can I interchange laptop power supplies ?

R

Ray Thomas

Guest
I have 2 laptops, each requiring 19 volts DC, centre pin on connecting plug
is + in both cases. One supply is rated at 3.42 A, the other is 4.22 A. Is
there any foreseeable damage that might occur if I interchange them....is it
true that the laptop will simply claim the current it requires from the
supply, so additional Amps will not be a problem (or vice versa in the case
of underpowering) ? The reason I'm doing this is that one laptop is silent
with regard to radiated RF noise and hash, whereas the other is plagued by
it, when I connect an external soundcard.
Thank you for advice,
Ray
 
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Ray Thomas wrote:
I have 2 laptops, each requiring 19 volts DC, centre pin on connecting plug
is + in both cases. One supply is rated at 3.42 A, the other is 4.22 A. Is
there any foreseeable damage that might occur if I interchange them....is it
true that the laptop will simply claim the current it requires from the
supply, so additional Amps will not be a problem (or vice versa in the case
of underpowering) ?
Click to expand...
The laptop will _draw_ the numer of amps it needs from its power supply.
The only danger is if the replacement power supply is rated to a _lower_
number of amps than the original - the laptop will draw too much power
from it and may overheat.

The reason I'm doing this is that one laptop is silent
with regard to radiated RF noise and hash, whereas the other is plagued by
it, when I connect an external soundcard.
Thank you for advice,
Ray
Click to expand...
I would think it would be okay to use the bigger supply if it fits =]


- --
Brendan Gillatt
brendan {at} brendangillatt {dot} co {dot} uk
http://www.brendangillatt.co.uk
PGP Key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBACD7433
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As posted, the larger current available will not be an issue, however going
the other direction; using a supply with lower than required current, will
present problems both in the ability to properly charge the laptop's battery
and also may not allow the computer to function [properly]. Best recommended
is to use the supply that was originally designed for the laptop.
"Brendan Gillatt" <brendanREMOVETHIS@brendanREMOVETHISgillatt.co.uk> wrote
in message news:NaydncRfSMdAwmzbnZ2dnUVZ8s7inZ2d@pipex.net...
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Hash: SHA1

Ray Thomas wrote:
I have 2 laptops, each requiring 19 volts DC, centre pin on connecting
plug
is + in both cases. One supply is rated at 3.42 A, the other is 4.22 A.
Is
there any foreseeable damage that might occur if I interchange them....is
it
true that the laptop will simply claim the current it requires from the
supply, so additional Amps will not be a problem (or vice versa in the
case
of underpowering) ?

The laptop will _draw_ the numer of amps it needs from its power supply.
The only danger is if the replacement power supply is rated to a _lower_
number of amps than the original - the laptop will draw too much power
from it and may overheat.

The reason I'm doing this is that one laptop is silent
with regard to radiated RF noise and hash, whereas the other is plagued
by
it, when I connect an external soundcard.
Thank you for advice,
Ray

I would think it would be okay to use the bigger supply if it fits =]


- --
Brendan Gillatt
brendan {at} brendangillatt {dot} co {dot} uk
http://www.brendangillatt.co.uk
PGP Key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBACD7433
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Version: GnuPG v1.4.3 (MingW32)

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Ed+QX8ity5Qu7vpWnpJjcJo=
=X6wv
-----END PGP SIGNATURE-----
Click to expand...
 
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