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Author Topic: Another Power Strip Fail  (Read 6812 times)

Daniel Levi

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Re: Another Power Strip Fail
« Reply #10 on: May 17, 2017, 11:11:25 AM »

I think it's U.K. 230 volt...

Don't think it's uk as our plugs don't have cables exiting from the rear (unless it's an adaptor and even that's rare).
Looks Australian to me.

But you do have to wonder what goes into someone's mind when the dream this stuff up.

And for holidays if the voltage is the same just get a multiplug extension lead (with a suitably rated mains flex) and replace the inlet plug with the destinations type (i.e. for UK -> France/Germany get a BS1363 extension remove the British plug an replace with a CEE7/7).
This is much better than a poorly made wobbly adaptor plug and you are more guaranteed of correct earthing, current capacity and that both the plug and outlets are correctly sized/fit properly.
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Jerome Malsack

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Re: Another Power Strip Fail
« Reply #11 on: May 18, 2017, 09:45:13 AM »

Yes just plug in a 100 volt Zener  like the phantom power for the DI or mic.s   using 9 or 12 volt zener.   Right ?

http://www.newark.com/solid-state/1n3340b/zener-diode-50w-100v-do-5/dp/10P4975?CMP=KNC-GUSA-GEN-KWL&mckv=|pcrid|190495156494|&gclid=CNGkvsXJ-dMCFQ94fgodHGgMmg
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Brian Jojade

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Re: Another Power Strip Fail
« Reply #12 on: May 22, 2017, 12:35:31 PM »

At least their using actual APPLE brand power supplies. Not those dangerous Chinese knock-offs...  :D

I wouldn't be too sure about that.  On Apple supplies, the apple logo is reverse embossed into the plastic, but is not colored differently than the white of the shell.  The one in the photo appears to have the apple logo painted on in grey.  To me, that screams Chinese knockoff.  Those are the ones that sell for $29 on Amazon instead of $79. The customer doesn't know the difference, until the supply blows up their computer, or the supply melts, both of which I've seen happen.
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Brian Jojade

Tim Padrick

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Re: Another Power Strip Fail
« Reply #13 on: May 23, 2017, 02:12:09 AM »

I think it's an Australian plug.
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Mike Sokol

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Re: Another Power Strip Fail
« Reply #14 on: May 23, 2017, 02:07:50 PM »

I wouldn't be too sure about that.  On Apple supplies, the apple logo is reverse embossed into the plastic, but is not colored differently than the white of the shell.  The one in the photo appears to have the apple logo painted on in grey.  To me, that screams Chinese knockoff.  Those are the ones that sell for $29 on Amazon instead of $79. The customer doesn't know the difference, until the supply blows up their computer, or the supply melts, both of which I've seen happen.

I sent this pic to my twin brother Joe, who works at Apple, for a determination of origin (and a good laugh). I'll let you know what Apple says.

Stephen Kirby

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Re: Another Power Strip Fail
« Reply #15 on: May 23, 2017, 06:34:37 PM »

I wouldn't be too sure about that.  On Apple supplies, the apple logo is reverse embossed into the plastic, but is not colored differently than the white of the shell.  The one in the photo appears to have the apple logo painted on in grey.  To me, that screams Chinese knockoff.  Those are the ones that sell for $29 on Amazon instead of $79. The customer doesn't know the difference, until the supply blows up their computer, or the supply melts, both of which I've seen happen.
Just curious, what failure mode would cause a power supply to "blow up" a computer or phone?  The power input lines have TVS for overvoltage and ESD isolation.  The systems have automatic switching to battery power if the right input isn't detected.

A supply not having sufficient current capability or shorting internally and "melting" I can see.  But nothing happens to the computer or phone it's connected to.
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Daniel Levi

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Re: Another Power Strip Fail
« Reply #16 on: May 24, 2017, 03:03:45 AM »

It's generally full mains or even rectified mains from where the mains input tracks are too close to the low voltage output or the transformer (if there is one, capacitive droppers have been seen I think) having insufficient insulation between the primary and secondary/feedback windings.

https://youtu.be/ioAq7PI1Uwg
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John Roberts {JR}

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Re: Another Power Strip Fail
« Reply #17 on: May 24, 2017, 10:11:08 AM »

Just curious, what failure mode would cause a power supply to "blow up" a computer or phone?  The power input lines have TVS for overvoltage and ESD isolation.  The systems have automatic switching to battery power if the right input isn't detected.

A supply not having sufficient current capability or shorting internally and "melting" I can see.  But nothing happens to the computer or phone it's connected to.
There was a well reported case about a chinese flight attendant who plugged her iphone into a counterfeit charger and read her emails in the bath... last bath she ever took.

Apple swapped out counterfeit chargers with real ones over there just to save a few lives.

JR
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Re: Another Power Strip Fail
« Reply #17 on: May 24, 2017, 10:11:08 AM »


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