(10-05-2012, 10:16 PM)archangle Wrote: It's 24VDC. Look on the label for the power brick.
There's a third wire, though.
Consensus seems to be that the third wire tells the blower unit which power supply it's attached to, so it knows whether it can power the humidifier and/or heated hose.
Speculation is that it may be "interlocked" to keep you from using a non-ResMed power supply, but nobody's come up with any details.
Has anyone put a voltmeter on it to confirm that two of the wires are positive 12 V and the third wire is neutral?
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