Paging Mena661
What make and model LCD TV is it that you are using that draws 2 amps? Thanking you in advance.
Forum Discussion
One has to be careful with those ambient light sensors.
Our residential big screen has that option in it's setup menu and I learned early-on to keep it turned off. The picture quality was degraded a lot with this "feature" turned on - the images were too dark most of the time.
Images being (maybe too) dark is how wattage is kept low and one may not like too-dark images. However regarding myself, I spent way too many hours calibrating screen images to reference standards and most likely got too caught up in perfection when good enough was probably good enough.
The high resolution widescreen laptop that doubles for watching movies in our motorhome has it's picture brightness force-set to maximum for good image quality due to it's particular screen characteristics. It's 12V brick sucks around 3 amps to do this, however. I also leave the laptop's ambient light sensing function off when we use it in the motorhome. I switched to a 12V brick for the widescreen laptop to reduce drain on the motorhome's batteries when drycamping versus using the laptop's stock 120V AC brick that came with it that had to be powered by the motorhome's inverter. I figure that the single level DC to DC up-conversion from 12 volts up to 18 volts (from the RV's batteries up to the laptop's internal DC voltage) is more energy efficient than the up/down-conversions and DC/AC/DC transformations required when using the RV battery to power the inverter to power the laptop's stock brick.
But ... your results may vary.
Our residential big screen has that option in it's setup menu and I learned early-on to keep it turned off. The picture quality was degraded a lot with this "feature" turned on - the images were too dark most of the time.
Images being (maybe too) dark is how wattage is kept low and one may not like too-dark images. However regarding myself, I spent way too many hours calibrating screen images to reference standards and most likely got too caught up in perfection when good enough was probably good enough.
The high resolution widescreen laptop that doubles for watching movies in our motorhome has it's picture brightness force-set to maximum for good image quality due to it's particular screen characteristics. It's 12V brick sucks around 3 amps to do this, however. I also leave the laptop's ambient light sensing function off when we use it in the motorhome. I switched to a 12V brick for the widescreen laptop to reduce drain on the motorhome's batteries when drycamping versus using the laptop's stock 120V AC brick that came with it that had to be powered by the motorhome's inverter. I figure that the single level DC to DC up-conversion from 12 volts up to 18 volts (from the RV's batteries up to the laptop's internal DC voltage) is more energy efficient than the up/down-conversions and DC/AC/DC transformations required when using the RV battery to power the inverter to power the laptop's stock brick.
But ... your results may vary.
