Source for EIAJ barrel connector for Dell laptop?

You've done well to find those specs.

I'd say that's a fairly safe bet. Of course, they'd argue that it is to protect against all sorts of random/inappropriate supplies being connected to your Dell product.

If you turn one up, do let the group know.

As an aside, the earlier (non-concentric) style were even more proprietary - if that's possible.

protect

Dell

proprietary - if

I could not even confirm , off the web, including the service manual from support.dell , whether the centre pin of an Inspiron 7000 DC connector was + or - relative to the ground.

With most laptops, it's quickest & easiest to simply use a meter to see which contact in the socket is shorted to the chassis.

hard-

to

your

from

was +

But that does not tell you the polarity. After more than 1/2 hour fruitlessly hunting the web, decided to hook up to a current limited supply and monitor the voltage at the pins of the connector. If draws current and voltage is high then the right way round. Incidently pin positive wrt the ground/outer barrel for the Inspiron 7000. Perhaps in the States you only have to state the volts and currents and just a DC symbol at the socket, not the "C and dot" polarity designation

-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on

...

is

ind

rd

dita delenda est

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I didn't mention polarity in my original post, because I didn't think of it as relevant to finding a replacement jack. I assumed that you just mentioned the inability to find this information online as an aside - however if *you* need that information for something you're doing, I'll be glad to look at the A/C adapter and report back my findings...

Of course it does. I've never yet seen (out of many hundreds of laptops) one in which the ground connection don't go to the chassis. All you have to do is continuity-test between the SVGA shield (for example) & the power socket.

I'm not in the States. ;^) Some machines have the C dot symbol, some don't. And BTW, some put that symbol on the nameplate, rather than next to the socket.

Bob Larter Inscribed thus:

I agree ! I've never seen one either.

I've also seen that information on the name/rating plate. Not a very obvious place I agree.

them...

find

weird

supply

and

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I'm not familiar with laptops, the Dell was the second one I've ever looked at, so I tread gingerly

Outer dia.: 6.5mm Inner dia.: 4.4mm Pin dia.: 0.7mm Barrel length: 9.5mm

This is almost the same as EIAJ-05, but with different center pin diameter. My guess is that Dell chose a non-standard or otherwise hard- to-find size so that users would have to buy new adapters from them... (?)

Anyway, I've looked on Mouser and Googled in general, but I can't find this particular size.

Does anyone know what this connector is called, or a source for weird sizes like this?

Thanks in advance.

Mr. INTJ San Diego, CA

Try Here?

Colin in Australia