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So, long story short: I'll soon have a PCB which accepts 24v 5a power input and has a 4 pin power plug of this type:

4 pin power plug

And is wired like this:

4 pin wiring

My question is: assuming I have a generic AC/DC adapter with the correct voltage and amperage and I cut its plug, if I were to solder its wires on the 4 pin input of the PCB, would it be fine if I soldered the positive wire to both the positive pins and the negative one to both the negative pins? If not, what would be the correct approach?

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  • \$\begingroup\$ Assuming that those are all power pins (and you ohm them out properly, and solder them properly), then yes. \$\endgroup\$ – Voltage Spike Dec 8 '16 at 22:41
  • \$\begingroup\$ Yes, all of the four pins are indeed power pins. What exactly do you mean by "ohm them out properly"? \$\endgroup\$ – Wyse Dec 8 '16 at 22:58
  • \$\begingroup\$ @Wyse -- as in connect the correct wires to the correct pins \$\endgroup\$ – ThreePhaseEel Dec 8 '16 at 23:40
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    \$\begingroup\$ Just looking at the picture I would expect P2 and P4 to be different voltages... otherwise why bother with this arrangement? \$\endgroup\$ – Spoon Dec 9 '16 at 6:50
  • \$\begingroup\$ @Spoon That's what I thought, but I don't own the required power brick so I can't really test the voltages of each pin myself, I only know the total output voltage. I guess I should ask a seller for the voltages of each pin just to be sure. \$\endgroup\$ – Wyse Dec 9 '16 at 20:00
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Yes, that is exactly how it is done. As long as you meet the required specs and properly solder on to the wires, it should work.

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