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Peng Huading, who understood the situation in front of him, could only smile helplessly, simply ignored the people around him, and looked at the circuit board carefully.

Although the circuit board in his hand didn't look advanced, he could see at a glance that the cause of the failure was that the lightning strike had damaged the power management chip on the control board, but he still felt a little at a loss to start without measuring tools at hand.

Looking at the circuit board, he only knew which of the management chip pins damaged by lightning were the power input pins, ground pins, and number jù clearing pins, while the other input pins and output pins were not clear, and their respective parameters were even more unknown.

He looked and looked, constantly recalling similar chips in his mind, and shook his head in annoyance from time to time.

Li Yuxin next to him looked at him with a sneer, and asked with "concern": "Salesman Peng, you can't help it, right?" ”

Peng Huading ignored him, but took out his mobile phone and made a call.

"Hello. Who are you? The phone rang, and a voice came from inside.

Peng Huading hurriedly said: "Hello Zhao Gong, I am Peng Huading from Yunfeng Technology. I'd like to ask you something, is that okay? ”

Li Yuxin, who was standing next to Peng Huading, was stunned: "Isn't this kid from Huakang Company?" Why is Yunfeng Technology again? What is Yunfeng Technology? ”

"Peng Huading?" The person on the other side repeated, and soon laughed, obviously embarrassed that he had almost forgotten about the company's customers. He said, "Hello, Boss Peng. Is there anything wrong with you? ”

The Zhao Gong who spoke to Peng Huading was the engineer responsible for installing the automatic production line for Peng Huading, and Peng Huading heard him say that there was a technician in their company who was very good at power management chips.

Peng Huading said: "Zhao Gong." I would like to ask the engineer in your company who is very knowledgeable about power management chips and ask him a question. Please tell him. Let's see if he can help me with this, I'm in a hurry here. ”

Engineer Zhao hurriedly said: "This is a trivial matter, I'll call him immediately, you wait a minute." I asked him to call you. ”

Within a few minutes, a landline from the provincial capital of Kaibu City called Peng Huading's mobile phone.

After he said hello politely, the other party reported to himself and said, "Hello." You're Peng Huading Peng's boss, right? I'm Zhuang Diping, I heard Mr. Zhao say that you have something to do with me? ”

Peng Huading hurriedly said: "Hello Zhuang Gong, I am Peng Huading. You can just call me Xiao Peng. I would like to ask a question about the technical parameters of a power management chip, and see if there is a commonly used chip that can replace it. ”

The other party didn't expect that Peng Huading was not asking about the company's products, but he still asked Peng Huading to report the model of the chip.

After listening to Peng Huading's report on the past chip models, the other party said: "I really haven't touched this model of chip." It's a new dedicated chip, right? You wait a minute, I'll check. ”

Within a few minutes, the other party found the relevant number jù. said: "Our company has not bought this chip. I checked its parameters from foreign websites, and I couldn't find a chip that could replace it for a while. It has two more voltage output pins than similar chips we commonly use, and outputs two different voltages, and it also requires a special frequency input signal ......, and the current tolerance value of one of the pins is also much larger than the commonly used chip value, at least twice as large. ”

Peng Huading said in his heart: Fortunately, I asked. Otherwise, you are likely to fall into the trap set by the manufacturer. Although he has seen many of these traps, they are all set up by manufacturers to prevent others from copying, but if they don't know in advance, they are likely to be negligent.

He breathed a sigh of relief and said to Zhuang Diping: "Mr. Zhuang, please report to me a few voltage and current parameters of the output foot." ”

Soon. Zhuang Diping reported the parameters of several output pins to him according to the number jù displayed on the Internet, and after the report. He added casually: "......, Xiao Peng, this chip has given me a lot of inspiration, maybe we can use it in the future." It would be great if you could find an alternative this time. ”

Peng Huading already had an alternative in his heart, and in order to thank him for his help, he said: "Mr. Zhuang, the output of the first few pins of this chip is about the same as the output of the computer power management chip, and the output voltage of the back two pins is the same as the output voltage of the power management chip on the switching power control board. ”

Zhuang Diping is also a technical master, and after listening to Peng Huading's words, he immediately understood, and hurriedly smiled: "Haha, great!" Xiao Peng......, no, I'll still call you Boss Peng, I didn't expect your brain to spin so fast, and I thought of this alternative method at once. ”

Peng Huading smiled and said modestly: "It's not that my brain is spinning fast, it's because I'm dealing with a fault, there are no spare parts for the time being, and I've been thinking about alternatives for a long time. If it weren't for you, I wouldn't have dared to use it, and I have to thank you. However, this alternative method has a disadvantage, that is, the load on the chip is a bit large, and it may be necessary to add a thyristor to amplify. ”

Zhuang Diping was stunned for a moment and said, "Thank you!" Your words will make me take one less detour in the future. Boss Peng, when are you coming to the provincial capital, I have a treat. I have a lot more questions for you......"

When Peng Huading was talking to Zhuang Diping on the phone, Li Yuxin next to him was full of disdain: "I really opened my eyes and said big things, why have you been thinking about it for a long time?" You only got the circuit board a few minutes ago and started calling......" However, he was soon surprised, "This kid just saw the circuit board and thought of an alternative, which made the other party surnamed Zhuang admire, is it the level of the surname Zhuang is not high or the kid surnamed Peng is profound?" ”

At this time, Peng Huading said: "......, because of the urgency of time this time, I may not be able to buy a switching power supply chip here in Yuejiang City for a while, so I will buy a few computer power management chips instead." ”

Zhuang Diping was shocked and blurted out: "You still take the more commonly used chip to replace the original chip solution, okay?" Then, he said worriedly, "The two power management chips together can't replace the output of those two pins, although the voltage is the same, but the current tolerance value is too different, once there is really a large current, it will definitely burn it." ”

"I only use it for a few minutes, not for a long time," Peng said. ”

Zhuang Diping was even more surprised and asked, "Only a few minutes?" You've finally come up with such a solution just to use it for a few minutes? ......, the threshold can still be increased if it only takes a few minutes, after all, these parameters are derived after long-term use. ”

As long as the container suspended in mid-air is lowered, it will naturally only take a few minutes.

Peng Huading said: "Yes, the allowable value of this chip is so large, it does not mean that it will really have such a large current output when it is working, the chip allows such a large current is just that the designer considers that it is possible to produce such a large current." ”

Zhuang Diping said with a smile: "That's right, if there is such a large current for a long time, it is better to use a thyristor to be safe, and the precision pcB circuit printed board cannot withstand such a large current for a long time." ......, hehe, I'm still a little curious, why do you just need them for a few minutes? ”

Peng Huading replied: "It was a customer's crane that was suddenly struck by lightning when the crane container was disembarked, and the strong electricity was broken into the control circuit to control the main board, and now as long as it can put the container down." ”

Zhuang Diping suddenly realized and said, "Then you can try it." I'm afraid that it's not just the power management chip that is broken, then it's troublesome. ”

Peng Huading smiled and hung up the phone, whether Zhuang Diping agreed or not, he was ready to do it a long time ago.

After hanging up the other party's phone, Peng Huading immediately asked Li Yuxin to take people to the computer city and other stores that sell chips to buy commonly used power management chips: the most common chip in the electronics market is the chip used in the computer, he learned computer applications, and knows which chips are the most common, that is, some small counties have them, not to mention prefecture-level cities like Yuejiang City.

As soon as Mr. He and the others who stayed below heard that Peng Huading had come up with a solution, they were pleasantly surprised, and at the same time, they immediately ordered their drivers to send Li Yuxin and others to various computer cities to purchase the chips and electronic components they needed, and also told them to buy more.

When the buyer got into the car, Peng Huading stood on it and shouted, asking them to buy a chip test motherboard by the way, which is the kind of double-sided single-layer circuit board, whose function is to plug in the chip and extend its pins in order to test the relevant parameters of the simple equipment, which is generally available in stores that sell chips.

After Li Yuxin and the two maintenance personnel came out with the chip model given by Peng Huading, the cockpit was much empty.

Peng Huading stayed in the cockpit of the crane and carefully drew the circuit diagram, while cutting off the pins of the broken power management chip with scissors. Because he couldn't possibly know how the pins were connected to the PCB PCB inside him, he had to continue to use the pins, ready to use thin wires to lead the pins out, and then make a one-to-one connection after the test board was bought.

If there is a circuit board designer here, it will definitely laugh, this copycat is too unlevel, too low-level, right?

Surely no one thought that this was the best alternative that Peng Huading thought of in such a short time, and no one could come up with it in such a short time.

When Peng Huading was drawing the circuit diagram, Guo Yi, Mr. He and the mysterious person in military uniform also climbed up.

Guo Yi asked on their behalf, "How is it?" Will it work? ”

Peng Huading smiled and said, "It's hard to say, the probability of success is only 50 percent. I can only pray now that the other components are not burned, otherwise I won't be able to repair them even if the gods come. ”

(Third, I would like to ask you: Can I give a monthly pass?) ）