12v Converter question

There are Buck/Boost devices (Go to allelectronics.com and check their catalog, then shop other places for a larger seletion)

19.6 times 0.2 is about 3.9 so you should be able to go down to around 15 volts or perhaps a bit less before performance on that TV suffers.. Most House systems are 13.6 That's a bit low.. but I'd try a direct feed. It will not hurt the TV and it **MIGHT** work depending on how much wiggle room they built in.

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Many computer stores have adjustable 12 volt supplies. 19.5 is on the list I thint (you can use 19.anything with that set) So you might try a computer DC power pack from MicroCenter or Frys or some other store. Even Radio Shack has one or google IGO.com

IMHO

I'm cheap. Serious flaw with regards to wasting anything.

This is NOT a direct comparison between using straight DC input versus converting correct voltage with an inverter. Sorry charlie :) been there done that and got the T shirt.

Let's take a look...

Battery
Inverter
Power Brick
THEN
The TV

Battery
DC/DC booster
Television

Almost DOUBLE the watts



AMAZON PRIME


uxcell Power Converter Regulator DC12V(10V~16V) Step-Up to DC19V 8A 152W Waterproof Voltage Convert Transformer
4.9 out of 5 stars 11 customer reviews
Price: $19.99

Fixed voltage. Follow the diagram to connect the four wires. This unit is water resistant and has no exposed terminals.

My thriftiness tells me if I want an INverter I will choose a sine wave model which would use far too much power for a little TV but be infinitely more all-around useful than a tiny really undependable piece of snot.

Long-term loads add up. Call it nickel and diming a battery to death. It's the same philosophy as using lights for hours on end. It all adds up.

I would just get a cheap MSW inverter - they are very efficient.
In fact that is exactly what I did with our last RV. I got a 175 inv. and plugged it into a 12V outlet. Worked great and used very little energy.

If you will be using a DVD as well, you already are using an inverter, so might as well use that for the TV too.

BTW unplug the TV when not in use when the inverter is on for something else in the rig. The TV has a draw in standby when "off". A power bar with its own switch is good for that.

My TV inverter...cigarette plugin...is 87% efficient while the 28 inch TV uses 40 watts. Not sure about the antenna booster.

While a modern TV don't use a lot of power most inverters are very inefficient meaning the inverter will use much more power without even having the TV on. If boondocking this could reduce battery runtime.

I suggest getting a TV that actually RUNS on 12 V for the RV.

But even that solution isn't perfect......as you need a 12 V outlet nearby AND I discovered mine won't run if the input voltage is above 14.2 or so. A minor inconvenience.

I looked on EBay and found a couple of 12v to 18-19v inverters. However, an inverter to 120 vac as mentioned by rjniles, above, is a much more versatile solution. You don't need much power to run a TV.

I assume by TV you mean a television that has a wall wart that plugs into a 120 volt receptacle and puts out 19.6 volts to power the television. Your best bet is to get a 12 volt Dc to 120 volt AC inverter.

https://www.amazon.com/Enkey-Power-Inverter-Converter-Charger/dp/B071NV6HYC/ref=sr_1_1_sspa?ie=UTF8&qid=1515336781&sr=8-1-spons&keywords=12+volt+converters&psc=1