ProSoundWeb Community

Please login or register.

Login with username, password and session length
Advanced search  

Pages: 1 [2]  All   Go Down

Author Topic: Another Power Strip Fail  (Read 2396 times)

Daniel Levi

  • Full Member
  • ***
  • Offline Offline
  • Posts: 156
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.
Logged

Jerome Malsack

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1158
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
Logged

Brian Jojade

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1247
    • HappyMac Digital Electronics
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.
Logged
Brian Jojade

Tim Padrick

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 897
  • Indianapolis
    • T.P. Audio
Re: Another Power Strip Fail
« Reply #13 on: May 23, 2017, 02:12:09 am »

I think it's an Australian plug.
Logged

Mike Sokol

  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 3071
  • Lead instructor for the No~Shock~Zone
    • No~Shock~Zone Electrical Safety
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.
Logged
Mike Sokol
mike@noshockzone.org
www.NoShockZone.org

Stephen Kirby

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 2527
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.
Logged

Daniel Levi

  • Full Member
  • ***
  • Offline Offline
  • Posts: 156
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
Logged

John Roberts {JR}

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 15672
  • Hickory, Mississippi, USA
    • Resotune
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
Logged
On the internet people tell you everything "they" know, not the answer to "your" question.
Pages: 1 [2]  All   Go Up
 


Page created in 0.026 seconds with 19 queries.