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From: Kathy on 13 Apr 2010 01:41


Thank you Barry for your help, I just noticed your reply.
Big help

Kathy


===========================================
"Observer" <none(a)none.com> wrote in message
news:u5jvr593p4om37ofamj06pfabaob1hfabu(a)4ax.com...
> On Thu, 08 Apr 2010 23:01:22 -0400, Barry Watzman
> <WatzmanNOSPAM(a)neo.rr.com> wrote:
>
>>First, Watts = Volts x Amps
>>
>>So 19v x 3.95a is approximately 75 watts
>>
>>Almost all Toshiba laptops use either a 15 volt or a 19 volt AC adapter,
>>and almost all of the 15 volt laptops have one connector while almost
>>all 19 volt Toshiba laptops have the same [but different from 15v]
>>connector. [There are a tiny handful of Toshiba laptops that violate
>>these general rules.]
>>
>>This makes Toshiba AC adapters very, very "generic", since Toshiba is so
>>large that there is plenty of market for generic suppliers to make them.
>>
>>As a consequence, you can buy a new generic (generally Chinese made)
>>adapter on E-Bay for under $15, including shipping.
>>
>>Note that current ratings are indeed the maximum that the adapter COULD
>>supply; the laptop only takes what it needs, up to that maximum. In
>>fact, laptops virtually never draw the maximum, and I often use the 3.42
>>amp (65 watt) adapters with laptops that are spec'd for the 3.95a
>>adapters. I have never had a problem doing this. I also often use 15
>>volt 4a adapters on laptops spec'd for 15v 5a, and, again, as a
>>practical matter, I've never had a problem.
>>
>>[Note that I am a degreed EE with over 30 years in the PC industry and
>>I've worked for laptop makers and repair them, and am A+ and Network+
>>and MCP among other certifications.]
>>
>>
>
>
> I like your credentials but as I recall on Dell's newsgroup. many
> found your posts either too theoretical or too out of date. That
> said, I think on this one, you got it right.


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