Re:There's something off about LED bulbs
by xpe on Thursday March 30, 2023 @09:01PM
(#35380974)
The usual counterargument is: voltage drop can become a problem. Trying to use one big power supply and use DC as your only distribution mechanism probably isn't a good idea.
But choosing a DC system for part of the house can make a lot of sense.
For one residential new construction room, it can be practical to have one shared power supply rather than one per LED. Say you have a 12 V, 5 A DC power supply. Using a star wiring topology, this can serve 10 lights (at 500 mA) fine with 16 AWG.
Re:There's something off about LED bulbs
by djbusby on Thursday March 30, 2023 @11:07PM
(#35382000)
But how far can the power go before wire resistance causes too much Vdrop? Maybe one good transformer+rectifier per room? AC to the room and DC in the room. Those DC runs would be <5m each.
But choosing a DC system for part of the house can make a lot of sense.
For one residential new construction room, it can be practical to have one shared power supply rather than one per LED. Say you have a 12 V, 5 A DC power supply. Using a star wiring topology, this can serve 10 lights (at 500 mA) fine with 16 AWG.