I have a Mean Well Switching power supply 5V. I have connected 5V output to rpi's 3b+ gpio pins to power it up, but the supply is just going up/down like it has no power drain. can you recommend how to make it hold the voltage?
thanks
I have a Mean Well Switching power supply 5V. I have connected 5V output to rpi's 3b+ gpio pins to power it up, but the supply is just going up/down like it has no power drain. can you recommend how to make it hold the voltage?
thanks
The Meanwell RD-125A power supply that you are using implements a feature called "Hiccup Mode" which is triggered when the load on the primary channel is too low. So this is expected behaviour.
Somebody on Amazon worked around this by adding a resistor as a dummy load, and wrote it up in their review, but this doesn't seem like a great idea to me.
I'd use a different power supply, or use a buck converter from the stable 12V supply (if it is stable, and not also resetting when hiccup mode kicks in) to get 5V for the Pi.