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03-16-2009, 12:58 PM
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#1
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Newbie
Join Date: Mar 2009
Posts: 45
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Would this be ok for power a laptop?
http://www.maplin.co.uk/module.aspx?...FQo1Qwod0ASCpQ
hard wire this into ignition switched 12v feed, have a switch for the laptop power button and away you go
r have I got this wrong
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03-16-2009, 03:13 PM
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#2
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Confusion Master
Join Date: Sep 2003
Location: If you go down to the woods today, You're sure of
Posts: 11,928
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It should work, although my guess is, it really isn't to be used as a permanent solution.
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03-16-2009, 03:52 PM
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#3
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Newbie
Join Date: Mar 2009
Posts: 45
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Enforcer
Thanks for the reply....looking at your other posts you seem to know your stuff!
But I'm curious as to why you say it would not be good long term if it is installed well? what would be the alternatives for a laptop carPC ? and how are they better?
I'm very new to this so I'm looking to learn what's what
cheers
Lewis
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03-16-2009, 06:34 PM
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#4
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Confusion Master
Join Date: Sep 2003
Location: If you go down to the woods today, You're sure of
Posts: 11,928
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I'm not that familiar with laptop installs, however I have heard their is a carnetix PSu that is done especially for laptops.
Why do I think it's not good long term? Because of the nature of the unit and how laptops are normally used in the car.
Normally they will be used briefly or just charged, they are unlikely to be used day in and day out for a good period of time. Also I used to work for Maplins and have some knowledge of the products they do
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03-16-2009, 06:41 PM
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#5
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Variable Bitrate
Join Date: Jul 2006
Location: Brisbane, Australia
Posts: 344
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Also by adding a Carnetix or an Opus (which I use) you will have acces to regulated 5 volts which will be very handy to power up additional hardware such as USB hubs and DVD drives. You have to ask Opus to provide the right firmware for a laptop to auto start it but I prefer pressing the button myself. I have the Opus configured to output 19 volts which is what my HP laptop expects and this also powers my monitor which can handle up to 24 volts. the 5 volt rail powers two USB hubs and will power a USB DVD drive when I get round to it.
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03-16-2009, 08:09 PM
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#6
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Constant Bitrate
Join Date: Dec 2008
Posts: 127
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You want to stay away from any laptop power supplies that have an adjustable voltage slider or switch. Normally if they accidentally get moved to a lower voltage the laptop simply will not detect it presence and won't charge, however moving the other way and feeding it too much voltage can result in disaster. Mine is hard wired but it is a fixed voltage specific to my laptop. (19VDC).
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03-16-2009, 09:08 PM
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#7
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Newbie
Join Date: Nov 2008
Posts: 44
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Also I tried the same power supply, and it wouldn't work with my HP laptop, really don't know why and before anyone says it, it was the right voltage/current etc!
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03-17-2009, 09:22 AM
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#8
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Newbie
Join Date: Mar 2009
Posts: 45
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Thanks for the replys guys.......I bought the power adapter today to test, my laptop expects an input of 18.5v.....so I just set it to 18v and all is working fine. I can get around the switch moving voltages by covering over the switch, so that should stop it moving accidently......also this unit has a built in 5v USB charger port with lots of different tips.....so I can also power the USB hub from this.
I went on a 2 hour drive for work and I had my laptop turned on and powered by the adapter - there was very little heat coming from it....it was just warm. I'll keep testing it to see how it holds up but so far so good
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09-20-2009, 01:01 PM
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#9
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Newbie
Join Date: Jul 2009
Posts: 4
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Hi,
I have bought a similar product here in Bangalore, India.
It cost me 750INR (~15USD). It does not have a 5Volt option.
Its working fine but the only problem is that i am getting a lot of noise in the sound when i use this. I connected this to the Cigarette lighter power supply.
Can some one help. How to get rid of the noise.
Regards
Gaurav
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09-20-2009, 01:23 PM
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#10
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Maximum Bitrate
Join Date: Jul 2008
Location: Boston, Ma or NY,NY
Posts: 562
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Quote: Originally Posted by jaguar999  Hi,
I have bought a similar product here in Bangalore, India.
It cost me 750INR (~15USD). It does not have a 5Volt option.
Its working fine but the only problem is that i am getting a lot of noise in the sound when i use this. I connected this to the Cigarette lighter power supply.
Can some one help. How to get rid of the noise.
Regards
Gaurav
Are you comfortable putting a noise filter inline with the unit? Ideally you would need a cigarette lighter extension cable with built in noise filter but I don't think they make them.
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09-20-2009, 01:56 PM
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#11
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Neither darque nor pervert
Join Date: Apr 2004
Location: Elsewhere
Posts: 12,910
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Quote: Originally Posted by jaguar999 Can some one help. How to get rid of the noise.
http://www.mp3car.com/vbulletin/car-...ing-guide.html
__________________
LOOKING FOR THE FAQ? IT'S HERE.
You never found that link, did you? Why? It's hard to find in the NavBar across the top of the forums, amongst a lot of other crap.
TELL MP3CAR YOU WANT A LINK TO THE FAQ IN A MORE OBVIOUS, NOTICABLE LOCATION HERE.
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09-20-2009, 03:51 PM
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#12
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Newbie
Join Date: Jul 2009
Posts: 4
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Thanks DarquePervert and justchat_1 for such a quick reply.
I will read the suggested thread.
If i cud get away with the noise, this China product will be worth the money
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09-20-2009, 05:16 PM
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#13
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Low Bitrate
Join Date: Apr 2008
Posts: 66
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i have a question along the same line. I am using something very similar for my laptop setup, and for the audio i use a gli to clean the sound, but im also getting interference over the video. i have a lilliput 619 and when i run the laptop off battery the signal is perfect but when i have the power connected theres some bad interference. any suggestions? thanks in advance
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