"Just to tidy this up, I finally had an in-person review by my sleep clinic yesterday, who agreed the ResMed AirSense 10 was "wheezy" and replaced the machine."
Sleep Apnoea Forum Bringing Help + Support to the Patient
DC power leads
Hi, wonder if anyone can help me, I am looking for a DC power lead without the car lighter attachment for my Philips REMstar Auto A-Flex. I'm currently using an inverter and a leisure battery when caravanning and not hooked up to mains electricity. The inverter is exceedingly noisy but is worth it for a good nights sleep but it does drain the battery quite quickly.
Views: 276
Replies to This Discussion
-
Permalink Reply by Sleep2snore on
-
If you are good with a soldering iron you could make one.
Or you could buy one with a car lighter plug and get and car lighter extension lead, these normally have crocodile clips on the end. Just be careful with the polarity on both leads.
Trace the wires out with a multi-meter, or get someone to check it for you.
Do not mix the connections up when you connect it to a battery.
-
Permalink Reply by Adam Humphreys on
-
Sleep2snore said:If you are good with a soldering iron you could make one.
Or you could buy one with a car lighter plug and get and car lighter extension lead, these normally have crocodile clips on the end. Just be careful with the polarity on both leads.
Trace the wires out with a multi-meter, or get someone to check it for you.
Do not mix the connections up when you connect it to a battery.
I'm not to bad with a soldering iron but where can I get the extension lead from? I've seen the lead with car lighter attachment but not the other one.
However I wouldn't want to damage my machine.
-
-
I got one from an AUTO parts company. Most car accessory shops should stock them or could get you one.
Wish I could remember where I put it, I could use it now!
It used to be with the tyre compressor, but I can't find it.
-
-
A thing to watch when using DC power leads is some machines use the centre pin being negative instead of positive as in most cars these days, so be careful when connecting DC power leads.
Also car batteries are not the best to power a CPAP machine off as if the car battery is discharged more that 30% it can start to eat at the battery and dissolve the plates that supply the power. If using a battery t is best to use a leisure battery, these have heavier plates inside and can be discharged and then recharged without damage (you must charge them up after you use them or store them for any length of time) these batteries are designed for deep cycle discharge and recharge. They will not get dissolved so quickly and can be discharged 60-70% without any damage to the battery and can be run flatter if need be as long as you charge them right away.
Some machines you can use with a DC to DC adaptor, these adaptors allow you to run on 24vDC as well as 12vDC and will cut the power off if the battery gets lower that 30% discharge, they also protect against reversed polarity.
Unfortunately, the manufacturer has decided to stop making these adaptors.
Watch the polarity as a mistake will break the machine, there is a diode inside the machine that will blow an internal fuse if you get it wrong (if you are lucky) or it might do more damage. The fuse is tiny and not something most people could fix as they are usually soldered to the circuit board. Even if you could get one, I would recommend trying to fix it.
-
-
Hi, thanks for all your advice and I did a lot of research but in the end bought both parts compatible with my machine, suffice to say I no longer have to use a noisy inverter and the battery(leisure) lasts longer.
-
-
Some of these machines are 24VDC, such as some of the new Resmed machines, just to make life complicated.
You need a 12Vdc to 24Vdc adaptor. These are £100 + shocking cost for something so simple!
-
Permalink Reply by Graeme Joy on
-
Hi found a USA company that has a large selection of power accessories for CPAP and BIPAP machines, I e-mailed them with the specs on my machine and they confirmed the connection cables I asked for to connect to a car cigar lighter socket and also direct leads to a leisure battery for holidays etc. Contact www.CPAP.com
-
-
Update to previous
-
Permalink Reply by David Bridgen on
-
Sleep2snore said:A thing to watch when using DC power leads is some machines use the centre pin being negative instead of positive as in most cars these days, so be careful when connecting DC power leads.
By putting a bridge rectifier between the input connector and the unit, the polarity of the voltage applied to the input connector becomes irrelevant.
The polarity at the output of the bridge will always be the same.
The bridge could also be mounted as an external adaptor between the unit's connector and the voltage source.
-
-
-
Permalink Reply by Kev Behr on
-
I asked Resmed and got this link from them, still not cheap though.
https://mysleep.resmed.com/GB/en/Sleep-Apnoea/Accessories/AirSense-...
I suppose I could fit a 12v ciggy socket near where I sleep, and plug in one of those coke can type inverters, but as it will be running a motor, would it not need to be pure sine wave.
-
-
That is under debate, they said at a conference that it had to be a pure sine wave, now they have said in America that it does not have to be. Sometimes you just so not know what to believe.
A pure sine wave might be better for you and the machine, but if it is just now and again, I would not worry to much about it.
What I would do is ask ResMed, if they say it is fine to use a non-sine wave one that is fine, but I would get this in an email to cover yourself against damage. If you are not moving every day, I would buy a deep cycle battery, the power supply will cat off when the battery voltage drops below a certain level, but it might be to late to start your engine. Charge it up in tandem with a non-return diode and a charging circuit to keep it topped up.
About
Sleep Apnoea Forum
New to the Sleep Apnoea Forum?
1. Stop by our Sleep Apnoea Welcome Center to introduce yourself to the SleepGuide community.
2. Start a New Topic of Conversation.
3. Post your photos - of yourself, your old CPAP machine, your new CPAP machine, your pet, something about you!
Interested in advertising, have a problem or need to contact us? Click the Report an Issue page.
Latest Activity
"thank you jonathan,i did get the it pack so tried the small and still struggled but i was sat up in bed so will try lying down great suggestion "
"Hi
My first thought is "don't panic"! We're all a bit different, and there are many things that can be tweaked. I took to CPAP therapy like a duck to water, but I've had friends who say they can't cope, but…"
1st time and I’ve failed the mask leak test
Hi everyone, today I received my rental kit - prisma smart max, plus a Philips dreamwear mask which I’ve been wearing unconnected to try and get used to it. I just did a mask fit test using a medium mask and got a constant red/orange leak warning…See More
Are every small CPAP machines any good?
Travel sized, micro - any good?See More
"Ha well it lasted a couple of days but started howling again. But it's a step in the right direction, just needs a bit more work."
"Nope, I just accept that some people's throats tend to close when they sleep, due to a loss of muscle tone during deeper sleep. Back when I was diagnosed, the sleep lab just filmed you whilst you slept, stuck an O2 meter on your finger,…"
"Did anyone tell you exactly what the anatomical issue is, Jonathan?"
"Can't say I know about this."
"So I tore some fabric from one of the filters and glued it over the holes - and it worked!It was dead quiet, and the air was still flowing freely.It was quiet all night then after a few hours a bit of whistling until I gave it a wipe.Vast…"
"Hi Jonathan, well see my nose is blocked a lot, so I mouth breath which really sucks a lot more moisture and makes my mouth dry. So I put humidity on maximum, which makes for condensation at the mask end, which becomes a demonic reed instrument.Now…"
ResMed AirSense 10 getting noisy
HelloI have an NHS issued ResMed AirSense 10 with heated humidifier. In the last couple of weeks, it's developed an annoying noise, when I inhale. It bothers me a little and my partner a lot! I sometimes get problems if the water container in the…See More
"Hi
My first question is why is condensation forming? I very occasionally get some condensation, may be once a month, but I can quickly run a finger around the inside of the mask, and wipe it away. I use a nasal mask, with the humidifier…"
"11K+? Ok that's probably where I should look then :-)"
"Hi John. Thanks for the compliment as I do my best popping on here, but it's difficult due to us now supporting 25k+ patients at the charity. To be honest, the forum is quiet because most people seem to prefer Facebook and forums aren't as…"
"There's some information here, but generally it's very common and likely due to our anatomy."
© 2024 Created by The SleepGuide Crew.
Powered by
