The celebration banquet can be regarded as a celebration banquet to celebrate the successful development of the tape recorder of Huaxing Electronics Factory.

At the celebration banquet, everyone ate and drank happily.

There are three tables in the canteen, and on each table, there are six dishes, a pot of braised pork, a large plate of braised pig's head meat, a pot of stewed pig's trotters, a bowl of stir-fried fat sausage, a pot of Xijiang special pig blood scalded rice noodles, plus a bag of peanuts.

This five-course meal, perhaps after more than ten years and twenty years, is already the food that the host is embarrassed to serve, because except for the bag of peanuts and rice eaten with wine, the others are greasy and greasy, and the guests are not willing to stretch out their chopsticks.

But at this time, this is already a very high-level hospitality, Fu Xin for this reason, from the factory raised a few pigs in the worker's house, bought a pig weighing several hundred catties, all on this table!

After the banquet, everyone was blushing and sitting around in twos and threes to talk.

"Director Fu, there is a problem, I have to report it to you!" Fu Xin, who was a little drunk, was pulled aside by An Shuishui, An Shuishui looked sad, there was no alcohol on his body, and he said with some disgust to Fu Xin's alcohol.

Fu Xin was still drunk, burped, and a breath of wine rushed on An Shuishui's face, and complained: "I said Section Chief An, if you can't say anything later, you have to be in such a hurry." Also, a good celebration banquet, how sad you are, did you encounter any difficulties, let's listen to it! ”

An Shuishui fanned the new exhaled wine with his hand, covered his nose and said, "I did encounter difficulties." Director Fu, you are so busy these days that I haven't found a chance to report to you, but now, I have to mention it to you. ”

An Shuishui is now the chief of the supply and marketing section of Huaxing Electronics Factory, mainly responsible for the introduction of raw materials and the sales of finished products, almost three months, he has been familiar with his work, Fu Xin also handed over some purchase channels to him.

"Director Fu, our supply is going to be cut off?" An Shuishui said.

When Fu Xin heard that it was serious, he shook his dizzy head, frowned and asked, "What is the source of goods?" ”

"A lot of sources, in addition to the diodes that we can produce ourselves, other such as transistors, thyristors, capacitors, resistors, etc., basically have problems, but they can be big or small." An Shuishui fanned the new squirt of wine with a little headache, and then said with annoyance.

Fu Xin listened to An Shuishui's words, and was so frightened that he almost fell, except for the diodes that he could produce, everything else had problems, this is a crisis, Fu Xin exclaimed: "What, what's the matter?" ”

Because Fu Xin's voice was too loud, everyone present heard it, and they all stopped what they were doing or said one by one, and looked at Fu Xin and An Shuishui.

"When everyone disperses, you go to my office, and I'll wait for you there." Fu Xinjiu woke up all of a sudden, his face changed slightly, but he still forced a smile on his face, this matter must not be spread, otherwise it will cause panic, this is not the place to speak, Fu Xin motioned An Shuishui to go to his office for a while and said.

"Tell me, what's going on?" After the celebration banquet was over, Fu Xin entered his office, and after a while, An Shuishui pushed the door and walked in, Fu Xin frowned and asked seriously.

An Shuishui also sold off the beauty of Guanzi, and said directly: "Here's the thing. The signal booster we cooperated with the military is about to end production, and the purchase channels introduced by the military have also begun to be cold to us, and after we have gathered the components needed for the production of signal boosters, many manufacturers began to tell us that they are out of stock in the factory. ...... of them"

Speaking of which, An Shuishui doesn't say anything, he is a smart person, let the upper level guess the things at the upper level, he can just click until he clicks, and it is not good to say too much. Random speculation at the top is likely to cause dissatisfaction among your bosses.

"You mean to say that we have finished the production of signal boosters, and those component manufacturers will not supply us, and they have supplied us before, for the sake of the military?" Fu Xin asked bluntly.

An Shuishui thought about it and said with a wry smile: "I'm afraid so." ”

"Okay, you go and write a specific report on this matter, and then you don't have to be responsible, I'll deal with it!" An Shuishui took the hero pen and tapped it on the table, deciding.

"Alright then, I've already written the report, I'll bring it to you later, and don't worry, I'll keep this matter a secret." An Shuishui said very sensibly.

"Mahler, I didn't pay attention to it before, but now I find out that these suppliers are all big factories that are very popular, no wonder this is the case." Fu Xin read the report handed over by An Shuishui, only to find a serious problem, the above suppliers are all large factories such as the first and second factories of Niuqi, and there is no small manufacturer, so it is no wonder that they will be out of stock.

Such a large factory, in today's terms, is not worried about the sales of products. Moreover, the leaders of these manufacturers are bureaucrats with some strength, not to mention that they can't afford to look down on a small factory like Huaxing Electronics Factory, as far as their mentality of seeking stability and waiting for promotion, Huaxing Electronics Factory, a deviant buyer in their opinion, if it is not a special situation, they really dare not give goods.

almost found the reason, Fu Xin had a decision in his heart. This kind of thing really can't be rushed.

……

"Director Fu, are you saying that we are going to start developing electronic components such as transistors and thyristors?" The army asked Fu Xin.

Fu Xin nodded and said, "Yes, do you have confidence." ”

The army thought for a while and replied: "I shouldn't have any problems, but the main thing is that it's not that I look down on our Huaxing Electronics Factory, but with our current strength, do we really have the ability to make these electronic components?" ”

This question, Fu Xin is also difficult to answer, to be honest, now there are R & D workers in the factory, the army is definitely one, Fu Xin also raised his salary to the point of Mo Li. In addition, Zhang Daquan and Zhou Weiming can be regarded as half, plus Fu Xin, that is, barely three.

As far as the production of tape recorders is concerned, in addition to Huaxing Electronics Factory, which is now capable of producing diodes, there is also a lack of electronic components such as transistors, capacitors, resistors, and inductors.

"This question, I have thought about it carefully, with our strength, it has been very successful to get one of the electronic components out, but why do I have such a big heart, I think you forgot one thing, I signed a cooperation agreement with Huaqing University and Yenching University two months ago, I think they must have research in this area, the big deal is that we give up a part of the profits and get research results from them." Fu Xin explained with a smile.

"Phew! How did I forget this? The army sent its own brains and continued, "That's fine." ”

Fu Xin smiled, in fact, he was very bitter in his heart, if it wasn't for the lack of time, he would definitely be able to make these electronic components when he was alone. Fu Xin asked the army for advice: "Do you think you are most confident about that electronic component?" ”

"There are too many types of resistors, capacitors, inductors and other components, I really can't do anything about this, transistors, compared to the thyristor rectifier components I know better, just the thyristor!"

"Triac, okay, let's do it!" In fact, Fu Xin wants to develop a triode.

The full name of the transistor should be the semiconductor transistor, also known as the bipolar transistor.

Thyristor is the abbreviation of thyristor rectifier element, which is a high-power semiconductor device with a four-layer structure of three PN junctions, also known as thyristor......

Strictly speaking, transistors refer to all single components based on semiconductor materials, including diodes, transistors, MOSFETs, and thyristors made of various semiconductor materials, so transistors and thyristors are in the ranks of transistors, and why does Fu Fuxin want to develop transistors?

This reason, speaking of which, is a bit ridiculous, Fu Xin is a bit obsessive-compulsive, Huaxing Electronics Factory can already produce diodes, two is followed by three, so he wants to make a triode first. In fact, diodes and transistors are two transistors in different meanings and have nothing to do with each other.

"Don't consider the one-way thyristor first, let's start with the two-way thyristor!" Fu Xin added. The research and development of this electronic component, the leading must be the army, since the army wants to engage in thyristor first, then thyristor, Fu Xin's obsessive-compulsive disorder is not serious, but there are many types of thyristor, the original one-way thyristor, Fu Xin does not want to engage in it, start with the two-way thyristor!

"There's no problem with that. However, we still have to figure out some principles of the unidirectional thyristor, the bidirectional thyristor is developed from above, and the unidirectional thyristor is the foundation. "The army thought about it, and the unidirectional thyristor cannot be completely ignored.

"Don't worry, the reason why I want to start with a bidirectional thyristor first, of course, has my considerations, because, I'm here" Speaking of this, Fu Xin stretched out the index finger of his right hand and pointed at his head: "What about the knowledge of one-way thyristors." ”

Then, Fu Xin said as if reading a text: "The unidirectional thyristor is a four-layer structure with three Pn junctions, and two electrodes - anode A and cathode K are drawn from the outermost P layer and N layer, and the control electrode G is led from the middle P layer. The circuit symbol is a diode, but with an additional lead-out electrode - the control pole or the trigger pole G.

In terms of control principle, it can be equivalent to the connection circuit of a PNP trio and an NPN triode, and the base current and collector current of the two tubes are paths to each other, which has a strong positive and negative feedback effect.

As soon as the base current of the NPN tube is fed from the G and K loops, the two tubes will quickly enter a saturated conduction state due to positive feedback. After the unidirectional thyristor is turned on, its conduction state is completely maintained by the positive feedback effect of the tube itself, and even if the control current (voltage) disappears, the unidirectional thyristor is still in the conduction state. The function of the control signal UGK is only to trigger the unidirectional thyristor to make it on, and after it is turned on, the control signal loses its control effect.

Both unidirectional and bidirectional thyristors are three electrodes. The difference between them should be that unidirectional thyristors have cathode (k), anode (a), and control electrode (g). A bidirectional thyristor is equivalent to two single thyristors connected in reverse parallel, that is, one of the unidirectional silicon anodes is connected to the other cathode, and its lead end is called T1 pole, and one of the unidirectional silicon cathodes is connected to the other anode, and its lead end is called T2 pole, and the rest is the control electrode (G). I'm not wrong! Fu Xin smiled.

The army couldn't help but extend a thumbs up to Fu Xin and asked, "Director Fu, you are also very clear about bidirectional thyristors, right?" ”

Fu Xin smiled and did not answer. (To be continued.) )