I have a query regarding replacing a NTC on a Meanwell dual output power supply. I managed to blow a stepper motor driver and the power supply last night (accidentally swapped a plug to a different stepper driver which turns out was wired differently), and my initial investigation on the power supply shows the NTC isn't allowing mains voltage through.
Unfortunately I have a several day wait for an exact replacement to be sent, and the local electronics store only have generic products labeled 'Epoxy Dip NTC Thermistor'.
I have two questions:
- assuming this is for inrush current limiting, will the different style (epoxy vs metal disk) impact the behaviour?
- If the different style will work, would there be an impact if a 5 ohm metal disk version is replaced with a 15 ohm epoxy dip?
I suspect if this goes badly it'll blow the NTC or other components on the board before the fuse melts, but I feel it would be a good idea to check with the hive mind to get an opinion from someone smarter than me.
I should add, the characteristics between the original (marked 5D-11) are very similar to the new/expoxy one - the biggest difference is the resistance.