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inspiron 8500 DC power and CPU speed
My main question (1) is: is there a way to use the inspiron 8500 at full CPU speed when not using the Dell PA-10 AC power adapter? I've been planning on using the laptop in a remote location off a bank of car batteries. I'd like to use a DC adapter to power the laptop, but I’ve noticed, since the AC adapter isn’t recognized it runs the CPU at half speed. Setting Speedstep to run at full speed for both AC and Battery doesn’t make a difference.
Both the 65W Dell AC/DC adapter (Manufacturer Part# F2663 / Dell Part #: 310-4804) and the 70W Targus air/DC adapter (Manufacturer Part# PA358U / Dell Part #: A0098237) are lower wattage sources. Neither will recharge the batteries in the 8500 so I assume neither will run the 8500 at full CPU speed.
The option is to run the replacement PA-10 AC adapter from an inverter. Since the AC adapter is an inductive load it may be damaged by non-pure sinusoidal inverters. This would mean that I’d have to go with a very expensive pure-sine inverter if I don’t want to risk burning out the new AC adapter.
Other Questions: (2) Is there a DC adapter that provides 90W? (3) If so would the i8500 recognize it as an approved power source? (4) Is there a way to fool Speedstep into running the CPU at full speed? (5) Am I missing something obvious?
-Joe Bauer
Kayaker19
90 Posts
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March 1st, 2006 15:00
http://accessories.us.dell.com/sna/ProductDetail.aspx?sku=A0406008&c=us&l=en&cs=19&category_id=5851&page=productlisting.aspx
Pure sine wave inverter is feasable but the added efficiency loss will be subtantial and unnecessary. Most 3rd party adapters do not offer the communications capability (handshake) needed for the 8500 - ie. the Targus does not, so regardless of the power, it will not charge.
thebitboy
9 Posts
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March 2nd, 2006 12:00
That's an adapter I've never seen before. It looks like the closest thing to do what I want. I imagine it would run the CPU at full speed but I'd like to make sure. None of the other i8500 adapters say that they will run the laptop at 50% speed. I'd think that would be a major specification to mention in the product descriptions.
-Joe
Kayaker19
90 Posts
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March 2nd, 2006 12:00
ownfivelaps
3 Posts
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March 16th, 2006 12:00
I have a good AC adaptor but a bad connector at the laptop.
Tried to replace connector, tried to use a dock station with no good results.
Kayaker19
90 Posts
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March 16th, 2006 13:00
ownfivelaps
3 Posts
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March 16th, 2006 13:00
Can you tell me any detail of how the signal communications works ?
Kayaker19
90 Posts
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March 16th, 2006 14:00