In Panyan University, the phenomenon of skipping classes is very common, and I believe that this old professor should also be able to understand Chu Feiyue's situation.

Sure enough, the old professor nodded knowingly, and actually asked, "So, give the old man a comment, how did you speak?" You can understand it, right? ”

Chu Feiyue nodded, but then shook her head again: "I can understand it, but I feel... Teacher, what you said... It's weird, but it doesn't seem to be like this in reality. ”

"Oh? So what do you feel is wrong? The old professor raised his eyebrows above the frame of his glasses, and asked as if he didn't care.

Chu Feiyue's fingers tapped her chin, pursed her lips and thought for a while, and then said, "Hmm... Seems too idealistic? Even if you ignore the change in resistance caused by the circuit's own heat generation, the impedance generated by the controlled voltage source should at least be considered. And what you said, teacher, such an accurate number is completely unnecessary. In reality, very sophisticated instruments are needed, but such accurate calculations to the decimal point are simply impossible. Isn't the one-step calculation itself wrong? ”

"You're right, but this group of freshmen is still new to circuitry, and it's completely unrealistic for them to take these variables into account. All I can do is get them to accept the ideal circuit model first. ”

As the old professor spoke, he simply sat down on the seat next to Chu Feiyue, opened the conversation box and chatted with him.

"And the controlled voltage source impedance you mentioned, these things can actually be canceled, so it's not a big problem in reality."

"I don't think so, and while it does cancel out, in order to remove that bit of impedance, you need to add a very cumbersome choke element, even bigger than the power supply itself. Now China is not doing very well in this part, and it is not appropriate to add an extra unit ten times the size for the sake of the shortcomings of a small component, both in terms of space and economy. ”

Chu Feiyue shook her head, put her hand in her pocket, and then took out a few electrical components from the ring.

"In fact, it is very easy to solve the impedance here, you only need to add two deflection poles with alternating current, so that the impedance can be disordered, neutralize each other, and minimize the impact. I use it a lot when I'm making things at home, and it's much better than adding that jamming element. ”

As she spoke, Chu Feiyue quickly connected the electrical components in her hand and arranged them into a cross shape. Although it was only a very brief connection, and it was not even fixed, Chu Feiyue felt that this old professor should be understandable.

"This one isn't... Can it be practical? The old professor took off his reading glasses, wiped them on his sleeves and brought them back on, then poked his head over and carefully looked at every small part in front of Chu Feiyue, "Give me a finished product and let me test it." ”

As he spoke, the old professor took out a portable pen multimeter from his pocket and looked at Chu Feiyue expectantly.

Chu Feiyue nodded, took out a small switch again, and then strung them together with wires. Finally, the switch is flipped and the work is done.

Chu Feiyue and the old professor were muttering in the back, they couldn't even take care of the class, and the students sitting in front of them were curious to death, and they all turned around and stretched their necks to look this way, whispering.

"That person isn't from our class, is he?" "Seems so." "What is the teacher doing in the back, is that person from the school's learning department checking the class?" "No, Teacher Gong has been behind for so long, there must be something else." Buzz Buzz Buzz ......

After Chu Feiyue connected the lines, she then owed her ass and moved to the next position, giving up the original position to the old professor. The old professor couldn't wait to pounce on the pile of small parts, leaning on his stomach and carefully touching each component with the multimeter in his hand, observing the subtle changes in the values on it.

"Really... It can really influence, and the theory of electric perturbation is actually successful! Classmate, how did you do it, we have also done this in the real yàn room, but it is not effective from time to time, and there is no practical application value at all. The old professor suddenly threw down the pen multimeter in his hand and turned his head to look at Chu Feiyue urgently.

"Uh... The most important thing is this distance, the coincidence of the damping and the alternating current abrupt magnetic field will form a four-peak eddy current alternating electric field. In order for the AC motor to affect the impedance, it is necessary to converge these four peaks into one point, and the greater the error, the worse the effect, and the required accuracy is very high. Chu Feiyue scratched her face, a little embarrassed by the old man's overly eager expression.

The old professor nodded slowly, looking at the small parts in front of him and trembling with excitement, "Okay, great, great... I thought that this half-completed technology would be buried forever in the file folder of the real yàn room, but I didn't expect to see its finished product today. Little comrade, did you discover this law yourself? ”

"Sort of, the first two years. At that time, I just wanted to make a motor, because the interference of the inductive reactance was too strict, so I thought of such a solution. To be honest, I haven't studied this thing carefully, so it's good to work. ”

Can be used... That's it... Not carefully... Studied...

After chewing these ten words in his mouth, the corners of the old professor's mouth twitched slightly. Nima, the results of your own careful research have completely exploded the cost of Lao Tzu and a bear child from a research institute who worked tirelessly for two weeks to break thousands of real materials, and Lao Tzu is still playing with a ball!

"Ahem, little comrade, you said you were from the first class of the information class, right? Which one is it from? ”

"It's this year, I'm ashamed to say that I've been having trouble since the start of school, and this is my first time in the classroom." Chu Feiyue said a little embarrassed.

"This year's..."The old professor frowned, but instantly stretched out again, "That, you won't have to take basic courses in the future, just follow the old man to graduate school, just study this phenomenon of electric disturbance and magnetism, I will declare a special project for you separately, and the start-up capital will definitely not be less than one million, how about it?" ”

Ha? What is this unfolding? Am I probably pushing open the door of this classroom in the wrong way? How did it suddenly become such a god development?

If you want to say that you want to set up a project or something, it is the ideal of a researcher, but now Chu Feiyue doesn't have the energy to do this. The eldest sister of Xianni in the other world gave Chu Feiyue so much trust and support, and they pressed all the future on him. With such a heavy responsibility, how could he give up his roots and study what electrodes?

It's okay to study it once in a while and relax your mind, but if you make a career out of it, his conscience can't get over it at all.

"I'm sorry... That one... Teacher... I..."

"Oh, it's a hot day, it's still in the classroom, why are you wearing this hat, take it off quickly, how hot it is." As he spoke, the old professor who really thought about his students took off Chu Feiyue's hat.

The coiled hair that had been imprisoned in the hat instantly spread out and fell like a waterfall. The old professor's eyes opened in an instant.

It's not just Chu Feiyue who was stunned. Even the students sitting in the front row were stunned along with their little friends. The whole classroom was instantly silent at all.

"I'm the last goddess to come to power!"

Suddenly, somewhere in the classroom, there was a wolf howl that raised its throat.

PS: This chapter is shorter, because I think it's good to break it here.

PSS: Prepare well for tomorrow's big seal.