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Author Topic: Arduino DC adapter- can I switch center pin - to center pin + ?  (Read 406 times)
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Hello,

I have an old DC adapter that is 9v, 500mA but has a negative middle pin.

Could I just cut the wires and reverse them? Would that create a 9v 500mA middle pin positive? Or... am I missing something?

Thank you

- Noob
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Yup, you can do this.
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Thank you
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