Random power offs

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

I am getting random power offs my AC adapter is 5V 5 Amps ? its very frustrating

2

Hi kerron.manwaring,

Not sure if that’s caused by USB cable quality, some USB cables can lead to additional voltage drop, have you tried with another one?
Please find more information from: [url]https://devtalk.nvidia.com/default/topic/1048640/jetson-nano/power-supply-considerations-for-jetson-nano-developer-kit/[/url]

3

I soldered a 5.5V 1.5 F capacitor across the power supply. problem solved. Thanks

4

That’s actually surprising!
Most supercaps (1.5F counts as a supercap) have impedance of 20 Ohm or more. A 100 mA current surge would drop the voltage by 2V.
When stabilizing power, I’ve generally used 1000 uF / 25V capacitors with ESRs in the 1 Ohm range.

5

LOL yea it worked. The power supply is definitely bad a lot of fluctuations it was a temporary fix for a demo. We had to desolder it from an old project 10 minutes before the demo. it got us through. I already ordered another power supply.