What is the difference between the use of transistors and electronic tubes?

First of all, we need to rank the tubes and transistors. The tube is the grandfather, the transistor is the grandson. The grandchild is tied to the history of electronics. Why do you say that the tube is grandpa? This story starts from Grandpa's time. A hundred years ago, it was cool to play with the radio. Cool to what extent, and now know the software bull there talking and laughing almost. It was the age of enlightenment in electronics. Anyone who has ever used a radio knows that as long as you are not trapped in a concrete cage, you can basically receive a few stations in the local and provincial areas, and even dozens of stations can receive signals with a better radio. After listening to the Pingshu after dinner, at two or three o 'clock in the evening and then transferred to other stations to listen to ghost stories, that is called a lively. Here comes a problem. Each station has a dedicated channel. In technical terms, it is xxx "frequency". Radio signals of different frequencies are mixed together and travel through the air. Just like when the bear child is running wild in the street in front of his own house, in addition to the sound of his mother calling him home for dinner, there are all kinds of garbage collectors, soy sauce players, and mahjong players. You're not a good boy if you pretend you can't hear her. A good radio, when you tune in to the story program, how can you mix a low-key two-and-a-half-course cure miracle medicine health lecture? Heard the book, do not health lectures of this process, we use professional words, called "detection". A radio from over a hundred years ago that was pretty bad, using galena for detection.

Imagine wrapping a large coil of thin copper wire around a broken rock, and not necessarily being able to hear it clearly. Just like the previous TV, looking at it, it will be spent, and it will be good to go up and put a slap in the face, the earliest ore radio is simply a metaphysical. Later, people replaced the stone with a hollow cylinder above neatly around the wire, such an improvement after the channel is not a metaphysical, but there is still a big problem, at this time the radio can only rely on the electromagnetic wave energy in the air to make sound, there is electricity in the socket but not strong, because the goods have not advanced enough to grow a power plug out ah. The electromagnetic wave energy in the air is quite weak, and if you are close to the radio station, you may be able to push the appearance of one or several headphones. If we put it out there, it's impossible. Stay away from the radio station. You can hardly hear anything. It's like a child who's gone too far, and his mother wants him to hear the call to come home for dinner, and what can we do? Shout. Bear child to hear his mother's voice, open your ears. That's where our grandfathers' tubes come in. With this tube thing, it's like a fucking kid with a loud plug, and it's a sound you can hear 400 miles away. Kids can hear a mosquito from 500 feet away. Those who are far away can hear, and those who are close can hear more clearly without effort, which is really much more powerful. This is when commercial radio stations began to appear that could listen to news broadcasts and things like that, but it was in the United States. The main use of the tube is to make a small electrical signal into a large one. In addition to being used in radio stations and radios, there is another function, that is, external playback. Since you can amplify the small signal, tune it up, plug in the radio, and naturally you can amplify the sound that you can hear as close as headphones, and then release it out of the speaker. 

It would also be great to do away with radio functions such as radios and just play music. Seems to be the end of the story here, but don't worry, this tube is very good, but there are many problems. It is estimated that few people know what the electronic tube looks like now, it is probably a glass cover, which is filled with a few pieces of metal foil, and then the inside is vacuumed, and the tube is made. This sounds particularly unreliable, nowadays mobile phones are using what big baboon glass, it is still brittle after a fall, let alone when there was no glass for primates to play with. And the vacuum thing, when the air escapes, the inside burns, which is really nerve-wracking. In addition to being particularly delicate, this vacuum tube has another disadvantage, which is that it is particularly expensive. This thing was first used by Edison when he was messing with the light bulb (although he did not know what it was used for), you want to use this thing, just like his old man tossed out of the incandescent light bulb, you have to power, until the red electrons run out of the metal foil to work. So later, there was a grandchild called transistor to take over grandpa's hand work. In fact, the name transistor has been very outdated, perhaps you have heard a name called transistor, but in any case, this statement is not very accurate. It was called a transistor because one of the main materials was crystalline silicon. Of course, we all know that the first transistor was made out of germanium, not silicon. However, from the initial development of bipolar semiconductor transistors to the present, the tube of this "transistor" is becoming smaller and smaller, the performance is becoming more and more powerful, and a lot of things are incorporated into it. Just like the relationship between fried sauce and noodles, it is not accurate to use "noodles" to summarize this thing. Again, back to the point, transistors compared to tubes, tubes can amplify the signal, the transistor can also do. But the transistor, as I mentioned earlier, is made on crystalline silicon. What is this concept? You can think of it this way: I buy a large piece of silicon ingot, then pinch off a small piece the size of a mung bean from it, and play with it like an embroidery, and it is done. 

When the transistor is ready, it can be sealed directly inside a metal tube or, as is now common, directly inside a lump of plastic. This thing does not need to be burned red to use, and an iron cup is more durable than a glass cup, which is obvious. It is not necessary to keep a vacuum inside the pipe, you can fill it with nitrogen and seal it, or directly plug it with glue. He's better than blue. Electron tube and transistor together, like bear children and good children, a smart but playful, to dad with feather duster guard will seriously to do homework; Although a brain is not very bright at the beginning, but as long as the parents call, they will consciously sit down to learn. Although this is a little strange, but you understand the meaning of good, don't take it seriously. These are the little things about tubes and transistors on the eve of the enlightenment and golden age of electronics. For both, the most important use is actually the same: to amplify electrical signals. The difference is that the working principle is not the same, and the use cost of this difference. If you think this answer is good, please click "like", I will continue to update the computer age in the form of popular science articles.