I have a question regarding AC/DC Power Adapters. I just purchased an
LCD monitor w/out a power adapter. It officially needs a 12VDC, 3.5A
to work. Will a power adapter that supplies 12VDC, 4.0A work
correctly? Will power adapters rated w/ higher output AMPs work for
applications that require less? |
Request for Question Clarification by
mathtalk-ga
on
14 Apr 2004 19:51 PDT
Yes, a higher rated power supply means it will work in your
application that requires less. In fact the spec for the appliance
(LCD monitor in this case) is really an upper bound on current
consumption; most of the time it may draw less current.
The other compatibility issue is the DC plug, generally a recessed pin
on the appliance that fits a round plug from the power adapter. There
are a surprising number of variations. With the adapter unplugged,
try the fit. If it slips into place with a convincingly snug touch,
I'd say you're set!
regards, mathtalk-ga
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Clarification of Question by
frozenrubber-ga
on
14 Apr 2004 20:55 PDT
That answers my question perfectly. Unfortunately there are many
types of small variations in the power input plug, and I'll have my
work cut out for me (or maybe i'll get lucky) in finding the right
diameter one (since I can't find any manufacturer specs: Sylvania
L151). I'll check the polarity graphic as well before I attempt it.
If the polarity is incorrect between the plug and the monitor, could I
cause any damage or will it just not power?
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Request for Question Clarification by
mathtalk-ga
on
15 Apr 2004 05:01 PDT
Potentially incorrect parity can damage the appliance (or monitor in
your case). The variety of plug shapes and sizes is intended to
largely prevent this however.
Awhile back I had a mobile telephone I got at a deep discount because
it was a discontinued model, and it lacked the power adapter. Radio
Shack had an adapter that came with a variety of interchangeable
plugs, to address the variety of parities and shapes. Basically they
sold you a base adapter of the correct amperage (and voltage) and then
you put the right "tip" on the end.
They may be able to sort out the right plug for you, if you happen to
live near one of their stores.
Is Sylvania L151 the model number for the LCD monitor?
regards, mathtalk-ga
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