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  https://wodewangzhishime.blogspot.com/2024/02/blog-post.html . . Ref:  https://wodewangzhishime.blogspot.com/2024/02/blog-post.html  . . . . . John: The first and second picture is same. Me: OK. John: Look at the third picture. Me: OK. . John: Parallel in out line is a branch from the clock line of RJ 45. Me: Correct. ( Parallel in out line )  is a branch of the clock line of RJ45. John: Hacker hack the clock line of RJ 45, and , let the circuit  beocme like this . while (RJ45 is running  )  { Clock line of RJ45 = up cycle. Parallel in or out line = down cycle. }

  https://wodewangzhishime.blogspot.com/2023/12/blog-post_14.html   . Ref:  https://wodewangzhishime.blogspot.com/2023/12/blog-post_14.html . . . Me: There're 4 pictures above. . We mention the 1st picture. There is a full wave rectifier. . .When the smoothing capacitor discharge, the gap between the Up and Down cycle is filled. . Consequently, the wave-form of the direct current become smooth. . John: OK. . Me: Now, we look at the 2nd picture. . Case 1. high frequency  <--- The curve is very smooth. . The discharge of the smoothing capacitor can easily fill the gap. . Case 2. middle frequency <--- The curve isn't smooth. . The discharge of the smoothing capacitor can hardly fill the gap. . Case 3. low frequency <--- The curve can't continue. . . The direct current is broken. . The discharge of the smoothing capacitor can't fill the gap. . John: Now, we look at the 2nd picture. . . 1) In direct current, if the frequency is high, the discharge of the smoothi...