(10-24-2013, 10:48 PM)Peter_C Wrote: Which unit will also make a difference, such as mine *MUST* use a pure-sine-wave only...
As a retired truck driver, I ran my old CPAP on a 150 watt Radio shack inverter for many years on the road.
And there are varying degrees of non-linearity in inverters and backup supplies. Some are really a crude approximation of a sine wave.
The APC BR1500 is a stepped sine wave; but comprised of many steps. I'm replacing my BR1500 on my home computer system with an APC SMC1500 900Watt (1500VA) pure sine wave backup, I'm hoping to run my machine on the BR1500. It will never see the sine generator as long as the mains are hot. Just like to be able to get through a power outage.
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
Around home, in the last dozen or so years, we either lose power for a moment, or for long enough for me to fire up my back-up genny - granted, won't help with sleeping through anything, but will allow me to go back to sleep.
*I* am not a DOCTOR or any type of Health Care Professional. My thoughts/suggestions/ideas are strictly only my opinions.
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Hi, archangle, I'm a relatively "new newbie" to CPAP (just passed my first year on CPAP!!) and a "rank newbie" to anything like the discussion going on here; however, I've been watching this thread with keen interest and would like to ask if I have "this" correct:
The ResMed S9 Auto Set and humidifiers will run fine off of MSW inverters.
Therefore (?), the MSW inverter APC BR1500 is fine to use with the ResMed S9 Auto Set....??
Just need a little clarification before I buy the APC BR1500 and hook it up to the CPAP machine during winter storms. THANKS!!
Thanks, archangle, I'll read up a bit more and - most likely - proceed.
02-01-2014, 05:20 PM
(This post was last modified: 02-01-2014, 05:21 PM by Shastzi.)
The Resmed S9 Autoset runs on 24v DC at about 4 amps. Nothing special there.
But it DOES have a really stupid power plug, most likely to discourage people from building thier own (better) PS.
Know that one could dispense with the inverter type system (which wastes an incredible amount of power) and
use a pair of 12v batteries in series or a large 12v battery with a DC-DC converter to run 24V out for you.
Resmed will sell you the cigarette lighter device for a pretty penny but it's most likely worth while.
Because you can easily get twice the run time on straight DC as opposed to converting DC to 110AC (with an inverter) then BACK to 24v DC to feed the blower.
This will save you some big $$ on the back end because you dont need to buy such huge batteries.
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