"Oh! Oh my God, what's that? The French engineer Godan was dumbfounded.

China Town Red Star Science and Technology Park, Li Xiang is the director of infrastructure construction, looking at the French who have never seen the world, laughed

"Hahahahahaha

"That thing is called a tower crane, a must-have hoisting machine for high-rise buildings!"

"Aren't your excavators steam powered?"

“NO！ NO！ NO！ The era of the steam engine has passed, it is diesel engine power plus electricity, safer and more powerful! Li Xiang introduced a variety of construction machinery.

Speaking of which, the scientific wizard Nikola Tesla has been in the base for more than 1 year, and his biggest achievement is to manufacture an electric motor and a diesel generator, and it is only half larger than later generations in terms of weight and volume.

The smallest electric motor is only the size of a palm, and it can already drive a 5kg light drone.

In particular, he carefully studied the manufacturing process of electron tubes and transistors.

Historically

In 1883, Thomas Edison, the inventor, was searching for the best filament material for the light bulb.

When studying the life of an incandescent lamp, a small piece of metal is welded near the carbon filament of the bulb.

As a result, he discovered a strange phenomenon: although the metal sheets did not come into contact with the filament, if a voltage was added between them, the filament would generate an electric current that would approach the nearby metal sheets.

Where does this mysterious current come from? Edison couldn't explain it either, but he lost no time in patenting the invention and calling it the "Edison effect."

Later, it was proved that the current was generated because the hot metal could emit electrons to the surroundings. But it was the British physicist and electrical engineer Fleming who first foresaw the practical value of this effect.

Fleming's diode is a brand new invention. It works really well in the lab. However, for some reason, it was not as successful in practical use as a geophone, and it was not as reliable as the ore geophone that was invented at the same time.

Therefore, it did not have any impact on the development of radio at that time.

Shortly thereafter, the impoverished American inventor DeForrest invented the first vacuum transistor by cleverly adding a grid between the filament and the plate pole of the diode.

This small change has led to unexpected results. It is not only more responsive and capable of producing music or sound vibrations, but also integrates three functions: detection, amplification and oscillation.

Therefore, many people regard the invention of the transistor as the real starting point of the birth of the electronics industry. DeForrest himself was very pleasantly surprised, thinking that "I have discovered an invisible empire in the air".

By around 1960, the radio industry in Western countries produced 1 billion radio tubes a year. In addition to being used in telephone amplifiers, maritime and air communications, the tube is also widely used in the field of home entertainment.

Deliver news, educational programs, art and music to every household. Even the invention and further development of airplanes, radars, and rockets have a helping hand in the electron tube.

Therefore, the principle of the tube is not complicated, TSL will look at it, although the energy consumption ratio of the tube is not ideal, but with it is a revolutionary breakthrough in the industrial field.

So Tesla has burrowed into the underground warehouse of the think tank, began to dismantle some electronic watches, remote controls, radios, and began to study the structure of transistors.

Speaking of which, the invention of the transistor also has a story.

。。。。。。。。。。

The era of semiconductors began on Christmas Eve in 1947.

Joh, two scientists at AT&T's Bell lab

Ba

dee

(John Bading, May 23, 1908 – January 30, 1991) and Walte

B

attai

(Walter Bryden, February 10, 1902 – October 13, 1987) showed a solid-state electronic component made of germanium, the first generation of semiconductor materials.

Two scientists observed that when a current signal is applied to the contact point of a germanium crystal, the output power will be greater than the input power, a result published in 1948.

This is the world's first point-contact transistor, the transistor word "t."

a

sisto

"By" t

a

sfe

and

esisto

"Two words combined.

The leaders of two scientists, John Badin and Walter Bryden, William Shockley (13 February 1910 – 12 August 1989), were not willing to stay out of this important invention and decided to make their own contribution.

Shoklay worked hard at Christmas and deduced the working principle of this double carrier transistor, and in 1949 published the theory of crystal management, while also predicting the emergence of another transistor that would be easier to mass-produce, the surface contact double carrier transistor (Ju

ctio

s Bipola

T

a

sisto

）。

William Shawkley, John Bading, and Walter Bryden shared the 1956 Nobel Prize in Physics for the invention of the transistor.

Due to the large demand for electronic components in the military and civilian, the semiconductor industry was able to develop rapidly in the 50s of the 20th century.

Due to their small size, low power consumption, low operating temperature and fast response time, germanium-based transistors quickly replaced vacuum tubes in most electronic products.

The advent of technology for the production of high-purity monocrystalline semiconductor materials has accelerated the production of transistors.

The first monocrystalline germanium appeared in the 50s of the 20th century, and the first monocrystalline silicon appeared in 1952. Throughout the 50s of the 20th century, the semiconductor industry invented discrete components and used them in the manufacture of tape recorders, computers, and other civilian and military products.

A so-called discrete component is an electronic component, such as resistors, capacitors, diodes, and transistors, which are still widely used in electronics and can be easily found on printed circuit boards (PCBs) of many advanced electronic systems.

In 1956, William Shokley left Bell Labs in New Jersey and returned to his hometown in California to open the Shawkley Semiconductor Laboratory in the valley south of the San Francisco Bay Area.

With financial support from Bellman Instruments, Shawkley's lab transformed what was once a valley of almond trees into the world's high-tech center, known today as Silicon Valley.

So the difference in efficiency between electron tubes and transistors is more than ten times.

The senior management of Donghua decided to implement bay road overtaking in power electronics technology, and pay more attention to the use of electronic technology (tube), research generation (transistor), and pre-research generation (computer intelligence), so that no one has me, no one has me, and I am excellent.

Even if we know that oil and gas will be the main energy source in the next 100 years, we will consider the consequences of polluting the environment. At present, Donghua has set up a research institute of environmental protection and benign development strategy, focusing on hydropower, solar energy, wind energy, tidal energy, hydrogen energy, multi-cycle plantations and farms.

In terms of industrial development, pollution and environmental protection are also planned to be coordinated and balanced, so that urbanization and environmental protection can go hand in hand.