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Old 02-14-2008, 12:02 AM   #1
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Inverter, stereo equipment

I see the lcd tv's are popular for our buses and I can understand why. What I'd like to know since I'm considering the same is....Does everyone use a modified sine wave converter for their lcd's and other equipment or pure sine wave? Or both? And what brands does eveyone prefer that do the job for a reasonable expense(if that exists). Never owned an inverter so this is new territory for me. Been reading but opinions from real world users can't be beat. Thanks, Rep
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Old 02-14-2008, 12:13 AM   #2
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Re: Inverter, stereo equipment

I have never had a problem running any piece of equipment off my inverters. Interestingly enough, though, I hooked a UPS up to it just to see and the UPS would not switch to line power so it sees it as "dirty" power. I wouldn't worry about it unless you're talking really high-end stuff. Of course, if I was running really high end stuff in my bus I would run really high end inverters feeding power supply filter cleaners anyway.

My inverters are of the Vector brand and modified sine wave variety for the record
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Old 02-14-2008, 07:25 AM   #3
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Re: Inverter, stereo equipment

I've read a few articles about modified and true sine wave inverters. Most recommend using a true sine wave inverter, when you're using it to power oxygen concentrators, florescent lights, fax machines, laser printers, high voltage cordless tool chargers, equipment with variable speed motors, electric shavers, and garage door openers. They also recommended using a true sine wave inverter for high end electronics, but I think this recommendation was mainly out of self interest (most articles were from inverter retailers).

I don't see any problems, except for maybe florescent lights, laser printer, or fax machines. The only thing that you might have problems with is noise from the equipment.

If you want to see what's available, check http://www.invertersRus.com They carry a wide range of low priced inverters, both modified and true sine wave, and you'll be able to figure what you may want.

BTW, there are many other sites with the same equipment, so check around the web. Also remember, in many cases, you get what you pay for.

If you have any other questions, drop me a line.
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Old 02-14-2008, 07:28 AM   #4
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Re: Inverter, stereo equipment

Quote:
Originally Posted by the_experience03
I have never had a problem running any piece of equipment off my inverters. Interestingly enough, though, I hooked a UPS up to it just to see and the UPS would not switch to line power so it sees it as "dirty" power. I wouldn't worry about it unless you're talking really high-end stuff. Of course, if I was running really high end stuff in my bus I would run really high end inverters feeding power supply filter cleaners anyway.

My inverters are of the Vector brand and modified sine wave variety for the record

That's funny , UPS uses a modified inverter whenever you lose power. Maybe it doesn't like eating it's own.
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Old 02-14-2008, 07:58 AM   #5
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Re: Inverter, stereo equipment

That's what I found so interesting about it.
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Old 02-14-2008, 08:46 AM   #6
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Re: Inverter, stereo equipment

Thanks y'all. I figured a modified sine wave inverter would be the ticket. No I'm not planning on running high end stuff, just run of the mill stereo goodies and tv. I see the vector brand a lot. Are they reasonably quiet?
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Old 02-14-2008, 09:58 AM   #7
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Re: Inverter, stereo equipment

I run all my equipment, including high power audio amps and LCD tv and computers off my modified sine wave inverter.

This is what I have noticed, the devices such as the computer, satellite receiver, and LCD tv/monitors work fine and you do not need to worry about them. This is because they convert everything to DC power before it even reaches the device. Anything with a power brick you should not notice any kind of effects as they convert to DC and are manufactured to run with a large range of voltage.

The amplifier for my big speakers, the VCR, and the normal tube television I had all show interference and noise when used on the inverter. When a generator of shore power is plugged in the interference immediately goes away. My normal setup consists of watching TV from the satellite and listening to music over the amps through the computer. When listening to music the interference is not so much as to be an annoyance.

NOTE: The thing that seems to provide the most interference is from the engine when it is running. Remember when you bought an old corvette with a radio they come with shielding around the plugs and wires, well my engine produces a lot of interference and watching tv over the air is possible but a bit annoying. You also here an immediate increase of interference in the audio system that increases with engine speed.
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Old 02-14-2008, 02:31 PM   #8
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Re: Inverter, stereo equipment

While you are talking about converting AC to DC does a UPS have a enough capacity to charge my house batteries and how much current do you think they can handle doing so? I have a charger/controller that I took out of a tent trailer to charge my house batteries and the controller itself is going haywire, the transformer is fine and it will put out about 35 amps I think. I wasn't planning on charging at that rate but would like 10 or 15 amps at 13.5 or so and some reliability in doing so. sportyrick
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Old 02-14-2008, 04:38 PM   #9
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Re: Inverter, stereo equipment

I am talking about DC because that is what "electronic" devices run on. Devices like a computer, LCD tv, cell phone charger, and satellite receiver all run on DC even though they have a AC input. They will convert the AC coming in to DC which it needs. Because it is doing its own conversion it as able to vary the amount of current it uses to maintain a constant DC output. This means devices that run on DC (internally) will work fine on any type of AC input.

Yes a UPS will have enough capacity to charge your house batteries, depending on how small it is it could take an unreasonable amount of time to do so however. There should be a rating on the UPS someplace. Also note that almost all large UPSs run on 24 V not 12 V so you will need to connect your batteries up in pairs.
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Old 02-14-2008, 05:49 PM   #10
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Re: Inverter, stereo equipment

I guess I can get a battery charger and steal the control out of it to keep my batteries charged. Any other ideas? sportyrick
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