Electronics (alt.electronics)

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Posted to alt.electronics,sci.electronics
external usenet poster
 
Posts: 109
Default Can't determine laptop polarity - HELP!


I have a Gateway T-6815 laptop. The power brick was lost a while ago. I now
have a generic laptop power brick.

I cannot determine the polarity that the laptop needs? There is no tip/ring
diagram. All that it has is:
____
19v ----- 3.42 A (thats a solid line over a dashed line)

So... does that tell me anything? Is it possible that the laptop doesn't
care about the polarity?

  #2   Report Post  
Posted to alt.electronics,sci.electronics
external usenet poster
 
Posts: 2,022
Default Can't determine laptop polarity - HELP!

On Fri, 2 Jan 2009 22:32:50 -0700, "Calab" wrote:


I have a Gateway T-6815 laptop. The power brick was lost a while ago. I now
have a generic laptop power brick.

I cannot determine the polarity that the laptop needs? There is no tip/ring
diagram. All that it has is:
____
19v ----- 3.42 A (thats a solid line over a dashed line)

So... does that tell me anything? Is it possible that the laptop doesn't
care about the polarity?


---
http://support.gateway.com/support/a...x?cmpid=topnav

JF
  #3   Report Post  
Posted to alt.electronics,sci.electronics
external usenet poster
 
Posts: 53
Default Can't determine laptop polarity - HELP!

On Fri, 02 Jan 2009 22:32:50 -0700, Calab wrote:


I have a Gateway T-6815 laptop. The power brick was lost a while ago. I
now have a generic laptop power brick.

I cannot determine the polarity that the laptop needs? There is no
tip/ring diagram. All that it has is:
____
19v ----- 3.42 A (thats a solid line over a dashed line)

So... does that tell me anything? Is it possible that the laptop doesn't
care about the polarity?



It is very defiantly polarity sensitive don't try to use just any
connection polarity or you will damage it.

Your best bet is to go to Ebay and look for one. I just looked
and there are many for sale from $10-20 new and used. Buying a
universal supply from a regular supplier would cost much more and using a
general purpose wall wart will not work since the supply is a switching
type and the computer is very sensitive to noise in the power supply.


Gnack
  #4   Report Post  
Posted to alt.electronics,sci.electronics
external usenet poster
 
Posts: 1
Default Can't determine laptop polarity - HELP!

Calab skrev:

I have a Gateway T-6815 laptop. The power brick was lost a while ago. I
now have a generic laptop power brick.

I cannot determine the polarity that the laptop needs? There is no
tip/ring diagram. All that it has is:
____
19v ----- 3.42 A (thats a solid line over a dashed line)

So... does that tell me anything? Is it possible that the laptop doesn't
care about the polarity?


Take a multimeter, and put it on continuity reading, and then measure
inside the DC plug receptacle between the tip and ring, to an grounded
point on the laptop. The screws for the ports (VGA, DVI, Printer etc.)
is all ground.

I'll bet you that center is positive and the ring is negative, i have
never seen a laptop with the polarities crossed yet.

// Per.
Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Charging a laptop battery without the laptop? martin_pentreath@hotmail.com Electronics Repair 20 December 10th 08 06:59 PM
Trying to determine whether refrigerator is okay or not. James[_17_] Home Repair 4 October 19th 08 03:14 AM
What Do I Ask To Determine Quality? aeden.jameson@gmail.com Woodworking 36 May 22nd 07 04:41 AM
New Laptop Technology You Need To Know (Before Buying Your Next Laptop) Sophi Electronics Repair 0 April 5th 07 01:35 PM
Floppy Drive from one Laptop into Another Laptop Brad Electronics Repair 6 September 15th 06 11:51 AM


All times are GMT +1. The time now is 03:57 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"