I'm looking at various power supplies and they all come with different output cables.
They also have different OUTPUT
charts, for example:
What I'm wondering:
What are these output columns are indicating? Does it mean:
- There is 1 cable with
3.3v
output that can provide 17 amps, - Together with another cable which can supply
5V
at 13 amps, Together with another cable at
12V
at 15 amps?So totally 3 cable outputs with 17, 13 and 15 amp capacity each?
- There is 1 cable with
How do I know which cable supplies at what volts / amps?
What if cable number does not match column number?
What do negative ones indicate, such as
-5v
or-12v
?
Serial
connection has+
and-
voltages also its not unsual. To understand the specific reason would require you to study electrical engineering. If I had to sum it up in a single sentence. Some digital logic circuits will use a negative voltage to compare the input voltage to the postive voltage. There also is the ATX standard which require it and in addition for serial connections like RS-232 for example.