OR.. come to the January teleconference with awake.truckersforacause.com...
The topic will be power supplies for CPAP used in the truck.
We will be discussing pure sine wave versus modified sine wave invertors and how using the wrong kind of invertor can mess up your CPAP.
I would rather spend a couple hundred for the right kind of invertor than spend $ 1,300-1,500 for a new CPAP and be stranded when the blower motor burns out in nowhere KY.... been there done that and learned my lesson.