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 > Inverters : modified sine or pure sine wave

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2manytoyz

Central FL

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Posted: 05/08/08 12:34pm Link  |  Quote  |  Print  |  Notify Moderator

Info on inverters: http://2manytoyz.com/inverters.html

My 42" HDTV, Bose Sound System, etc, functions the same when running on a MSW UPS unit, or from the wall. Just as clean & crisp, no noise. Most things will run will operate fine on a MSW inverter. $29 will get you a 400 Watt Vector inverter. Try it, you'll probably like it.


Robert
Cocoa, FL
2007 Rockwood TT 2502
Equalizer Hitch
Prodigy Brake Controller
2005 Nissan Xterra
2006 Jeep Wrangler Unlimited
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JUrban

Delaware

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Posted: 05/08/08 01:29pm Link  |  Quote  |  Print  |  Notify Moderator

I used to have a 2005 Diesel Bounder with a MSW inverter. We found that when using our DirecTV on the upper channels (300+) we would get intermittent reception. Switching to a pure sine wave inverter for all the electronics solved all the problems.

John


2008 Tiffin Allegro Bus 40' QSP
2006 Chevrolet Colorado Toad
BlueOx Aventa LX Tow Bar
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Clay L

Sioux Falls, South Dakota

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Posted: 05/08/08 03:12pm Link  |  Quote  |  Print  |  Notify Moderator

elh0146 wrote:

Clay L wrote:

Harbor Freight has a 400 watt true sine inverter on sale for about $30. That's pretty cheap for a true sine inverter and I don't know how good it is.

If you're talking about this one (it's the only 400-watt inverter I saw on Harbor Freight's website and it sells for $29.99), it is a modified sinewave inverter, not a true sinewave inverter.


You are correct.
I haven't seen the unit just the ad in the flyer my SIL got yesterday.
I just went over and got the the flyer from her and found the ad. It is the one you referenced and is a modified sine wave.
In the ad the word "modified is by itself and on the line above the rest of the wording and is next to a picture of the unit. The word "sinewave" is the first word on the next line and faked me out.
I thought that was too cheap for a true sine inverter.


Clay (WA5NMR), Lee,(Wife) Codi, Brandi (Shelties) and Damncat (damn cat)

Full Timing in a 2004 Winnebago Sightseer 35N, Workhorse chassis, Honda Accord toad

Retired_nuke_ET

Carrollton Va.

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Posted: 05/08/08 04:47pm Link  |  Quote  |  Print  |  Notify Moderator

Clay L wrote:

elh0146 wrote:

Clay L wrote:

Harbor Freight has a 400 watt true sine inverter on sale for about $30. That's pretty cheap for a true sine inverter and I don't know how good it is.

If you're talking about this one (it's the only 400-watt inverter I saw on Harbor Freight's website and it sells for $29.99), it is a modified sinewave inverter, not a true sinewave inverter.


You are correct.
I haven't seen the unit just the ad in the flyer my SIL got yesterday.
I just went over and got the the flyer from her and found the ad. It is the one you referenced and is a modified sine wave.
In the ad the word "modified is by itself and on the line above the rest of the wording and is next to a picture of the unit. The word "sinewave" is the first word on the next line and faked me out.
I thought that was too cheap for a true sine inverter.


Looking at the web page shot, I wonder what the real continuous rating is since all it says is "400W for 30 minutes" and "800W Peak". Probably only 300W or 350W at best but for $29.99 what do you expect.

Clay L

Sioux Falls, South Dakota

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Posted: 05/09/08 08:14am Link  |  Quote  |  Print  |  Notify Moderator

Retired_nuke_ET wrote:



Looking at the web page shot, I wonder what the real continuous rating is since all it says is "400W for 30 minutes" and "800W Peak". Probably only 300W or 350W at best but for $29.99 what do you expect.


Heck it's even cheaper now - on sale for 24.99.

VE3ESN

Ontario, Canada

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Posted: 05/09/08 08:53am Link  |  Quote  |  Print  |  Notify Moderator

We have an older AC/DC TV/DVD combo with a NTSC tuner. We don't have a PSW inverter. I did find a converter box that uses a small plug-in "transformer" that changes the 120 VAC to 12 VDC. This would be ideal for boondocking; no inverter would be needed. The converter box is the Artec T3A-Pro. (We don't have one yet, but it's on our list!)


Jerry & Susie
1996 Roadtrek 190 Versatile (Dodge 5.2 L)
FMCA F390585


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