DAY 1 OF ELECTRONICS

DAY 1 OF ELECTRONICS BASICS:

RESISTOR, CAPACITOR AND INDUCTOR

Lets us know the basics of electronics in 15 days…

RESISTOR:

       

• A resistor is a component that resists the flow of current.
•  It has two terminals across which electricity will flow and it makes some voltage drop across it because of current.
• Resistors are measured in ohms, after ohm's law.

According to ohm’s law "Electrical resistance is equal to drop in voltage across the terminals of resistor divided by the current being applied".

Resistors are of two types. They are fixed and variable resistors.

• Fixed resistors have predefined value of resistor and give one constant resistor value. E.g. Ordinary resistor using in lab.
• Variable resistors have different resistor values and can adjust to required value of resistor. E.g. Rheostat & Potentiometer.

The resistor value can be calculated by means of color code

B-Black

B-Brown

R-Red                                                                

O-Orange

Y-Yellow

G-Green

B-Blue

V-Violet

G-Grey

W-White

G-Gold

S-Silver

Resistors can be used in a circuit in two manner series and parallel.

• Series resistors have equal current to each resistor and total resistance is calculated by adding each resistance.
• Parallel resistors have different current through each path and the total resistance can be calculated by adding the inverse of each resistance.

CAPACITOR:

A capacitor is a charge storage device used to store charge.

It consists of two conductive plates separated by an insulator (dielectric).

It is measured in Farad (Pico or micro)

A capacitor can be used upon in number of ways some of them are storing purpose and adjusting frequency in telecommunication.

It allows dc and blocks ac.

• Capacitors can also be connected in a circuit in both parallel and series manner.
• Total capacitance in series is calculated by adding inverse of each capacitor.
• Total capacitance in parallel is calculated by adding all the capacitors.
• To understand the working of capacitor clearly clicks on the following video..........

INDUCTOR:

• An inductor is nothing but the coil.
• It is also a storage device used to store magnetic field.
• It is measured in Hendry.

It allows ac and blocks dc.

• Total inductor in series is calculated by adding all the inductors.
• Total inductor in parallel is calculated by adding inverse of each inductor.
• To understand the working of inductor sees the following video........