I am using CAT6 wire to pass 0-3.3v data and a small amount of power.
The wire has 4 twisted pairs.
I want to pass 4 signals and +5VDC.
I plan to pair the following:
signal1 with ground
signal2 with ground
signal3 with ground
signal4 with +5vdc.
The power supply has large capacity. (low internal resistance, lots of capacitance and no ripple.)
signal4 is 0-3.3v at 1000Hz square wave over ~2meters.
Is it bad practice to share a twisted pair with a signal and +V?
If so, why?
I am developing a PCB and I plan to add footprints on each end to couple the +v to ground with an extra capacitor if needed.
Thanks

 

As long as they are all independent twisted pairs it is often done.
Max.

 

As long as they are all independent twisted pairs it is often done.
Max.

Thanks very much.