-MOSFET.
I also added a switch when they would not want the Arduino to be powered on.
The UPS was meant to power up an Arduino Nano, from USB or a Li-Ion Battery.
I hope this blogpost will be helpful for anyone doing a small UPS for Arduino. Cheers
![](http://3.bp.blogspot.com/-2lmxRmPsSUQ/UfIZgy9hbiI/AAAAAAAACL0/xWtH4x5mqSU/s1600/DSC02873-1.jpg)
Author: Chan HJ
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