Re: [EVDL] 48 volts - (was: Cybertruck)

2024-10-07 Thread Lawrence Winiarski via EV
>That is why it is supporting the move to higher voltage, to have smart >peripherals on a bus. Instead of trying to run half a dozen tiny wires to .> each lamp holder, it gets a power wire and a communication wire run to all, and each listens to their own address, so no tiny wires  needed... Mayb

Re: [EVDL] 48 volts - (was: Cybertruck)

2024-10-06 Thread Cor van de Water via EV
That is why it is supporting the move to higher voltage, to have smart peripherals on a bus. Instead of trying to run half a dozen tiny wires to each lamp holder, it gets a power wire and a communication wire run to all, and each listens to their own address, so no tiny wires needed... On Sun, Oct

Re: [EVDL] 48 volts - (was: Cybertruck)

2024-10-06 Thread Lawrence Winiarski via EV
Good example and shows the same power loss, but I think carrying it a bit further, you also need the wire to be able to deal with the power loss.    In other words resistors are not just rated on ohms, but also watts. So it's not just about "efficiency" in terms of power loss, but it's als

Re: [EVDL] 48 volts - (was: Cybertruck)

2024-10-06 Thread (-Phil-) via EV
The problem is you need a minimum conductor size for low-power circuits just to ensure mechanical stability of the wire. I've seen many OEMs going thinner and thinner on signal wires, and they are super easy to break if you yank on them at connectors, etc. Be very careful disconnecting connecto

Re: [EVDL] 48 volts - (was: Cybertruck)

2024-10-05 Thread Cor van de Water via EV
Note that if you want to save on copper and are only interested in delivering the same power with the same percentage of wire losses, then going 4 times up in voltages allows you 16 (!) times smaller wire surface area, because current is 1/4 but also 4 Volt loss in a 48V system is the same percenta

Re: [EVDL] 48 volts - (was: Cybertruck)

2024-10-05 Thread Lee Hart via EV
>> On aircraft, 28 volts (24 volts) has been the standard low voltage forever. >> It is the standard on specialized military vehicles and equipment as well. Also in large trucks and buses. > "42 volts" is the threshold for "low voltage" in the US National Electrical > Code, but as I recall, that

[EVDL] 48 volts - (was: Cybertruck)

2024-10-05 Thread Bill Dube via EV
On aircraft, 28 volts (24 volts) has been the standard low voltage forever. It is the standard on specialized military vehicles and equipment as well. (Yes, you can find 12 volt systems, but only in tiny airplanes and small OEM type military vehicles.) "42 volts" is the threshold for "low volt