all above electronics

Capacitor Capacitor is a passive component which is two legs with polarity.  Some of the capacitor do not have polarity. Here we will learn about polarized capacitor. Polarized capacitor has two  polarity one is positive + another one is negative-.  To know its polarity either one leg will be long describing about positive + polarity or in capacitor there is given - minus sign in black letter exact up of that one leg. Capacitor are found with different different storage capacity which is measured in Farads. For smaller storage, it is measured in micro-farad. The charge time of capacitor depends on its farads if  the value of farads goes high then charge time of that capacitor will be more. Symbol Of Capacitor

Inductor  Inductor also called coil is just loop of  copper wire with two terminals. It is used to store electrical energy to magnetic energy and vice-versa in a circuit. It is measured in henry. Inductor are used to make electromagnet, transformer, speaker, solenoid and relays for switching.

What is Resistor ? Resistor is a passive two terminal component which resist the flow of current in the circuit. Passive component means that do not control current by means of another electrical signal. In other words there is no third person like base in the transistor to make them work or like IC that needs power supply to make it work. Note: IC's and transistor are active components. Measurement of Resistor ? Every resistor has its resistance value measured in ohm's. And it follows  ohm's law. Symbol of ohm (Resistance) Types of resistor: Fixed resistor (those resistor which resistance is fixed). Symbol of Fixed Resistor Fixed Resistor Variable resistor (those resistor which resistance can be vary from one measurement to another) Potentiometer or Variable Resistor Varistor-Voltage Dependent Resistor (whose resistance changes with voltage). Varistor or VDR Thermistor a.k.a. Temperature Dependent Resistor (whose resi

In this note we will learn about how to make your own wireless earpiece at home easily.  But firstly we should learn how speaker works. You can see the gif (animation) showing how speaker works. As we know that when we apply voltage in the inductor, the inductor acts like a magnet this effect is known as electromagnet and we all know that in every magnet there are two poles(the south and north pole). Continues changing of poles in the speaker produces sound because like poles repel and unlike poles attract. You can see in the picture down below: Because of this effect our speaker produces sound. OK, I hope you have got internal working information of speaker. But till now you only learned about speaker I will tell you more than this. I will tell you one great fact i.e. as you can see the working picture of speaker you might have notice that why the inductor only moving up and down, why not the permanent magnet ? This is because the permanent magnet is fixed in one

Hi, friends welcome to my blog. This is my 5th text in the blog. OK in this tutorial we will learn how to make USB Speaker for your PC. OK, Lets start, To make this we need an Operational Amplifier or simply called op-amp. In this project we are using LM386 low power audio amplifier which is suitable for any PC. OK, take a look of the circuit Circuit is so simple to understand: Pin 1 and 8 is the gain pin. Gain starts from 20-200 which means 20 is small sound peak but 200 means highest sound peak if we don't use capacitor between pin 1 and 8 then output of sound will be low but if we want to increase sound volume then we have to connect 10uf capacitor with 50v to achieve gain of 200. We are using C1 which is 100uf 50v. We are using this capacitor to block DC source from the output because DC is not suitable for good sound. And finally we are using potentiometer to control the volume. For video click the following link:- https://www.youtube.com/watch?v=d-RzdJQKp

Hello friends , this is my 4th post in blog and today we will learn about "How To Interface Gas Sensor with Arduino UNO and LCD." Before starting we will first understand "What is Gas Sensor ?" Gas sensor is a type of sensor which is capable to sense LPG gases and can give output HIGH or LOW logic signal to Arduino. In this project I am using MQ6 GAS SENSOR but we can use other also so don't worry. OK, lets look circuit in bread-board. By the way you can use pin-13 as output you can connect buzzer or led to alert. I forget to join buzzer in pin-13. Better to put buzzer. For video click the following link:- https://www.youtube.com/watch?v=BH0F8IuXSnw CODE: #include <LiquidCrystal.h> LiquidCrystal lcd(12, 11, 5, 4, 3, 2); int LED = 13;  int GAS_DO = 7;  int STATE = 0;  void setup() {   lcd.begin(16,2);   lcd.print("LPG LEAK SYSTEM");   delay(1500);   lcd.clear();   pinMode(LED,