+- Apnea Board Forum - CPAP | Sleep Apnea (https://www.apneaboard.com/forums)
+-- Forum: Public Area (https://www.apneaboard.com/forums/Forum-Public-Area)
+--- Forum: Main Apnea Board Forum (https://www.apneaboard.com/forums/Forum-Main-Apnea-Board-Forum)
+--- Thread: Polarity of Pilot-24 Lite DC output? (/Thread-Polarity-of-Pilot-24-Lite-DC-output)
Pages:
1
2
Polarity of Pilot-24 Lite DC output? - psteckler - 06-01-2019
I'd like to find out the polarity of the DC output from the Medistrom Pilot-24 Lite battery. That is, is it center positive, or center negative?
RE: Polarity of Pilot-24 Lite DC output? - kotaKat - 06-04-2019
As soon as I have my Dreamstation Go adapter, I'll have that info for you. I already know which pins on the 8-pin on the DS side are ground, so I can tone out the DC jack end for you in a couple days.
RE: Polarity of Pilot-24 Lite DC output? - psteckler - 06-04-2019
(06-04-2019, 09:14 AM)kotaKat Wrote: As soon as I have my Dreamstation Go adapter, I'll have that info for you. I already know which pins on the 8-pin on the DS side are ground, so I can tone out the DC jack end for you in a couple days.
Great, let me know what you learn.
RE: Polarity of Pilot-24 Lite DC output? - kotaKat - 06-05-2019
Center positive, outer negative. Just toned the cable (and scored the confirmation of the Molex Micro-Fit pinout on the Dreamstation Go).
RE: Polarity of Pilot-24 Lite DC output? - psteckler - 06-05-2019
(06-05-2019, 05:05 PM)kotaKat Wrote: Center positive, outer negative. Just toned the cable (and scored the confirmation of the Molex Micro-Fit pinout on the Dreamstation Go).
Great, thanks!
I've got an $800 Resmed AirMini on the line here. You're certain as certain can be? :-)
RE: Polarity of Pilot-24 Lite DC output? - kotaKat - 06-05-2019
I just put a $1k Dreamstation Go on the line myself. You're good. Center positive, outer negative. More on this project on my thread in a bit.
RE: Polarity of Pilot-24 Lite DC output? - psteckler - 06-05-2019
(06-05-2019, 06:27 PM)kotaKat Wrote: I just put a $1k Dreamstation Go on the line myself. You're good. Center positive, outer negative. More on this project on my thread in a bit.
I like to hear confidence, thanks so much!
I'm building a power supply for the Resmed, hope it to have it built soon, and will report here.
RE: Polarity of Pilot-24 Lite DC output? - Sleepster - 06-05-2019
(06-05-2019, 06:43 PM)psteckler Wrote: I'm building a power supply for the Resmed, hope it to have it built soon, and will report here.
There was an in-depth thread on this topic somewhere. In addition to the 24 volts DC, there's another conductor used to send a proprietary signal. Somebody figured out how to do it, though, IIRC.
RE: Polarity of Pilot-24 Lite DC output? - psteckler - 06-05-2019
(06-05-2019, 07:39 PM)Sleepster Wrote: There was an in-depth thread on this topic somewhere. In addition to the 24 volts DC, there's another conductor used to send a proprietary signal. Somebody figured out how to do it, though, IIRC.
I'm following an example on another bulletin board. A fellow there removed the plug from the Resmed cable, and connected only positive and negative wires to a boost module, no other signal or voltage involved.
I'm planning to keep the plug, and use a panel jack to connect to the module (hence the need to know polarity). The plug appears to be an ordinary 5.5x2.5mm barrel plug.
RE: Polarity of Pilot-24 Lite DC output? - kotaKat - 06-05-2019
Even the Medistrom cable offered for the AirMini most likely is just the 24VDC only. None of the other 4 pins on the DSGO connector are connected on mine, just two ground and two +24V.