Learn Basic Electronics, Electrical and Communication Engineering Education for Future by e learning

Connection of Resistor In a circuit, there are two basic ways, by which resistor can connect together. These are 1.        Series Connection and 2.        Parallel Connection Besides this , there are also two types of connection . These are 1.        Star Connecton and 2.        Delta Connection Series Connection of Resistor Resistor is a two terminal passive component that used to limit the flow of current in a circuit. Assume the name of legs of R1 resistor is A and B. And the name of legs of R2 resistor is C and D. Now if B leg of R1 resistor is connected to C leg of R2 resistor and A and D legs are free or connect to other resistor in the same fashion, then such types of connection is called Series Connection. Resistor: Series Connection When two resistor are connected in Series, Resistance are added. Such that, if we ca...

 Electronics Learn electronics, understand electronics and apply electronics in your daily life.

Basic Materials for Electronics: Conductor, Insulator and Semiconductor Today electronics is very important in our modern life. We are surrounded by electronics devices. From morning to night, every time, every second we use electronic devices to accelerate our daily work, to make our life easier. Computer, TV, mobile and there are thousands of electronic device which are mode of diode, transistor and integrated circuits. To understand how these devices work, we first have to study and understand the semiconductor materials that neither conductors nor insulators. Semiconductor contains some free electrons but these amounts of electrons are not sufficient to use in practical application. Depending on the conductivity or presence of electrons in a material, materials are divided into three categories.                         1. Conductor                     ...

Series RLC circuit acting as a Resistor, Capacitor and Inductor  When a resistor R, capacitor C and inductor L are connected in series with a ac supply voltage, then this circuit is called a series RLC circuit. This circuit can use in three different ways in practical use.       1.         As inductor 2.       As capacitor and 3.       As resistor Fig-1:  Series RLC circuit When acts a inductor, RLC circuit will show all the properties of an inductor i.e 1.       This circuit will store energy in  the form of magnetic flux 2.       For ideal case, Phase difference between current and voltage will be 90 degree. 3.       Voltage will lead current by 90 degree. When acts a capacitor, RLC circuit will show all the properties of an capacitor i.e 1.       Th...

RL Circuit: When a resistor (R) and a inductor (L) are connected in series with a ac voltage source (v), then it is called series RL circuit. It is a first order differential circuit.  In this circuit, the values of R , L and v are fixed. By varying the frequency of the applied voltage, this RL circuit acts as a resistive circuit and inductive circuit. Fig-1: RL Circuit Total impedance of the circuit  Z  = sqr(R 2   + X L 2 ) From the above equation we see that , total impedance of a RL circuit consist of resistance and inductive reactance. The total impedance changes with frequency.   RL circuit acting as a Resistor:  As we know that, Inductive reactance, X L  =  2πfL,  that is inductive reactance increases  with increasing signal frequency. So at low frequency, the RL circuit acts as a resistive circuit, because at low frequency, inductive reactance will be much much lower than the resistance. And the...

  Electronics in Practical Life The first question comes in our mind is what is electronics and why world run behind the electronics. What is the power of electronics and how electronics change our life style with its magical power? In our everyday life, we are surrounded by electronics devices and if I say we can’t stay a single moment without the help of electronics, it will not be probably false now days. Every moment we use electrical and electronic devices to make our life easy. We wake up in the morning by hearing the alarm and go to bed for sleep after watching television or using computer. In our everyday life, we use numerous electrical and electronic devices to make our life easy and perfect. Every moment we use our mobile for numerous purposes which is one of the magic of electronics. So in a body, we can say without the help of electronics our life would be so difficult. " Electronics is the game of electrons" So the question that comes in o...