[The fat man goes crazy, the fat man goes crazy, it breaks out, please subscribe, please reward, please give me a monthly ticket. ≤≤Little≤Say,】

...

Liu Chen took the chalk and said loudly: "In the circuit analysis of the previous junior and high school learning, whether it is parallel, series, or parallel, and then series in parallel and then series, the connection method of this circuit is generally very intuitive and easy to imagine. The very different thing about our learning [Circuit Theory] is that many complex circuits cannot be imagined, and they can only be rationally analyzed through kcl and kvl and various transformations."

Use chalk to mark abcdefgh on each square connection for easy explanation, saying: "The resistance connection method of such a space is obviously no longer tangled with the relationship between series or parallel connection. We need to introduce a more important idea. If a plane is illusioned in this diagonal line and divided into two pieces, then it is clear that the two sides after the division are symmetrical left and right. Everyone should be very familiar with the bridge, right?"

Ling'er was about to get up and fight side by side with Liu Chen, but when he saw him calm and calm, he felt that he could solve the problem and turned to look at him.

Liu Chen said that he drew a simple bridge on the blackboard. The so-called bridge is composed of four resistors, which are connected in series and then parallel. As long as the two sides are in equal proportion, the series point is the equal potential point. No matter whether the two points are short-circuited, broken or connected to arbitrarily blocked resistors, it has no effect on the bridge because there will be no current flowing through it at all.

This is a very important idea in [Circuit Theory] to analyze high-difficulty and complex circuits.

"Now everyone should understand the concept of equality, right?" Liu Chen said this, and the students who were waiting to watch the fun obediently closed their mouths, but recorded them in their notes, telling them intuition that the method Liu Chen said was very effective, and the explanation was very easy to understand and had a high-level perspective.

Especially Zhuo Ling's beautiful eyes also looked at Liu Chen, and recorded it carefully, shocked in his heart that he had even studied the circuit so deeply.

"So let's look back at this simplified cube resistor group. Because all resistance values ​​are r. Therefore, dbh three-point equipotential and ceg three-point equipotential, we can add a short circuit between the equipotentials of the two groups, which will not affect the connection relationship anyway. In this way, it looks clearer. Can you understand?"

Many students still shook their heads.

Liu Chen said helplessly: "Okay, then we'll put it on the plane and look at it more clearly." As he said that, he drew the floor plan according to the connection relationship, which made it clearer and clearer. After adding the short-circuit connection line, it became very simple to simplify.

"In this way, these six resistors are in parallel, these three resistors are in parallel, and these three resistors are also in parallel, and then connected in series, it is easy to find the result, 5r/6, and then parallel to the following r, the entire simplification result is 5r/11. In fact, this question can be further deepened."

Speaking of this, Liu Chen thought it could be expanded and drew several simplified situations of cube resistance. There are resistances on one side of the diagonal line, and find the resistances at two points on the diagonal line on the other side, and there are no resistances on the diagonal line to find the resistances at two adjacent points. He even talked about how to simplify when all the resistances are not exactly the same.

Liu Chen talked about this question for half an hour and explained eight situations. The students in the audience were listening carefully. They were all super academic masters, and Liu Chen explained it easily and easily understood. These situations basically completely cover this type of resistance simplification. It can be said that this half hour of listening is enough to make them able to do it when facing such questions. You must know that this type of question is almost a must-take every year, and even a question must be included in the graduate entrance examination.

Tang Jie listened to the lectures until the get out of class was over. To be honest, as an associate professor, he was very busy with projects, so he didn't have time to summarize so comprehensively. When he heard this, he felt that he had gained a lot. He couldn't help but look at Liu Chen in confusion. This guy could not be a sophomore.

The bell for the end of get out of class rang, and everyone felt that Liu Chen had been talking for so long.

For top students, nothing is happier than acquiring knowledge. Whether you have any goods in your stomach is something that you can't pretend.

Tang Jie was the first to applaud, and the students also applauded. It was really wonderful. Tang Jie's face calmed down and he smiled and said, "This classmate, you can indeed see your beautiful girlfriend in class, but you should also take into account the feelings of other students. Next time, sit together, it looks convenient. Haha, classmates, let's get off the get out of class."

"Well, you must carefully consider Teacher Tang's suggestions." Liu Chen responded with a smile, feeling that Teacher Tang is quite interesting, open and upright, upright and generous.

"Haha, the students will benefit a lot, the get out of class will be over."

Liu Chen was about to go down, Tang Jie grabbed him and said with a smile: "You guy has a very high level of circuit analysis."

"Sorry, Teacher Tang, I am not a sophomore. I accidentally ran to your class and caused you trouble. If you can analyze such a simple circuit, it would not be possible to explain your level."

Tang Jie just thought that this guy could not be a sophomore, which was too amazing. He said sincerely: "Even if you are a freshman, it is not easy to reach your level. Are you still going to have something to do later? If you can't come to my lab, I'll talk to you."

Faced with Teacher Tang's longing eyes, Liu Chen was embarrassed to refuse and nodded, "Okay then."

"Okay, my laboratory is in the 2207th building of the Electrical Institute. You can send your girlfriend to your girlfriend first. Anyway, I'm always in the office later, so there's no hurry." Tang Jie glanced at Zhuoling in the front row and said with a smile.

In school, super academic giants can always receive likes from teachers.

Zhuo Ling looked at Liu Chen with a smile, smiling without saying a word. Yin Jun stood beside her, obviously preparing to treat the light bulb to the end and look at him vigilantly.

Liu Chen looked at Ling'er gently. After a few days of sight, she became more bright and charming. Her white and tender face was slightly red, and she was still shy. Her flawless skin, full of collagen, and black hair were tied behind her ears, and her delicate facial features were even more eye-catching.

"There is no class for the next class, please send me to the library." Ling'er said generously.

Liu Chen nodded with a smile, and Yin Jun was also following him. Liu Chen smiled at him and said, "Classmate, are you going to the library too?"

Zhuo Ling said suspiciously: "Aren't you going to the gym to work?"

Yin Jun gritted his teeth and said goodbye.

He was obviously unwilling to accept his heart. He had been carefully hiding his admiration for Zhuoling, looking forward to moistening things and touching the goddess silently, and finally won the beauty's return. He clenched his fists. No matter what, he was still willing to wait, but his emotions were a little out of control.
Chapter completed!