Tips & Techniques:Power adapter matching

joeq

If you don't have the wall wart that "came with" your unit and you want to know if a substitute adapter will work:

Match voltage requirement. Exceed current requirement.

thanks to Zemlin

rrichard63 · 9th March 2008

In addition to the same voltage and enough amperes of current, you also have to match polarity. If the piece of gear or its manual says "center negative", then the wall wart needs to say the same. Ditto for "center positive".

13th January 2008	#1
muziqfreek Gear addict Joined: Jan 2004 Location: UK Comments: 380 7 Reviews written	But Rule number one should be.... (With regard to Hard Drives) Always label which adaptor goes with which hard drive!!! I've not (touch wood) yet oversupplied an HD with too much juice... simply by putting a strip of white insulation tape and then giving it a letter; on the HD, the power lead end and one more on the block end.. Always avoids any confusion!!!

9th March 2008	#2
rrichard63 Gear interested Joined: Feb 2008 Comments: 18	Match polarity, too In addition to the same voltage and enough amperes of current, you also have to match polarity. If the piece of gear or its manual says "center negative", then the wall wart needs to say the same. Ditto for "center positive".

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