Forum Discussion
billhorvath
4 years agoNewbie
Do these all have center-positive polarity?
- maxproandu4 years agoStreaming Star
Indeed.
Technically, if the center pin is negative in the barrel is positive, the voltage should have a negative sign in front of it. But sadly enough, these power supply manufacturers could care less about any documentation of the barrel connector.
We've been surprised that over the years somebody like UL hasn't forced barrel size, configuration, and polarity as part of the listing on the label. Our guys on the inside state that it's because nobody has settled on a single standard for barrel connectors.
Regardless, Roku uses a grounded barrel connector with the center pin being live.
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