Thread: Powering laptop and 2 LCD's

OK I did some more searching and I found 1 thread (sorry I can't remember where it was at), that seemed to imply that if I use an Inverter with 2 or 3 AC plugs on it, then I can wire the LCD(s) directly to the inverter, as it puts out a regulated 12V, which is needed for my LCD's. I do realize that this isn't the most efficient of setups, but it does address my issue of completing my setup with little or no cost (<$100).

that's what i've found out as well. However an inverter pumping through the laptop is supposed to create a humming or buzz sound through the speakers when out putting from the laptop to the cars speakers. You can however get a ground loops isolater to resolve this.
http://www.radioshack.com/product.as...t%5Fid=270-054

Have you actually tested the LCD hooked directly to the inverter? If i use the inverter then I definitely plan on using the GLI to reduce the noise. On another note, if I power the laptop using a auto/air adapter, and only use the inverter for the LCD's, will I still have the noise issue?

Thanks for the reply Confused. I definitely plan on grounding the system completely to avoid any noise. Another thought just popped into my head as far as powering the LCD's. If I am using one of the auto/air adapter bricks that put out say 22V, could I somehow tap into that to power the laptop and LCDs, or would that be too much to handle?

ok so if I have an inverter, how do I go about grounding the casing? Do I run a wire from somewhere on the case body to metal point?

Originally Posted by Confused

If you have noise in your audio system due to an inverter, fix the problem rather than band-aiding it.

Sort out your grounding. Ground all points to the same spot. Including the casing of your AC PC power supply.

Get that done right and you won't need a GLI.


Garry