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Posted to alt.electronics,sci.electronics
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![]() 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
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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
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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
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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. |
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