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+--- Thread: PR System One REMstar Auto Power Supply Help. (/Thread-PR-System-One-REMstar-Auto-Power-Supply-Help)
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RE: PR System One REMstar Auto Power Supply Help. - archangle - 03-10-2012
I think all Respironics machines use the same plug and polarity, at least from the REMstar legacy models ca. 2004.
The ResMed S8 machines use the same plug, but the opposite polarity, so be really careful if you have both types or get "unofficial" DC cables.
RE: PR System One REMstar Auto Power Supply Help. - The Happy Dreamer - 03-10-2012
(03-10-2012, 07:56 PM)archangle Wrote: I think all Respironics machines use the same plug and polarity, at least from the REMstar legacy models ca. 2004.
The ResMed S8 machines use the same plug, but the opposite polarity, so be really careful if you have both types or get "unofficial" DC cables.
I did find out for sure that the M Series and PR System One REMstar power adapters are not interchangeable, not sure why yet.
RE: PR System One REMstar Auto Power Supply Help. - Sleepster - 03-10-2012
(03-10-2012, 08:44 PM)The Happy Dreamer Wrote: I did find out for sure that the M Series and PR System One REMstar power adapters are not interchangeable, not sure why yet.I think it's because some of the PRS1 machines, under some conditions such as higher pressure or humidity settings, draw more current. And maybe the older M Series power supplies are rated at a lower current?
RE: PR System One REMstar Auto Power Supply Help. - oldteddybear - 03-13-2012
The electrical cable between the brick and the xPAP will always have at least 2 wires, The wires that look like they have two side by side have separate wires. This type is generally more electrically noisy (radio frequency type noise) and I find better in a fixed location than for a portable device (floor lamp for example). The cables that look like a single wire have the power wire in the middle and the ground wire (normally) surrounding it with a cover over top. Due to its increased size it is less likely to be bent flat and it generally has a longer life it is used in a portable device that will be bent and wrapped to go back in the travel bag. The colour of the center ring can mean many different things based on the manufacturer, but is most often to differentiate the different sizes of connector. The polarity indication is normally noted on the brick allong with the voltage and current ratings of the input and output. I was looking at one of the manufactures sites and they appeared to originally have two different power supplies for their units, one for the xPAP only and a different one for xPAP and humidifier. They appear to have stopped supplying the xPAP only power supply as they fail when the owner upgrades to the humidifier and assumed the power supply would still work.