Connecting a CPAP machine to a battery?
I have been prescribed a CPAP machine for Obstructive Sleep Apnea. How do I run this while traveling if I don't have a generator or battery? I am thinking of buying a portable jump starter like thi...
Forum Discussion
Bumpyroad wrote:
is that perhaps that cylindrical thingy that I note in the wire that I never knew what it was?
bumpy
Yes.
Many thanks to the explanation David provided right after your post on what the thing inside of that plastic cylinder (a bead/piece of ferrite encircling the wire) in the CPAP machine's power cable does.
I used the term "choke", which is another form of electrical circuit structure that does the same thing. The ferrite bead method is a less expensive and usually physically smaller way to accomplish the same thing - electrically "choking down" the current flow path such that high frequency disturbances can't come through - which can damage, or at a minimum interfer with, sensitive electrical circuits.
