[항공] 커넥터에서의 TX/RX 및 RTN/GND 차이점이 무엇인지?

(사실 항공에 관련된 상식은 아니고, 보편적인 HW 상식이다)

DC 전원 공급의 맥락에서, GND는 Ground를 의미하고, RTN은 Return을 의미한다. 각각의 차이는?

 

1. GND (Ground)

 

1) 정의

- 일반적으로 GND는 전자 회로에서 전압이 측정되는 참고 포인트로 쓰인다.

- 회로에서 전압이 0인 포인트로 여겨진다.

 

2) 기능

- 전류의 공통적인 반환통로 역할을 수행하고 safety reference를 제공

- 많은 경우, 고전압 충격과 노이즈를 방지하기 위해서 물리적 접지에 연결되곤 한다

 

3) 종류

- Signal Ground(Low-Voltage Signal) / Power Ground(High-Current Path)

 

2. RTN (Return)

 

1) 정의

- RTN specifically refers to the return path for current back to the power supply. It represents the negative or low side of the power supply circuit.

- 

 

 

2) 기능

- RTN is used to complete the electrical circuit by providing a path for current to return to the power source after powering a load. It is often associated with the negative terminal of a power supply.

- 

 

3. 주요 차이점

 

1)

- GND : GND is a reference point for voltage measurements and can be a safety ground.
- RTN is specifically the path for current returning to the power source.

- RTN : 

 

2)

- GND : GND is often at a fixed potential (0V), but not always tied to earth ground.
- RTN can be at the same potential as GND in some systems, but in others, it might float or have a different potential.

- RTN : 

 

3) 

1. Usage Context:
   - GND is commonly used in signal and power circuits.
   - RTN is more frequently used in discussions about power supply circuits and current return paths.

- GND :

- RTN : 

 

 

4. 한줄요약

-  While GND and RTN can often serve similar roles in a circuit, understanding their distinct functions and contexts is important for designing and troubleshooting electrical systems. Always refer to specific circuit designs and documentation for precise definitions in a given application.