Caution on inveriers

CBs, FRS / GMRS radios, stereos, computers, tools, etc. The stuff you use to support wheeling or use of your PW.
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RustyPW
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Caution on inveriers

Post by RustyPW » Tue Nov 08, 2016 4:43 pm

Caution on inverters. Was reading on a rv forum about some problems people were having. There are 2 types of inverters. A TSW (true sine wave), and a MSW (modified sine wave). It seems that the MSW does not play well with modern digital electronics. People are losing their coffee makers (K-cup type) and other electronics. :shock: It was traced back to their inverter type. The TSW inverters have no problems. I know people here are using inverters for their fridges and other stuff. I figure to give you guys a heads up. Here's a quote from the thread. This is only a part of the thread.

Generic info:
Iinverters come in 2x2.sizes types
First division
True sine wave or Modified sine wave. True is by far the best.. In the old days Xantrex, who makes both, had a document on their web site titled things that may not work properly on MSW inverters.. It was a LONG list of things and growing faster than they could update it.. Even LED nightlights are on the list believe it or not.

TSW (Also known as Pure Sine Wave) the list was much shorter.. In fact it had only one entry (Common to both lists by the way)

EVERYTHING, even my most sensitive radio receiver works just fine with the TSW inverter on and working, ONLY thing that ever gave me a problem was a deffective to began with coffee pot.. It has since been replaced..twice. (First replacement wore out, I'm a coffee-holic don't you know)

Now, to the comments:
Some of the MSW inverters out there are el-cheapo pieces of .... Avoid them.

But when you get a True Sine Inverter with a decent 3-stage charger module... I've yet to see one of those that was crap. All were well designed. Of course with the influx of China products.. that may change some day soon, or not.
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DamageWagon
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Re: Caution on inveriers

Post by DamageWagon » Tue Nov 08, 2016 9:17 pm

Good subject to mention. The biggest risk we have is our laptop. Laptop chargers need tries sine wave or you can kill the laptop. Finding a dedicated 12v charger is better if there is one.


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Mule007
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Re: Caution on inveriers

Post by Mule007 » Thu Nov 10, 2016 9:26 pm

Good information !! Thank you for the heads up,,,,much appreciated
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Re: Caution on inveriers

Post by MikeKey » Fri Nov 11, 2016 10:24 am

Magnum is a great product, and made in the USA, their prices though reflect that. Samalex makes their inverters in China, but they are equal quality. I have had one of their Pure Shines in my Airstream for a year and a half, no problems, and 600 watts.
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Low_Sky
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Re: Caution on inveriers

Post by Low_Sky » Fri Nov 11, 2016 10:36 am

Does anyone know with 100% certainty that the 110 outlet that Ram is putting in the dashboard is MSW? I'm 99.5% sure it is, but I'm no expert.


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DamageWagon
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Re: Caution on inveriers

Post by DamageWagon » Fri Nov 11, 2016 11:25 am

Low_Sky wrote:Does anyone know with 100% certainty that the 110 outlet that Ram is putting in the dashboard is MSW? I'm 99.5% sure it is, but I'm no expert.


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I would always assume it is MSW until proven otherwise. TSW is much more expensive. It can be checked by using an oscilloscope though. TSW has a smooth sine wave, whereas MSW uses a block pattern that switches instantly from + to -


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Re: Caution on inveriers

Post by RustyPW » Fri Nov 11, 2016 8:59 pm

2 diagrams of the sine waves.
Attachments
modified-sine-wave-vs-pure-sine-wave.jpg
sine or modified.png
sine or modified.png (76.81 KiB) Viewed 542 times
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2008 POWER WAGON RC
Mods to the PW; Nerffed Mopar RockRails, Wheel Well Liners, Bushwacker Pocket Fender Flairs, Garvmin dezl 560LMT GPS, Power Wagon Winch Kit, Line X Ultra Bed Liner, PIAA Headlight Bulbs, PIAA 580 Driving Lights (135 watt), PIAA 520 Fog Lights (135 watt), PIAA 520 ATP Off-Road Lights (135 watt), Locker Bypass, Modifed Rockcrusher Diff Covers, Mopar Utility Bed Rails and Tool Box, Warn Winch Wireless Remote Control, "el-cheapo" Inclinometer, Airaid CAI, Winch TPS Bypass, 35" Toyo's, Mopar Spare Tire Lock, 'T' Steering Linkage, Modifed PSC Steering Brace, P3 Brake Controller, Modifed Fusion "mall crawler" rear bumper , PIAA 1500 Back-Up Lights, 1Ton HEMI Tranny Cooler, Leer 100XR Bed Cap, Factory Tow Mirrors, CenterLine Rims 17x9-5.25 BS, Mag-Hytec Tranny Pan, AutoMeter Gauges, PSC Extreme Hydro Assist Steering, Carli Track Bar, Carli Ball-Joints, Dynatrac FreeSpin Hubs, Snorkel, RCV Axles, EBC Pads & Rotors, Aluminess Front Bumper, BIG Pul-Pal, 60" Extreme Hi-lift Jack, and more riggin' equipment, Carli Long Travel Air Bags, Bilstein 7100 Shocks - Carli Valving, MORE STUFF COMIN'.

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Limamikemike
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Re: Caution on inveriers

Post by Limamikemike » Sat Nov 12, 2016 6:26 pm

We've got a mod sine xantrex 1800w in our trailer and have been running a mini keurig and a LCD tv on it for a couple of years. No issues, I have heard that it can mess with anything that uses a clock though.
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