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Topic: Inverter installed
Posted: 30 Apr 2011 at 9:59am

I bought this 19" Emerson for my 3rd bedroom/radio room and then proceeded to never use it. I could install most any 26" with ease. But.....$$$$$. I wasn't going to pay the price for the TVs that the RV dealers sell.

Here is my install. Now, I also need to figure out a creative (i.e. cheap) way to better hide the wire/cables.

Opps! It looks like I may be 1/8" low on the right side...must remedy!!!

The bracket is a tilt model (not articulating) from (would'nt you know) Walmart. $30

Farmers

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Posted: 30 Apr 2011 at 9:52am

You guys are getting me more excited about doing mods than going camping!

creel

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Posted: 30 Apr 2011 at 8:41am

yes, the cheaper models out there, I would say, are 99% modified sine wave unless they state pure sine wave. If you read the fine print on those cheaper models, somewhere it will say modified sine wave.

The electronic circuitry of a pure sine wave is more complex than that of a modified sine wave, hence one of the reasons of their higher costs.

Just getting off topic here, the TV that came with the 177 is quite small, so the jury is still out in regards to perhaps upgrading to a larger screen size.......time will tell Smile

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Posted: 30 Apr 2011 at 6:58am

More thanks!

I have to agree with Creel that the pure sine wave is best. But, like Outbound, most everything I use is 12 volts, already. I also have a 12 volt "cigarette lighter" plug built into the coax/TV amplifier outlet near the TV. It says it is rated at 8 amps, so that should be plenty for just the 55 watt LCD.

Tech- I looked at the ones you referenced and couldn't help but notice that the cheaper ones just said "sine wave", with no specs in the description. The more costly ones said "pure sine wave" in the specs in the description. Could it be that the less costly ones are modified sine wave?

Anyway, what got all of this going is that I finally broke down and purchased/installed a wall mount bracket for the LCD. I noticed the inexpensive inverters and began to wonder??? Funny how one project tends to lead to another!

This is how it looked before the bracket install. Judge Judy anyone???

creel

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Posted: 29 Apr 2011 at 11:40pm

like I said, I tend to go overboard....but thats just me Smile

I looked at generators but so far have not deemed it a necessary accessory.

You are right, modified inverters have come a long way, however, without going into the technicalities of even a 'less square' square wave compared to a pure sine wave, it can still cause problems with appliances.

For now, I would still recommend a pure sine wave over a modified sine wave.

techntrek

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Posted: 29 Apr 2011 at 9:24pm

How about 150 watts for $110?

http://www.solar-electric.com/sasiwain1.html

This company has a great solar electric forum, too.

Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual

Outbound

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Posted: 29 Apr 2011 at 9:23pm

Two thousand watts is a lot of power. It'll keep you happy for quite a while Smile

Personally, I use a little 120 watt inverter when I want to run my TV/DVD. Fortunately, there is a factory-installed 12v outlet in the same cabinet with the 120v outlet that the TV/DVD plugs into, so its a quick and easy hookup. Modified sine inverters have come a long way in a short time. Many are rated for electronic devices and produce near-sine output.

However, most everything in our R-POD is aimed at dry camping. I've installed a couple of 12v outlets inside and one 12v outlet outside for use while dry camping and we have carefully chosen 12v devices for our trailer. I keep 12v chargers for our cell phones and for my netbook in the trailer (all bargains found on eBay). We've also got a 12v AA/AAA battery charger (camera batteries), our mp3 stereo uses 12v, our pump to move fresh water from a portable container into our fresh tank uses 12v, and even our drill (for raising/lowering the stabilizers) recharges off of 12v.

We use a manual drip coffee maker and an over-the-burner toaster, so we have very little need of 120v power. The air conditioner and the microwave are the only 120v-dependant devices and if we really need them while dry camping - or we'll be out more than three days and we'll need to recharge the battery - I'll cart along our 2200 watt (2400 watt peak) generator.

Craig :: 2009 RP171 towed by a 2017 F150

creel

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Posted: 29 Apr 2011 at 7:11pm

well the 'really wanting to watch TV part'.....leave that one with you Wink

I tend to go overboard, 2000W is quite a powerful unit, but I rather be safe than sorry. Buy the best you can/are willing to afford, you never know, may just come in handy one day to have those extra watts the inverter can give you.

With ours, I can also run the convection micro wave that came with our 177 if we wanted to.

I would go for the pure sine wave, its just that much better for electrical and electronic appliances.

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Posted: 29 Apr 2011 at 7:01pm

Thanks for the opinion. The TV I have now is/was a spare and cost about $200. The pure sine wave inverters that I have seen were in the $200-250 range. I have looked at some similar sized 12 volt TVs and they seem to be in a similar cost range (unless I upsize to a 26").

So, I am wondering.....

Should I gamble on the under $50 inverter?

Take my $200 TV and buy a $200 inverter for occasional use?

Spend a few more bucks and buy a different/bigger 12 volt TV?

And (reality check) do I really want to watch TV that bad?

creel

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Joined: 29 Mar 2011
Location: Bozeman, MT
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Posts: 32

Posted: 29 Apr 2011 at 6:31pm

It depends on what you are planning on running off of it.

Pure sine wave is better, while modified sine wave will slightly reduce the life of the electrical device you are running off it.

If you are only running very basic and cheap electrical devices such as kettles, toasters, basic battery chargers and other cheap devices, save your money and buy a standard inverter.

If you were to be running expensive devices such as fridges TV's etc, then spending a bit extra on the pure sine wave inverter is reccommended.

Modified sine wave can also induce 'noise' to an audio appliance which may result in a background buzzing or humming.

Fortunately most electronic devices including your laptop run on DC power and have buillt-in inverters and transformers, so in this case it will make no difference to it whether it is a square wave (standard inverter), or pure sine wave. You will actually be converting your car battery DC to AC via the inverter and then the laptop charger will convert it back to DC.

There are some pretty well priced pure sine wave inverters available.

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Guests Members Profile Send Private Message Find Members Posts Add to Buddy List Guest Group	Topic: Inverter installed Posted: 30 Apr 2011 at 9:59am
	I bought this 19" Emerson for my 3rd bedroom/radio room and then proceeded to never use it. I could install most any 26" with ease. But.....$$$$$. I wasn't going to pay the price for the TVs that the RV dealers sell. Here is my install. Now, I also need to figure out a creative (i.e. cheap) way to better hide the wire/cables. Opps! It looks like I may be 1/8" low on the right side...must remedy!!! The bracket is a tilt model (not articulating) from (would'nt you know) Walmart. $30

Farmers Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24 Apr 2011 Location: Connecticut Online Status: Offline Posts: 35	Posted: 30 Apr 2011 at 9:52am
	You guys are getting me more excited about doing mods than going camping!

creel Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Mar 2011 Location: Bozeman, MT Online Status: Offline Posts: 32	Posted: 30 Apr 2011 at 8:41am
	yes, the cheaper models out there, I would say, are 99% modified sine wave unless they state pure sine wave. If you read the fine print on those cheaper models, somewhere it will say modified sine wave. The electronic circuitry of a pure sine wave is more complex than that of a modified sine wave, hence one of the reasons of their higher costs. Just getting off topic here, the TV that came with the 177 is quite small, so the jury is still out in regards to perhaps upgrading to a larger screen size.......time will tell

Guests Members Profile Send Private Message Find Members Posts Add to Buddy List Guest Group	Posted: 30 Apr 2011 at 6:58am
	More thanks! I have to agree with Creel that the pure sine wave is best. But, like Outbound, most everything I use is 12 volts, already. I also have a 12 volt "cigarette lighter" plug built into the coax/TV amplifier outlet near the TV. It says it is rated at 8 amps, so that should be plenty for just the 55 watt LCD. Tech- I looked at the ones you referenced and couldn't help but notice that the cheaper ones just said "sine wave", with no specs in the description. The more costly ones said "pure sine wave" in the specs in the description. Could it be that the less costly ones are modified sine wave? Anyway, what got all of this going is that I finally broke down and purchased/installed a wall mount bracket for the LCD. I noticed the inexpensive inverters and began to wonder??? Funny how one project tends to lead to another! This is how it looked before the bracket install. Judge Judy anyone???

creel Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Mar 2011 Location: Bozeman, MT Online Status: Offline Posts: 32	Posted: 29 Apr 2011 at 11:40pm
	like I said, I tend to go overboard....but thats just me I looked at generators but so far have not deemed it a necessary accessory. You are right, modified inverters have come a long way, however, without going into the technicalities of even a 'less square' square wave compared to a pure sine wave, it can still cause problems with appliances. For now, I would still recommend a pure sine wave over a modified sine wave.

techntrek Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group - pHp Joined: 29 Jul 2009 Location: MD Online Status: Offline Posts: 9062	Posted: 29 Apr 2011 at 9:24pm
	How about 150 watts for $110? http://www.solar-electric.com/sasiwain1.html This company has a great solar electric forum, too.
	Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual

Outbound Members Profile Send Private Message Find Members Posts Add to Buddy List podders Helping podders - pHp Joined: 19 Nov 2009 Location: Oshawa, Ontario Online Status: Offline Posts: 767	Posted: 29 Apr 2011 at 9:23pm
	Two thousand watts is a lot of power. It'll keep you happy for quite a while Personally, I use a little 120 watt inverter when I want to run my TV/DVD. Fortunately, there is a factory-installed 12v outlet in the same cabinet with the 120v outlet that the TV/DVD plugs into, so its a quick and easy hookup. Modified sine inverters have come a long way in a short time. Many are rated for electronic devices and produce near-sine output. However, most everything in our R-POD is aimed at dry camping. I've installed a couple of 12v outlets inside and one 12v outlet outside for use while dry camping and we have carefully chosen 12v devices for our trailer. I keep 12v chargers for our cell phones and for my netbook in the trailer (all bargains found on eBay). We've also got a 12v AA/AAA battery charger (camera batteries), our mp3 stereo uses 12v, our pump to move fresh water from a portable container into our fresh tank uses 12v, and even our drill (for raising/lowering the stabilizers) recharges off of 12v. We use a manual drip coffee maker and an over-the-burner toaster, so we have very little need of 120v power. The air conditioner and the microwave are the only 120v-dependant devices and if we really need them while dry camping - or we'll be out more than three days and we'll need to recharge the battery - I'll cart along our 2200 watt (2400 watt peak) generator.
	Craig :: 2009 RP171 towed by a 2017 F150

creel Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Mar 2011 Location: Bozeman, MT Online Status: Offline Posts: 32	Posted: 29 Apr 2011 at 7:11pm
	well the 'really wanting to watch TV part'.....leave that one with you I tend to go overboard, 2000W is quite a powerful unit, but I rather be safe than sorry. Buy the best you can/are willing to afford, you never know, may just come in handy one day to have those extra watts the inverter can give you. With ours, I can also run the convection micro wave that came with our 177 if we wanted to. I would go for the pure sine wave, its just that much better for electrical and electronic appliances.

Guests Members Profile Send Private Message Find Members Posts Add to Buddy List Guest Group	Posted: 29 Apr 2011 at 7:01pm
	Thanks for the opinion. The TV I have now is/was a spare and cost about $200. The pure sine wave inverters that I have seen were in the $200-250 range. I have looked at some similar sized 12 volt TVs and they seem to be in a similar cost range (unless I upsize to a 26"). So, I am wondering..... Should I gamble on the under $50 inverter? Take my $200 TV and buy a $200 inverter for occasional use? Spend a few more bucks and buy a different/bigger 12 volt TV? And (reality check) do I really want to watch TV *that* bad?

creel Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Mar 2011 Location: Bozeman, MT Online Status: Offline Posts: 32	Posted: 29 Apr 2011 at 6:31pm
	It depends on what you are planning on running off of it. Pure sine wave is better, while modified sine wave will slightly reduce the life of the electrical device you are running off it. If you are only running very basic and cheap electrical devices such as kettles, toasters, basic battery chargers and other cheap devices, save your money and buy a standard inverter. If you were to be running expensive devices such as fridges TV's etc, then spending a bit extra on the pure sine wave inverter is reccommended. Modified sine wave can also induce 'noise' to an audio appliance which may result in a background buzzing or humming. Fortunately most electronic devices including your laptop run on DC power and have buillt-in inverters and transformers, so in this case it will make no difference to it whether it is a square wave (standard inverter), or pure sine wave. You will actually be converting your car battery DC to AC via the inverter and then the laptop charger will convert it back to DC. There are some pretty well priced pure sine wave inverters available.