I know it’s the old round pin we used for phones back in the day but can someone send me a link to the exact one because I’m seeing too many round pin charges of different sizes. Also where do I go for tech help related questions like these? Is this the right community?

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7 points

If you know the lamp model number or manufacturer or anything like that you could possibly find the specs online somewhere. I think they also sell some “universal” type barrel plug power supplies that come with various sized barrel connectors.

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6 points
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Ah yes, you must mean the biblically accurate universal barrel plug adapter.

Edit: I had something like this guy growing up and used to use it to make sparks and other shenanigans.

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3 points

Edit: I had something like this guy growing up and used to use it to make sparks and other shenanigans.

What utter goofball was it who ever built a device with reversed polarity?

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3 points

Some Chinese devices come with reverse polarity.

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