12vdc to 19vdc Invertor ?

[Colin Lowe]

Hi all,
I want to make a convertor to step up the voltage from 12vdc to 19vdc to
power my laptop. The mains adaptor I have for the laptop is rated 19vdc and
3.16A. Thefore I want to step-up the voltage from the 12vdc boat supply to
19vdc with a capacity of 3.16A max current.
Do you have a circuit or what other options do I have?

Thanks
Colin

 

[Michael Morrow]

Caution! Your laptop is going to be the test for your project. Check the
manufacturer for a 12v adaptor. I know sometimes they are expensive, but how
much would it cost to replace your laptop?

Mike M

 

[the Wiz]

Hi all,
I want to make a convertor to step up the voltage from 12vdc to 19vdc to
power my laptop. The mains adaptor I have for the laptop is rated 19vdc and
3.16A. Thefore I want to step-up the voltage from the 12vdc boat supply to
19vdc with a capacity of 3.16A max current.
Do you have a circuit or what other options do I have?

Thanks
Colin

What if it was available ready-made for under US$30?

Universal DC laptop adapter on eBay for US$26.24 (Buy It Now):
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3436683110&category=31575

I have one of these that works OK with a Compaq Presario 900 series laptop.

A Google search with the following terms
laptop power adapter 19 volt auto
should find what you want.

www.powerstream.com has adapters specific to your laptop model for US$80.


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johnecarter at@at mindspring dot.dot com. Fix the obvious to reply by email.

 

[Baphomet]

Caution! Your laptop is going to be the test for your project. Check the
manufacturer for a 12v adaptor. I know sometimes they are expensive, but how
much would it cost to replace your laptop?

Mike M

Excellent point.

 

[Anders]

Hello
I have made 3 DC/DC converters for a car or boat with no trubble at all.
Just connect to National web and webench and specify your needs. It will
sugest a circuit and you can print the chematic and make a termo test. It is
a fantastic web sight.

Anders