Mir Scientist Hans Christian Oersted first observed the deflection of a magnetic needle or compass placed near a current-carrying wire. This concludes that a current-carrying wire can produce a magnetic field around it. In another article, we have discussed the Origin, definition, unit and dimension of magnetic field. Since the magnetic field is a vector quantity, … Read more
A static charge produces an electric field around it. Again, when a charge is in motion, it produces a magnetic field around it. But how electromagnetic waves are produced? An accelerating charge produces electromagnetic waves where both the electric field and magnetic field propagate together in an electromagnetic field. Electromagnetic waves are nothing but the … Read more
We learned about electric charges, electric charge distributions, electric field and Coulomb’s law of electric force in previous articles. Fundamental law of electrostatics tells that the charges of same sign repel and opposite charges attract due to electrostatic interactions. The paths through which the charges move due to the electrostatic force are known as electric … Read more
An amplifier can produce an enlarged but exact version of the small input signal at the output of an electronic circuit. Electronic devices like TV, radio, tape recorder, etc. require amplifiers for their operations. These devices do not operate in the same way. Some devices need to amplify the current, some devices require to amplify … Read more
A static electric charge produces an electric field and a moving charge produces a magnetic field around it. Electric charges can move due to electrostatic force and this force has a very useful relation with the electric field. In this article, we are going to discuss the electric field and electric field Intensity due to … Read more
In another article, we have discussed the Bipolar Junction Transistor and the differences between NPN and PNP transistors. Transistor characteristic curve is a very useful thing to understand the basic principle and operation of a Transistor. In this article, we’re going to discuss the input and output characteristics of a Transistor. There are three possible … Read more
Bipolar Junction Transistor (BJT) is one of the very important electronic circuit components in the world of electronics. Scientist William Shockley discovered the first Transistor in 1948. Modern technology is very much progressive and many varieties of transistors have been discovered. These transistors are widely used in analog and digital electronics. In short, semiconductor diodes … Read more
Transistor is one of the basic circuit components for electronic devices. The main purpose of a Transistor is to Amplify electronic signals. There are two types of BJT Transistors – NPN and PNP. In another article, we discussed the construction, symbol and other properties of BJT Transistors. In this article, we’re going to discuss the … Read more
p-n junction diode is a semiconductor devices that has a wide application in electronics. Diodes and transistors are the basic elements of most of the integrated circuits. In this article, I’m going to discuss the formation, characteristics curves, bias circuit diagram, working principle and uses of a p-n junction diode. A p-n junction diode is … Read more
We already discussed the Semiconductor material and a semiconductor device p-n junction diode. Normal P-N junction diodes cannot operate at high reverse bias voltage because of the breakdown in diodes. To operate at high reverse bias voltage, a diode is to be designed in a special way. Zener diode is such kind of device that … Read more