Pulsation from small convereter

[Al Scudder]

Ralph, I had a small (2 plug) converter (DC to AC) hook up to run my CPAP machine. I got the idea from you a few years back. I only use the device when I am not hooked up to AC power
The problem I have is that the CPAP pulsates when running on the converter. And I have replaced 1 CPAP after 4 days boondocking.

As you can imagine if your breathing is not at the same speed as the pulse ...you wake up. The converter is hook up directly to the engine batteries in the bay. What do you think, a bad converter?

Scooter
2000 XL Ocqueoc, MI