Products > Test Equipment
Problem power supply Long Wey PS-K3010DF
AlCarlos:
Hello everyone
I take advantage of my new subscription to your site to inform you that I have a problem with my 10Ampere Long Wey PS-K3010DF power supplying a LW-K305D-1 motherboard that is similar to the 5 Amp power supply K305D.
The problem with my Long Wey PS-K3010DF is that it stays fixed at 11 ampere maximum and turning the non-adjusting pot always stays at 11 ampere.
Can anyone help me to solve this problem? I do not even know where to begin with.
Thanks to who solves the problem
nvmR:
Welcome to the forum. What happens when the load is disconnected?
AlCarlos:
Thanks. The current goes to zero ampere.
nvmR:
try to use a simple resistor as a load, and see if it behaves ok. You can cut it off some junk pcb.
Try to characterize it under ohms law: I = V/R.
See if at some voltage level, your supply starts failing. If not, get some ceramic resistors with a high wattage, and repeat. If all is ok, then your first load is probably a short, or very low resistance.
AlCarlos:
Thanks for helping me. I'm going to look for a power resistor and make the suggested measurements.
I used a 12V/35W automotive lamp and got the following results:
12V - 2.54A
6V - 1.74A
3V -1.21A
What do you think?
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