Capacitors are such a thing...
It is a charged container and is a device that holds a charge.
Any two conductors (including wires) that are insulated and closely spaced from each other constitute a capacitor
The insulating medium is different, the conductor spacing is different, and the power of charging is different, which we will discuss later.
We understand
How is the capacitor charged and how is it discharged?
Capacitor charging diagram
Capacitor discharge schematic
Capacitor charging power - electrostatic capacity
The capacity of the water in the bucket is expressed by the volume, the basic unit: cubic meters.
The power of capacitor charging is expressed by electrostatic capacity, the basic unit: Farah (F).
1 Farah means to give 1V voltage, this capacitor can hold 1 Coulomb (6.25 × 1018 electrons) charge!
In the field of capacitors, 1 Farah is too big...! Pifa, Nafa and microfacies are commonly used units.
1 Farad (F) = 103 millifarads (mF) = 106 microfarads (uF) = 109 nanofarads (nF) = 1012 picofarads (pF)
"Why does the usage pull the unit of capacity?"
Children's shoes are always very serious!
The use of "Fala" as the unit of capacity is to let the world remember that the cattle named "Faraday" are unrivalled in electric power!
Let us see how strong he is...
His full name is Michael Faraday - Michael Faraday
The arrogant people are called Michael!
He had no formal education at an early age, and he had read only two years of primary school because of poverty at home.
The arrogant people have dropped out of school early!
At the age of 22, he was fortunate to be the servant of the technology giant David at the time, to help the teacher to clean the shoes, to do experiments, and to follow the masters of this savage in the European countries!
Have a savvy mentor is the premise of whether you can be awesome!
At the age of 27, under the guidance of Master David, he made a series of things not only for shoe-shining, but also for the metallographic analysis method when studying alloy steel. Today, technology research alloys use this method....
The arrogant people are all decent!
When he was 30, he did something he thought was very good. He invented a device that would turn as long as electricity passed through the relevant parts. The first electric motor in human history, the device was simple, but it is today. The ancestors of all the motors used in the world.
However, because he did not report to himself at the time, Dawei’s mentor, David, said that Dawei said that he was very angry. He was considered not to be beaten, and the various factions screamed at him. ......
Even if you are already a bully, but when there is a big bully on the field, low-key!
Depressed for many years in cold eyes, embarrassment and even insults... He can only obey the arrangement to play with glass... until the death of David and David, he does what he likes to do.
When he was 40 years old, he did a sensational sensation in the rivers and lakes. At that time, the big coffees of all the various factions felt great things. He experimented with the law of electromagnetic induction and invented the disc generator.
Although the structure is simple, it is the first generator created by mankind. The generator that generates electricity in the modern world starts from it.
........ He still has a lot of things, such as the concept of electric field and electric field line. Carefully tested in electrochemistry, summed up two electrolysis laws, both of which are named after him, forming the basis of electrochemistry. He gave many important terms in chemistry to popular names such as anodes, cathodes, electrodes, ions, etc...
The result of the labor of the standard is as selfless as the sun and truly brings light to mankind!
It is from the invention of Faraday that we have a colorful world of our human society today!
Faraday's contribution benefits everyone, raises human civilization to an unprecedented height, and advances the civilization process several hundred years ago...!
With "Fara" as the unit of capacity, we are so eager to remember this cow named "Faraday"!
The power of capacitor charging - the size of the electrostatic capacity can be measured by the formula C = Q / U, of course, there are many special instruments can be directly tested.
The key is that the ability of the capacitor to charge electricity - the electrostatic capacity, is determined by the opposing area of the electrode plate, the spacing of the electrode plates, and the type of medium between the two electrode plates. The formula is as follows:
That is to say, the insulation medium of the capacitor is different, the spacing of the electrode plates is different, and the electrical plate is different in area from the power of the different charging power.
It is also important to note that the insulating medium of a capacitor always has disadvantages on the other hand when there are certain advantages.
Accordingly, in order to improve the charging capacity of capacitors, or to adapt to different use occasions, engineers have shown their magical powers to create capacitors with various characteristics.
This is a long story...
