Post Reply 
[Equipment] Portable generator to power S9
Author Message
OMyMyOHellYes Offline

Advisory Members

Posts: 915
Joined: Mar 2013

Machine: Respironics 560 Auto
Mask Type: Nasal mask
Mask Make & Model: Resmed Mirage FX
Humidifier: Respironics System One (no heated hose)
CPAP Pressure: 08.0-15.0 cm/H2O
CPAP Software: EncoreBasic

Other Comments:

Sex: Male
Location: Texas

Post: #31
RE: Portable generator to power S9
(09-07-2014 12:12 AM)Ghost1958 Wrote:  Maybe a gas powered cpap machine LOL.


Please don't say "gas" and "cpap" in the same sentence. When I first started, I put the S8 on the floor by the head of the bed. Right next to where the Saint Bernard slept.

Nothing like pressurized dog flatulence piped directly into your nose.

OMM
09-07-2014 09:27 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
Ghost1958 Offline

Advisory Members

Posts: 957
Joined: Aug 2014

Machine: PRS1 Series Sixty Auto Aflex
Mask Type: Nasal mask
Mask Make & Model: F&P Eson
Humidifier: PRS1 with Heated Hose
CPAP Pressure: 10.5 min 16 max
CPAP Software: SleepyHead EncoreBasic

Other Comments: Moderate to Severe SA Obstructive. Rapid O2 desat off the machine.

Sex: Male
Location: KY

Post: #32
RE: Portable generator to power S9
(09-07-2014 09:27 PM)OMyMyOHellYes Wrote:  
(09-07-2014 12:12 AM)Ghost1958 Wrote:  Maybe a gas powered cpap machine LOL.


Please don't say "gas" and "cpap" in the same sentence. When I first started, I put the S8 on the floor by the head of the bed. Right next to where the Saint Bernard slept.

Nothing like pressurized dog flatulence piped directly into your nose.

OMM

LolaboveLolaboveDielaughing
09-08-2014 04:44 PM
Find all posts by this user Post Reply Quote this message in a reply
o2meister Offline

Members

Posts: 4
Joined: Dec 2012

Machine: ResMed S9
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro Mirage
Humidifier: ResMed
CPAP Pressure: 14
CPAP Software: Not using software

Other Comments:

Sex: Male
Location:

Post: #33
RE: Portable generator to power S9
Thanks for all the input! The generator is a Honda model. Haven't tried it yet........
09-20-2014 09:08 AM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
GeoffD Offline

Preferred Members-2

Posts: 194
Joined: Sep 2014

Machine: ResMed Airsense 10 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed AirFit P10
Humidifier: Integral + ClimateLine
CPAP Pressure: 14-17
CPAP Software: ResScan

Other Comments:

Sex: Male
Location: New England

Post: #34
RE: Portable generator to power S9
(09-06-2014 01:31 AM)Skypilot Wrote:  
(09-05-2014 07:40 PM)woozie38 Wrote:  
(09-05-2014 09:29 AM)o2meister Wrote:  Can you use a portable generator to power an S9? I called ResMed technical support and they told me that you could NOT. Not sure if they just wanted to sell me a battery!
The short answer is NO you can't, but it depends on the generator. If your generator has permanent magnets instead of field coils, its a good chance it will produce suitable power. However most generators produce a sort of modified sine wave which is not suitable and will cause heat to build up in the power transformer of the PAP machine's power supply.The transformer will burn out. Any device equipped with a power transformer requires a pure sine wave power source. The alternative as you've been advised is to use an accumulator (battery), which is probably best anyway.

The power bricks that come with the CPAP machines do not use transformers - they are switch mode power supplies - no transformer.

Switch mode is much more efficient than a transformer and allows the the wide voltage range of 115 - 240 - you can't do that with a transformer; you would have to move a switch to use different tappings on the transformer.

This captures it. A switching power supply uses diodes to shape the AC SIN wave to DC. You can feed a total garbage wave form into it and it will still function just fine. A surge suppressor certainly wouldn't hurt but it would take a heck of a voltage spike to blow up a switching power supply.

If I lived somewhere with lousy power, I'd likely install a UPS (uninterruptible power supply). If I had _REALLY_ bad power, I'd run the unit off a couple of gel cells (yacht batteries) with a 24v supply to charge the gel cells. That's how carrier grade telephone equipment is powered but it uses 4 gel cells and 48v instead of the 24v DC a ResMed S9 uses.
09-20-2014 11:38 AM
Find all posts by this user Post Reply Quote this message in a reply
surferdude2 Offline

Advisory Members

Posts: 1,077
Joined: Jul 2014

Machine: ResMed S9 AutoSet
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro & Optilife
Humidifier: ResMed H5i @ #3 if nose breathing & #5 if mouth breathing
CPAP Pressure: 12 ~ 20 & 11 ~12 if nasal mask
CPAP Software: ResScan SleepyHead

Other Comments: Late stage 2 emphysema

Sex: Male
Location: Mousetown, Southern Illinois

Post: #35
RE: Portable generator to power S9
I dropped out of this thread long ago since a lot of it is struck me as much ado about nothing. JMHO of course.

GeoffD is spot on with his comments and I wouldn't hesitate to run my CPAP power supply from any old generator I chose. Frying a switching power supply by not inputting a pure sine wave A.C. input isn't something I worry about. Neither is how a non-sinusoidal input voltage would affect the well filtered D.C. output. Stick a scope on the output and you'll see a straight line.

The greater worry may be that the power supply or CPAP machine will die a natural death and you would be better off using that extra money you spent on a pure sine wave type ginny to buy spare units for that occasion.

<ducking>
09-20-2014 01:07 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
o2meister Offline

Members

Posts: 4
Joined: Dec 2012

Machine: ResMed S9
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro Mirage
Humidifier: ResMed
CPAP Pressure: 14
CPAP Software: Not using software

Other Comments:

Sex: Male
Location:

Post: #36
RE: Portable generator to power S9
Thanks again to all giving input! I'm a Registered Respiratory Therapist with 40 yrs experience including being a Department Director of a hospital-based Sleep Disorders Center. That didn't make me an RPSGT (registered sleep tech) nor do I know much about electronics. That's why I appreciate everyone's input!!
09-20-2014 01:16 PM
Find all posts by this user Post Reply Quote this message in a reply
Evpraxia Offline

Advisory Members

Posts: 313
Joined: Aug 2014

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift LT for Her - Nasal Pillows System
Humidifier: ResMed H5i
CPAP Pressure: 7-17
CPAP Software: ResScan SleepyHead

Other Comments: Cat Staff, bibliophile, love Classical & Byzantine music

Sex: Female
Location: Pacific Northwest USA

Post: #37
RE: Portable generator to power S9
(09-07-2014 09:21 AM)Galactus Wrote:  
(09-07-2014 12:12 AM)Ghost1958 Wrote:  I did call later this evening and there are gen sets with built in sine wave whatevers that a Rrespronics machine can be run from but they are costlier than the regular generator an a UPS in line to smooth the flow.

Yes, also if you buy a generator with the more expensive option and it blows up you also loose the sine wave and power conditioning of the UPS which is why it has always made more sense to me to use a less expensive generator and a better ups.

Just as an example a major liquidator is selling a 3250 generator for $219 delivered with free shipping currently which is way way more than you need for two paps and even a few lights, and a quick search yielded me this CyberPower CP850PFCLCD 850VA PURE Sinewave Series UPS - 10 Outlets which is also way more than needed for $119 from a large computer seller, and your all done. I can't post any commercial links here but if you want to PM me I'd be happy to link you.

If the genny dies you can replace it with anything, and if the ups dies same story. Otherwise you get stuck with a higher end genny that must be replaced with another high end unit.

Since my hubby and I are planing to be motorhoming in the next yr to yr 1/2 having the ability to use our APAPs is critical to our planning. Good info; thanks.

Evpraxia in the Pacific Northwest USA
Diagnosed: 44 AHI when supine, O2 down to 82%
Treated since 20 Sept 2014:: 0.7 AHI, Settings 7-15, EPR on Full Time at Level 3
Better living through CPAP/APAP machines!
09-20-2014 09:26 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
Post Reply 


Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Insurance won't pay for power cord? CharlotteYork 13 918 11-17-2016 11:58 PM
Last Post: tzk321
Idea ResMed S8 repair for no power SuperSleeper 4 262 11-17-2016 02:41 PM
Last Post: 10bigal10
  Power Outage: Stay Awake Or Sleep W/O CPAP? player 11 721 10-26-2016 08:29 PM
Last Post: sonicboom
  WINTER COMING....POWER OUTAGES??? giftofsleep 2 330 10-06-2016 06:52 PM
Last Post: justMongo
  DreamStation power supply Bouncer334 4 563 09-03-2016 11:07 AM
Last Post: Perchas
  [Equipment] Camping for 7 days - AirCurve 10 ASV - battery power? Grooves McFly 21 2,795 08-31-2016 01:29 AM
Last Post: Maskup Sleepwell
Surprised [Equipment] Emergency backup power Marthajoy7 9 603 08-21-2016 10:00 AM
Last Post: icyura10

Forum Jump:

Who's Online (Complete List)