I'm building a 24 volt system in my van. My CPAP machine runs on 120vac, but there's a DC converter available (for $90!) with a cigarette lighter plug "65 watt DC DC converter." It says the plug can be used in 12 or 24 volt systems. Reading the specs, the adapter has a 12A/250V fuse, input is 12|24V at 8|4A, output is 24V at 2.71A. Must be used in negative grounded systems only.
Why do I need this thing? Can't I just make a wire with a 12 amp fuse to plug it directly into my 24 volt system? Or is the adapter also protecting the device from pulling too much current?
Note that I don't want to fry my $1000 cpap so if I need the cord I need it, I just want to understand why.
Why do I need this thing? Can't I just make a wire with a 12 amp fuse to plug it directly into my 24 volt system? Or is the adapter also protecting the device from pulling too much current?
Note that I don't want to fry my $1000 cpap so if I need the cord I need it, I just want to understand why.