I'm going to use a RS485 modbus connection which requires a twisted pair. Now I also need power, that will be a 5V line and a ground. The distance will be about 3 meters max. Can i use a twisted pair for the 5V and gnd as well? Or will that result in a voltage drop?
Electronic – use a twisted pair for 5V and ground
5vrs485twisted-pairvoltagevoltage measurement
Related Topic
- Electronic – Will RS-485 work over non-twisted pair
- Electronic – Shielded twisted pair balanced transmission line implementation
- Electronic – 3 wire signal to 4 core shielded twisted pair
- Electrical – Isolated Modbus (RS485) ground and UART noise
- Electronic – Using RS485 over CAT5e Foiled Twisted Pair (FTP)
- Cable selection and wiring for RS485 communication
Best Answer
There are a couple things to take note of to know if this will work:
If:
$$I_p \times R_c \leq V_d$$
Then you're good to go.