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amp output? laptop AC/DC adapters

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Name: Dragon306
Date: April 23, 2006 at 09:52:03 Pacific
OS: na
CPU/Ram: na
Product: na
Comment:

does the *.**a or ****ma on laptop power adapters refer to amps?

more to the point, does that number matter for functionality? for example, if i have an HP that wants a 19v 2.4a power adapter, wont a 19v 3.16a power adapter work still? isnt the only thing that effects is battery charge speed??

thanx

HP Vectra VL400
1.0ghz Pentium 3
512mb PC133 SDRAM
120gb 7200rpm 8mb cache WD1200JB hard drive
ATI Radeon 9200 128mb AGP video card



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Response Number 1
Name: street1
Date: April 23, 2006 at 10:24:14 Pacific
Reply:

The laptop batteries are designed to charge at a certain amperage.

Your idea wouuld probably work but,

overheat and add stress to the battery

designed to charge at 2.4amps.

This is not from a google search just seems practical.Someone will probably correct me.


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Response Number 2
Name: name
Date: April 23, 2006 at 10:25:57 Pacific
Reply:

The voltage

the type of voltage--AC or DC

the polarity at the connector + or -

must be the same

the AMERAGE (A) or milliamperage (ma) must be AT LEAST as large at the power supply as the laptop requires. There are internal regulators for the battery charger. A higher current ration will not hurt a thing.


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Response Number 3
Name: ham30
Date: April 23, 2006 at 10:40:46 Pacific
Reply:

I agree with Name. The laptop should have a circuit to charge the battery at the right rate.

Do yourself a favor BACKUP!
Sorry, I do not check for private messages


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Response Number 4
Name: street1
Date: April 23, 2006 at 10:59:07 Pacific
Reply:

Thank You :name and ham30.I enjoy learning new things.

The dragon beast should rest well
tonight.Right Brendan- LOL
Best to everyone.


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Response Number 5
Name: Mechanix2Go
Date: April 23, 2006 at 11:36:12 Pacific
Reply:

Well...

If the current regulator is in the power supply, you run the risk of ruining the battery with a non-standard replacement PS.


=====================================
If at first you don't succeed, you're about average.

M2Go



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Response Number 6
Name: JimPIM
Date: April 23, 2006 at 11:59:34 Pacific
Reply:

Hi, Equal to Amps/Milliamps or greater is always OK as long as the other specs are met. Jim


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Response Number 7
Name: Dragon306
Date: April 23, 2006 at 12:33:53 Pacific
Reply:

well it is an HP power adapter just not the one for that particular machine. came off a differant model omnibook.

thanx all.

HP Vectra VL400
1.0ghz Pentium 3
512mb PC133 SDRAM
120gb 7200rpm 8mb cache WD1200JB hard drive
ATI Radeon 9200 128mb AGP video card


0

Response Number 8
Name: name
Date: April 23, 2006 at 12:43:05 Pacific
Reply:

That's what I assumed you meant. There are additional regulators and circuitry in the laptop (and in the battery, on Thinkpads) that control charging.

Using OFF BRAND power supplies is indeed a dicey matter.


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Response Number 9
Name: XpUser
Date: April 23, 2006 at 13:32:31 Pacific
Reply:

Folks,

Dragon306 is certainly asking aq lot of quiz in anticipation of his going into business selling his "stock computers." Would you buy from him?

i_XpUser


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Response Number 10
Name: ham30
Date: April 23, 2006 at 14:25:55 Pacific
Reply:

I think I would wait a few years, XP. :-)

Do yourself a favor BACKUP!
Sorry, I do not check for private messages


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Response Number 11
Name: jboy
Date: April 23, 2006 at 14:30:37 Pacific
Reply:

"Would you buy from him?"

Heh - not in this lifetime - those neurons just aren't firing

We've heard that a million monkeys at a million keyboards could produce the complete works of Shakespeare; now, thanks to the Internet, we know that is not true


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Response Number 12
Name: street1
Date: April 23, 2006 at 14:32:07 Pacific
Reply:

No,but he will have plenty of economically strapped people who will.

I remember my first used car a 63 chevy impala for 30.00 dollars and a portable B&W TV I bought from an old lady in 66 when I was 15 years old.

Wait a minute hummm,never have had that good of a deal again in my life.

Now Dragon if you could just be an old lady
and sell cars who knows.


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Response Number 13
Name: street1
Date: April 23, 2006 at 14:38:13 Pacific
Reply:

I remember my first used car.

It was a 63 chevy impala it cost me 30.00 dollars and a portable B&W TV.

I bought the car from an old lady in 66 when I was 15 years old.


Sorry about the 3 mile sentence in response
12.

That is how I really talk.


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Response Number 14
Name: Derek
Date: April 23, 2006 at 15:09:21 Pacific
Reply:

The "a" is amps, the "ma" is milliamps (although they should have been written A and mA) - Mr Ampere might turn over in his grave.

There is often a misunderstanding about Amps. Amps are the current drawn by the load. Having a PS with a higher Amps rating does not somehow "force amps into a system" (as implied by #1). In this respect Dragon306 is correct. A PS with a higher amps rating is fine. If it is too low you could run into problems.


DerekW


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Response Number 15
Name: Mechanix2Go
Date: April 23, 2006 at 15:35:09 Pacific
Reply:

My first car was a 48 Chevy for $30 LOL.

For extra credit, what is the definition of an Ampere?


=====================================
If at first you don't succeed, you're about average.

M2Go



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Response Number 16
Name: Derek
Date: April 23, 2006 at 15:45:38 Pacific
Reply:

Err...does Googling still qualify for that extra credit?:

AMPERE

DerekW


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Response Number 17
Name: ham30
Date: April 23, 2006 at 16:02:04 Pacific
Reply:

I=E/R

I = amperes
E = voltage
R = resistance in ohms

Do yourself a favor BACKUP!
Sorry, I do not check for private messages


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Response Number 18
Name: Derek
Date: April 23, 2006 at 16:34:11 Pacific
Reply:

.... which in terms of my #14 means that you only draw more Amps from a PS by either increasing the applied voltage (overlocking maybe) or lowering the resistance of the load circuit (adding more gizzmo's to the load).

The Amps given on a PS refer to the maxmimum current you can draw from it (its capacity). It doesn't mean that a higher amperage PS will increase the current drawn by the load.

Sorry Street1 if I'm now kinda labouring the point.


DerekW


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Response Number 19
Name: name
Date: April 23, 2006 at 18:14:31 Pacific
Reply:

Another great comparison, since we are speaking in general of low voltage, is automotive systems. The auto battery can deliver hundreds and hundreds of peak amperes, but if you hook some little, piddly pilot lamp that only draws, say 250 ma---a quarter of an amp, then that's all it will draw.


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Response Number 20
Name: Derek
Date: April 23, 2006 at 18:21:05 Pacific
Reply:

Exactimo

DerekW


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Response Number 21
Name: street1
Date: April 23, 2006 at 19:12:35 Pacific
Reply:

Sorry Street1 if I'm now kinda labouring the point.

That's it we need a labour union!!!

I am really happy my electric bill is not based off my theory in response 1.

I have been corrected by the master{ jboy }
Derek I am now immune to small kicks and wounds.

corrective criticism is always best took at face value.

Dragon needs to learn that but, it will be fun as hell until he does.LOL


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Response Number 22
Name: Derek
Date: April 23, 2006 at 20:02:51 Pacific
Reply:

Street1

No kicks intended. Just that subsequent posts kept hitting my "go" button again. You know, putting it another way blah blah.

DerekW


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Response Number 23
Name: Mechanix2Go
Date: April 23, 2006 at 20:08:42 Pacific
Reply:

Hi Derek,

Well, it's a good thing I checked the Wiki link.

I thought I remembered a coulomb as 6X10^28

It's 6X10^18

But hey, what's a factor of 10^10 among friends.


=====================================
If at first you don't succeed, you're about average.

M2Go



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Response Number 24
Name: street1
Date: April 23, 2006 at 20:37:20 Pacific
Reply:

No problem Derek I understand where you were at.

I stay there=Blah Blah Blah Blah Blah LOL


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Response Number 25
Name: SkipCox
Date: April 23, 2006 at 21:15:19 Pacific
Reply:

How the heck did I drift into this thread???

Response 14, 17, 18, and 19 all win the weekly Sunday dandy answer prize from me. Y'all get a good used P133 processor.

Just toss yur mailing addresses toward skip@skipcox.net

Hoorah!

Skip


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Response Number 26
Name: Derek
Date: April 24, 2006 at 07:46:45 Pacific
Reply:

SkipCox

As I'm one of the contenders, will it fit my 486 upstairs? Also have you a large HD, such as 500M? That 270M HD is now over half full.

DerekW


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