The weapon tycoon who traveled to Daqin

Qi State's weapon imitation has just begun, but Qin Guo has begun another epoch -making revolutionary technical achievement. This is radio technology.

With the continued research of electronic tube technology, radio technology has developed rapidly, but in order to accelerate its promotion, the middle text is to make full use of the spare time to help its technology more mature.

The previous Qin Guo radio technology only issued some radio signals without any meaning. These signals did not have any information value. Subsequently, radio technology improved the electronic tube technology and used vacuum electronic tube as a signal receiving device. The solid foundation, but this is far from large -scale popularity, because these equipment is still large, which requires further simplifying these technical equipment.

Shang Wen first checked the materials currently used by Qin State. Among these materials, he did not see the material he wanted to see, silicon, silicon is a good semiconductor material, but he turned over all the records that Silicon did not indicate that silicon did not indicate that silicon did not indicate that Silicon was not explained exist.

Silicon does exist around us, and it is the second element of richness on the earth, but mostly in the form of oxides in nature, but Qin Kingdom can invented the vacuum electronic tube. For the development, this element is 种, and 锗 is also a good semiconductor material.

素 belongs to the scattered elements, and there is no ore for industrial mining. It occupies 7.0x10-4 in the crust. It contains a small amount in coal, silver, tin, zinc, copper and other ore. Metallurgical waste or flue dust is recovered, and the process found, the same as industrial production, is also discovered from it.

The scarcity of this element determines its large -scale mass production. Shang Wen decided to refine pure silicon first. In the laboratory, magnesium powder can be used to restore powder silicon dioxide under red heat. Magnesium powder, then washed the unsuitable silicon dioxide with hydrofluoric acid, that is, single silicon. This method is not pure -fixed silicon that is not pure enough. It is brown -black powder. Middle Restore Silicon (SIO2 content is greater than 99%), and the reducing agent used is petroleum coke and charcoal. When using a DC electric arc furnace, you can use petroleum coke instead of charcoal. High -quality silicon (SiO2 is greater than 99%), which can directly refine high -quality silicon for making silicon steel sheets. High -purity semiconductor silicon can be used to restore high -purity trichloro hydrochloride SIHCL3 or with hydrogen in a 1,200C hot silicon rod. SICL4 is made, super pure monocrystalline silicon can be prepared through straight pull method or regional melting method. Shangwen wrote in detail the method of preparing silicon in modern electronic industry.

After extracting purity silicon, it is the manufacturing circuit board and diode or a triode. Shang Wen believes that the manufacturing triode is the best, because the triode can enlarge the weak signal.

After seven consecutive days of continuous research, Shang Wen has initially completed the development of diode, but the triode still needs some further upgrades of materials to complete, but the vacuum electronic tube can complete the acceptance of the radio signal.

Some of the high -rise buildings of Qin State have established some steel towers, not only for lightning rods, but also some signal receivers installed. This is the result of continuous testing the radio signal.

Broadcasting programs were first converted to audio signals through the microphone, and after being released, it was modulated by high -frequency signals (carriers). The audio signal is included in the high -frequency carrier signal. When the high -frequency signal is amplified again, and then the high -frequency current flows through the antenna, it forms a radio waves outward. The breeding radio wave was received by the radio antenna, and then was enlarged, demoded, and was restored to audio electrical signals. It was sent to the speaker sound coil. The process of conversion.

The broadcasting principle of broadcasting stations has been known, so the next is a large -scale popularization of this kind of accepting device. Now Qin State needs a relatively simple acceptance device to popularize this kind of radio.

However, Qin Guo quickly had a cheap radio. This is the ore radio. The ore radio refers to the useless radios that use antenna, ground wire and basic tuning circuit and ore as a detector. The easiest radio receiving device, the ore radio was first used by the Qin Kingdom as a detector, but now he has the biggest use, that is, accepting wireless broadcasts.

However, this kind of ore radio has a big disadvantage, that is, it can only be listened to one person, and the acceptance performance is poor.

The products launched by Shangwen are DC electric radios and AC radio radios. The electronic tube radio uses two sets of DC power supply to power. One set of filament power supply, one is an anode power supply, and the power consumption is large. The use of radio use is high. The radio using the AC power supply is cheaper than the DC electronic tube radio, but due to the large electronic tube volume, high power consumption, fever, short life, low power utilization efficiency, fragile structure, and high -voltage power disadvantages.

The transistor radio requires invention of transistors to be widely popular. With the current technical level, it is estimated that there is still a certain difficulty.

Whether it is the ore radio, or the DC electronic tube radio and AC electronics radio, and the future crystal tube radios, Qin Guo finally started new information dissemination in radio, and Qin Guo media began to move from newspapers to wireless. A new media was in Qin. The country was born.

"Give Ms. Siter, the gentlemen are good afternoon, welcome to listen to Wenyang Radio, I am a broadcaster Xiaobai, today is also excited and very happy, because our country has new news tools. This is a huge change from literal to sound. , "Although this is not the first voice of Qin State in radio, it is the first radio broadcasting sound of Qin Kingdom.

Ore radio is popular among ordinary people. This kind of cash register with only three and a half two and a half is cheaper and durable, but if you can't hear it clearly, wealthy people buy AC radio radios to listen to the show. Different the sound in a radio wave once.

However, radio can only be covered in Xianyang, and it has not been able to cover all places in Qin. Because this involves a problem of a high -power radio station, the emergence of radio radio has quickly attracted the attention of the military. They think this is this kind of kind. The receiving device of the wire without the wire is much light,