I was wondering if anyone knows if standard 120 VAC-rated wall wart power supplies can be sourced with 125 VDC instead of 120 VAC? Virtually all of these types of power supplies I see (think power supply for a wireless phone, USB cellular phone charger, etc.) indicate 100-240 VAC as the supply voltage, but I was wondering if anyone knows if these will actually work with an equivalent magnitude of DC voltage instead of AC? The application I'm using does not involve any AC voltage, therefore, all devices are fed from a 125 VDC battery. I know I can test this to see if the power supply would work with a DC supply voltage instead of an AC supply voltage, but I was wondering if, electrically, standard switching wall wart power supplies simply work out of the box this way? I have searched Google high and low and cannot find anyone who has written about this. Of course, this is a very unusual application, so it probably hasn't been done that many times, but figured if anyone know, it would definitely be someone on this forum! :)
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