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Old 09-06-2006, 06:46 PM   #11
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Running an inverter.. so wondering how much power draw there is...


Anyone know of any programs that can be used to change the fan speed on laptop? (Model ACER 5002).

Previous 2 laptops I know of that people owned overheated.. so want to see if I can have the fan speed come on earlier.. ( Those that overheated was DELL Persario'* )
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Old 09-06-2006, 06:49 PM   #12
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What is the efficiency % of the inverter?

OK, try and follow along:

12volts > 120volts is accomplished by wattage exchange. Take for example: With you inverter, you want to run a 60 watt, 120 volt light bulb. You will pull 6 amps from your 12 power source. You see how I am getting that? 10 times the voltage, 10 times the current.

So about 6 amps from the 12 volt source.

As for the fans, IDK!
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Old 09-06-2006, 09:01 PM   #13
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You probably have the fan speed setting in the bios, change it from 'auto' to always on high (or simular)
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Old 09-06-2006, 09:27 PM   #14
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Old 09-07-2006, 12:27 PM   #15
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Quote:
Originally Posted by 1337ssei
http://www.almico.com/speedfan.php
for the fan speed
Downloaded it yesterday.. I can see the temp. but nothing under fan or speed on the program.


back the the electrical part.. so providing 100% efficiency ( that won't happen )
120V input @ 1.5amp = 12v @ 15 amp
12V x 15amp = 180 watts @ 12V ???
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Old 09-07-2006, 12:35 PM   #16
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I'm having trouble remembering the rules for that formula, but I don't think the conversion works when you are going from AC to DC.
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Old 09-07-2006, 12:49 PM   #17
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Quote:
Originally Posted by J Wikoff
I'm having trouble remembering the rules for that formula, but I don't think the conversion works when you are going from AC to DC.
It does actually. The E-I-R rules are the same, except for impedeance.
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Old 09-07-2006, 12:54 PM   #18
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Quote:
Originally Posted by Drifter420
Quote:
Originally Posted by 1337ssei
http://www.almico.com/speedfan.php
for the fan speed
Downloaded it yesterday.. I can see the temp. but nothing under fan or speed on the program.


back the the electrical part.. so providing 100% efficiency ( that won't happen )
120V input @ 1.5amp = 12v @ 15 amp
12V x 15amp = 180 watts @ 12V ???
So what your saying is the laptop power supply draws 1.5A @ 120v? The (1.5A draw that the power supply pulls is the maximum. Normally you will not pull that much.

In my experience with this, I would say that you will be pulling 8-10A from your 12v power source. The car or generator should be fine.
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Old 09-07-2006, 12:59 PM   #19
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Ok am i reading this thred right...

You want to put a Laptop in your car?...

If so why dont you just get a Power Inverter and your done. Mount it where ever and plug you AC power plug into that.
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Old 09-07-2006, 09:56 PM   #20
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Yea.. plannin on goin with an inverter.. I know the bigger is better type of thing.. but bigger also means huge monstrous inverter... I don't want something small and puny thats going to run way too hot.. I'm probably aiming for 200-250Watts inverter.. but I'm just curious as to how much draw am I expecting.. just one of them things that make you go hummm......
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