Active Components

first blog of basic electronics I have covered the topic about the passive components so now today we are going to cover the active components of Electronics. Active components are divided into two parts is Electronic tubes and Semiconductor devises to know about the electronic tubes and semiconductor we have to know about the  active component it  includes amplifier components such as transistor triode vacuum tubes and tunnel diodes

 Electronic tubes are you can also be called the vacuum tubes

And electronics vacuum tube and electronic tube, not just a tube is a device that controls electric current between  electrodes vacuum tubes mostly work on the Thermal emission of electrons from a hot filament on heating cathode this type is known as a thermionic tube or thermionic value 

 electronic vacuum tube was invented in 1904 by John Ambrose Fleming vacuum tubes Where are basic component for electronics throughout the first half of the 20th century which show the diffusion of radio-television  radar sound recording throughout some application has counterparts using alien Technology such as spam transmission on electrical computers it was the invention of the vacuum tube that made this technology and practical 

Semiconductors

A semiconductor material has an electric conductivity value falling between the conductor such as copper gold and an insulating such as gas this resistance decreases as the temperature increases which is behave  opposite to that of metal their conductivity property maybe alternate in useful ways by the deliberated controlled introduction of impurities into the Crystal structures when two different doped regions exist in the same crystal a semiconductor junction is created the behaviour of charge Carriers which includes electrons ions and electron holes at this junction is the basic of diode transistor and the modern electronics in this the Silicon of phosphorus are mainly used 


A semiconductor is a substance usually a solid chemical element or a component that is conducted electricity under some condition but not other making and a good medium for and control of an electric current it conducts various depend on the current or voltage electrode or on the  intensity of radiation by infrared visible light ultraviolet or X rays

 special priority of semiconductor

 the special priority of the semiconductor depends upon the impurity and the doping added in the n-type semiconductor careers current mainly in the form of negative charge electrode in the manner similarly to the condition of current in the wire P-type semiconductor careers current predominantly as electron defendants called holes holes has a positive electric charge  equal and positive to the charge on an electron in a semiconductor materials the flow of holes occurs in a direct position to the flow of electrons


 types of semiconductors 

 semiconductors are of two types
 n-type semiconductor
 P-type semiconductor

 n-type semiconductor 
The term end time comes from the negative charge of an electron in n-type semiconductor electrons are major Carriers and the holes are the  minority carriers n-type semiconductors are created by the doping  with the impurities 
 A common dopant for n-type silicon is phosphorus or arsenic. In an n-type semiconductor, the Fermi level is greater than that of the intrinsic semiconductor and lies closer to the conduction band than the valence band.

P-type semiconductor

 this is the vice versa of the n-type semiconductor the term p-type refers to the positive charge  of    the hole c as opposed to N-type semiconductors P-type semiconductors have large hole concentration than the electrons concentration in p-type semiconductors holes are the major Carriers and electrons are the minority carriers P-type semiconductor are created by doping an intrinsic semiconductor with acceptor impurities a common P-type doping of silicon is Boron or gallium for P-type semiconductor the  A common dopant for n-type silicon is phosphorus or arsenic. In an n-type semiconductor, the Fermi level is greater than that of the intrinsic semiconductor and lies closer to the conduction band than the valence band.