sequential (71) RJ45 (Protocol) the direction of current flow
https://wodewangzhishime.blogspot.com/2023/02/httpswodewangzhishime.html?m=1 . Ref: https://chihaukam.blogspot.com/2024/12/let-me-tell-you-real-story.html?m=1 . . . . John: The 1st picture is an operational amplifier. 4.5 V- 0.5 v = 4 V. Me: Ok. John : Now, see the 2nd picture. (-0.5v) - (-4.5v) = 4 V. . Me: Yes, it's 4 V as well. But, the direction of current flow is different. . . John: See the 2nd picture. (Rd+) Should connect to 3. However, if I let (RD +) connect to 6, the difference between them is the same.