After a pause, Su Ping shook his head again and said:

"But...... Even with the maximum power of 3,500 watts that this socket can support, it is difficult to make Lao Chao and this wire 'parallel' without saying a word and be instantly stunned.

Generally speaking, in dry conditions, the voltage difference between the two ends of the human body access circuit is basically safe if it does not exceed 24 volts, of course, the actual situation is quite complicated, and there are many influencing factors in all aspects.

However, the voltage difference generated by such a small distance of the conductor is too small, unless the physical quantity of current is directly abandoned, and the voltage and line resistance are increased to an outrageous degree.

But in that case, regardless of the "wire" material, just look at the value of the resistance itself, this so-called circuit can also be directly regarded as a "open circuit", how can it hurt people?

The maximum power supported by this socket is only 3,500 watts, and the resistance at this power can be regarded as an insulator when the resistance reaches a certain level. If this power threshold is exceeded, a protection mechanism will be triggered that will cause tripping.

To put it simply, just such a bare wire is theoretically not enough to produce the conditions for Lao Chao to pass out instantly when he touches it. Lao Chao was in a coma, there should be another reason. ”

Wang Zhao heard Su Ping's words, and vaguely felt that what he said was wrong, but he couldn't say it, so he had to nod.

After correcting Wang Zhao, Su Ping decided to wait and see what happened, and wait for the results of the investigation to come out.

Even if the conditions of the county bureau are a little worse, at least the technical departments such as forensics and trace examination are still professional, and they can analyze something. At least you can feel the effect of that boxy and strange electrical appliance.

It's really not good, it's a big deal to ask the detachment to send someone over.

Of course, although Su Ping's focus is on the scene, someone has also gone to the monitoring room to adjust the surveillance video, and many criminal police officers have been arranged to go out and visit the neighborhood carefully.

Even the police dogs were transferred by the deputy team and the instructor to try to find out if the suspect could be locked through the clue of smell.

Well, Captain Chao was in a coma and was treated, and the team was temporarily led and commanded by the deputy captain. As for the instructors, they also came running in the name of helping.

From this, it can be seen that this instructor does not have a very strong presence in the brigade. However, this is not surprising, the public security and the army are still different.

Nominally, it seems that he is also a "double leader", and the detachment leader is at the same level as Zhengwei, the captain and the instructor, and the squadron leader and instructor, but in fact, the ideological and political chief has no sense of existence in his daily work at all, and his voice may not even be as good as the deputy captain.

Looking at the busy people, Qi Yuan thought as above, and unconsciously held the handle of the electric baton with one hand.

So many colleagues didn't give him much security, but made him a little square and not very down-to-earth.

There was no way, Su Ping never shied away from him when he was discussing, so he knew that the deputy team and instructor in front of him, who were responsible for directing the big guys to complete Su Ping's orders, might ......

And Su Ping's instructions to him were to leave it alone and just stand next to him.

An hour later.

In addition to more than 10 special police officers who were fully armed with live ammunition, as well as forensics, trace examination, graphic investigation and other professionals, 27 criminal policemen from the second squadron of the serious crime brigade were all transferred by Su Ping.

Such a big battle, it is the first time Qi Yuan has seen it since he joined the company.

Qi Yuan is not very familiar with them, after all, he mainly stays in the first squadron, and to be more specific, he is the group that Brother Song is responsible for.

And the second squadron, who is relatively familiar with Ning Yuke, the only female policeman in the second squadron. Because she is mainly responsible for the internal work, Qi Yuan has dealt with her a few times, but she has never said a few words in total.

It's just that I didn't expect her to come up with her this time.

The second squadron was divided into four groups, and Su Ping quickly arranged the general tasks for them, and the more detailed ones were assigned by the leaders of each group.

The site investigation continues.

Then Yan Zhongxin touched Su Ping with his elbow and asked, "How do you say it?" It's been so long, haven't the forensic doctors in the brigade even finished the on-site autopsy? ”

"It's done." Su Ping said softly: "There is no technical difficulty in this regard, and it will be completed quickly." Well, it is preliminarily speculated that the three murderers, armed with daggers of uniform style, fought with the victim's family for a while and then killed them, and the time of death was about four o'clock in the morning today.

There is also a doubt...... Among the deceased is an eleven-year-old boy,It is the son of the missing colleague Tong Haojie,He has his own room,After the scene investigation, it was also determined that he died in his bedroom,But his body was transferred to the room of Tong Haojie's parents by the murderer。 We analyzed it, but we didn't guess the murderer. ”

Yan Zhongxin frowned, and after a moment, asked, "Do you need my help with the autopsy work?" ”

"Not needed for the time being, but not guaranteed afterward." Su Ping's expression was serious, he thought for a while, and then said, "If you can, Lao Yan, you go to the county hospital and ask the specific reason why the two brothers are in a coma." The reason for Lao Chao's coma came out, it was indeed an electric shock, and the other two have no news yet.

Well, to be on the safe side, I'm asking the two SWAT brothers to protect you. ”

Yan Zhongxin should say hello.

Probably the situation, he knew almost everything on the way here, but he didn't see anyone, and he couldn't tell how Captain Chao was unconscious.

After thinking about it, he asked again: "Do you know what the suspected transformer equipment is?" ”

"That's the blame." Su Ping sighed: "That thing is really a transformer, with a rated power of 3,200 watts, an output voltage of 4,000 volts, and a rated current of 0.8 amps."

The wire is also a special material, the resistivity is quite large, the total resistance is calculated to be 5,000 ohms, and the whole circuit can be regarded as a pure resistance circuit.

In addition, a switch was placed inside, and it is speculated that the device was activated after Lao Chao entered the room, and then Lao Chao was electrocuted, and the leakage protector instantly cut off the circuit. Therefore, the circuit does not take a long time to re-energize, and the heat production is not large. ”

"What's so strange about that?" Yan Zhongxin blinked.

Su Ping frowned and said: "Lao Chao was electrocuted unconscious, combined with the location of the wires, he should only have a small part of the wires when he was electrocuted, and there was only one wire, which can be regarded as him being connected in parallel on this line."

With such a small length, the resistivity of the wire, and the voltage of the 'power supply', the voltage difference produced is actually very small, how could Lao Chao be electrocuted? ”

Yan Zhongxin blinked again, his face a little strange.

"What's wrong?" Su Ping asked.

"That ......" Yan Zhongxin raised his forehead and asked a little puzzled: "You know these principles, so why don't you know about single-wire electric shock?" ”

Su Ping: (⊙o⊙)...