Otii Arc voltage drop powering GSM

Hi all,
I’ve a new Otii Arc and I’m trying to profile a device with a GSM module, powered with a LiSoCl2+supercap battery.

The Arc it’s powered with a programmagle power DC power supply (SPD3303X-E) at 9V@3A.

I’m trying to evaluate the power consumption of the GSM module; if I power with the battery no problems, if I use the Arc I get a voltage drop and the device reset.

Any suggestions?


Hi Luigi, welcome to the forum!

For being a power supply, Otii Arc has a very low output capacitance so you might want to add some extra capacitance as close as possible to your device.
That should solve this issue.

Best regards,

Hi Björn,
the trick was useful.

Best regards