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?

  • \$\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
  • 1
    \$\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

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.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.