Inverters and appliances (anyone use CPAP?)

[TD4FREEW/CTD]

One of the better exscuses i'm using to justify a TD build is the fact that i need 110v AC power when i sleep. I have sleep apnea and i use a special breathing machine when i sleep. i have read the instructions and have not found any information about alternative power sources.

I know certain appliances need clean true sine wave AC current in order to function properly. i really dont want to destroy a $1500 medical device on a weekend of camping by feeding bad power. I do plan on calling the manufacturer and requesting further information.

anyway, my question is, does anyone know exactly what type of machines absolutely require expensive "pure sine" power? What machines will happily gobble up "modified sine"? And what appliances absolutely dont care what kind of crappy inverter you use?

I know my freind almost ruptured the lithium ion battery in his MP3 player by charging it through a cheapo cig lighter inverter.

any and all input is appreciated.

Thank, Karsten

[madjack]

Karstens, alot of folks use cpap's, if you click on the "search' button in the top index and enter "cpap" you will find lotssa info...true sine wave inverters are mostly for very sensitive electronics such as your friends Mp3 player, some televisions, computers and such...most common household applicances can run just fine offova mod sinewave inverter...your cpap can PROBABLY be run offova one as well but you should check with the manufacturer about alternative power.............
madjack

[kartvines]

I had the same problem, so I went back to my doctor and he order me one that will convert over to run on 12 volt, he told me that my old one was out of date and all of the new one he said was able to run on AC or DC, I have not used mine yet in the teardrop but I look forward to trying it for the first time, the only problem I will have on mine is not being able to fill the water tank, due to my shelf that hold my c-pap machine will sit over my head, my doctor also told me that I will not be able to use the heating plate on my machine that warms up the water, because that will draw too many amps on DC.

[TD4FREEW/CTD]

just looked at my cpap and realized the power goes into an ac-dc converter before it goes to the unit. its 12v DC 4.3a sweeet!

[dreadcptflint]

You are definitly not the only CPAP user in here. There are a couple of different set ups for you to concider. One of the gals provided this link: http://cpaptalk.com/ for some really detailed information concerning CPAPs. I am just starting looking into it so I can not provide too much detailed information.