Questions about the properties of digital signal:

[maki]

Questions about digital signal properties:
1)can digital signal be transmitted together with powresupply electricity using the same wire/cabel?
2)Is there any digital-signal based wire-protocol that allows multiple branches of wires who transmitt digital signal to meet in some kind of "knut" while another wire takes safely the sum of incomming signals away from the "knut", toward whatever processing unit or another "knut"?
3)I am interesting if there is a cheap protocol that allows multiple "knuts" and multiple branches as described above.
Thanks

[maki]

[aciddose]

1) yes
2) no
3) usb (cheap), ethernet (less cheap)

[maki]

1) yes
2) no
3) usb (cheap), ethernet (less cheap)

1)has that thing the name?

[C00kie]

That's BPL: http://en.wikipedia.org/wiki/Broadband_ ... e_Internet

[Muzik 4 Machines]

roland does the RSS snake, but no power, only 48 chanels of audio over cat5 cable, using off the shelf GBe switches

[aciddose]

"1)has that thing the name?"

in order to transmit a signal across a power supply line, you simply have to use capacitive coupling on an unregulated line. the line can carry many signals depending upon it's bandwidth.

[maki]

thanks!