masscasualty Posted April 4, 2014 Share Posted April 4, 2014 Have a Tripp Lite PV375 Portable Auto Inverter 375W 12V DC to AC 120V 5-15R 2 Outlet with 2 plug outlets for common house hold 3 and 2 prong. Plugged laptop in one and Mark V Pineapple in other, connect with wired lan cable, Vehicle running, plugged trip lite into 12V outlet. Could not get mouse cursor to stay still enough to use. It would over jump and move on its own. I suspected it was power fluxations. I left the pineapple plugged in as thats the only power I had and unplugged laptop went to battery on it. Mouse cursor still jumping around. When I then unplugged the lan cable the mouse cursor was back to normal. But plug in the lan cable--forget it--jumping around. With just laptop plugged into tripp lite its fine. It was working fine on home power. Quote Link to comment Share on other sites More sharing options...
e5iw Posted April 4, 2014 Share Posted April 4, 2014 What kind of vehicle? I think it might be something to do with your alternator or battery not able to provide the amount of electricity you are trying to draw. Quote Link to comment Share on other sites More sharing options...
e5iw Posted April 4, 2014 Share Posted April 4, 2014 Also most power inverters are not good for your battery. There are high end inverters that don't affect your battery. You should also try the same inverter in a different vehicle. Quote Link to comment Share on other sites More sharing options...
wifi-stuff Posted April 5, 2014 Share Posted April 5, 2014 You probably have a ground loop somewhere. The laptop's probably has it's own rectifier and voltage regulater internally so that the dirty power from the car isn't affecting it. The Pineapple's power supply is probably not quite as sophisticated and is passing on the dirty (or more likely, square-wave) power. You could get a pair of media converters and change your network connection to fiber and back, that would provide electrical isolation. You may also try a different inverter that generates a pure sine wave instead of a regular inverter, but that will not be cheap. This is a common problem with cheapo power supplies for mobile devices. You can see an example of the wide quality differences in power supplies here: http://www.righto.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html Quote Link to comment Share on other sites More sharing options...
clockworkorange Posted April 5, 2014 Share Posted April 5, 2014 Ya pure sine wave like this one would aid in the conversion of power form car to laptop http://www.theinverterstore.com/180-watt-pure-sine-wave-inverter.html Everyday low price: $99.00 Sale price: $79.00 180 Watt Pure Sine Power Inverter with USB Port by AIMS Model #: pwri18012s Quote Link to comment Share on other sites More sharing options...
FluxCapacitor Posted April 6, 2014 Share Posted April 6, 2014 You could also check the power using a multi meter to see if you were getting a stable input/output. Quote Link to comment Share on other sites More sharing options...
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