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Maxion • today at 7:13 AM • 1 reply • view on HN

Mainly thinking 48V as that is already a standard in the marine and automotive world. AFAIK 120V DC is not a commonly used standard ? (Maybe in aviation?)


Replies

atoav • today at 8:00 AM

Most modern aircraft have a 400V 360-800Hz three-phase grid, as this allows thinner (read:lighter) conductors. There are some high voltage DC rails on some plains in the range 270VDC or ±270VDC.

On the usage side for instrumentation, avionics etc. it is usually 28 VDC.