I have a Meanwel HDR-30-5 DIN Rail power supply for my Raspberry Pi 3+ Model B, but the power seems to be a bit unstable.
According to the [ur=http://www.mantech.co.za/datasheets/pro ... -SPEC.pdfl]datasheet,[/url] it can deliver 5.5V @ 3A, yet I'm seeing volt drops, down to about 4.7V. I have a DMM connected to the output of the PSU the whole time to measure it. The output from the PSU goes to the VIN PINS of the Pi.
While playing music from Youtube, I often see the yellow lightning bolt in the top right corner of the monitor, and it often reboots due to the power loss.
Why the DIN rain power supply? I use the Pi to monitor my inverter, house energy consumption and some DS18B20 temperature sensors in the garage. There isn't a power outlet in the DB board, where I mounted my Pi using a DIN rail case like this one
Does anyone know if it would help if I put a capacitor across the VIN pins to stabilize the voltage? If so, which one?