RESISTORS

WHAT IS RESISTOR?

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

“Resistors is a passive electrical component with the primary function to limit the flow of the electric current”

What are Resistors made up of?

Resistor composition. Resistors can be constructed out of a variety of materials. Most common, modern resistors are made out of either a carbon, metal, or metal-oxide film. In these resistors, a thin film of conductive (though still resistive) material is wrapped in a helix around and covered by an insulating material.

Types of Resistors : Resistors, are the most fundamental and commonly used of all the

electronic components, to the point where they are almost taken for granted

Fixed RESISTOR :

A resistor is used to reduce the flow of electricity in an electric circuit. Resistors come in fixed or variable types. A fixed resistor cannot be changed as it is set at a specific value, whereas a variable resistor can manage flows at and below a specific level.

Variable Resistor :A variable resistor is a potentiometer with only two connecting wires instead of three. However, although the actual component is the same, it does a very different job. The pot allows us to control the potential passed through a circuit.

Use for Radio frequency

Series Resistors:Imagine two or more resistors in series, i.e. connected one after another so that the same current flows through them. The total resistance of the collection is the sum of individual resistances.

Circuits are Non polar

Numerical of series circuit:

Solution

DATA :R1: 100R2: 300R3: 50

Formula:V=IR

Parallel Resistors:

Resistors are connected in parallel when

the same voltage is

applied across each resistor

1/R=1/R1 + 1/R2 + 1/R3

Combination of series and parallel resistors:

Color Coding Of Resistors : Color coding of resistors

Colour Name Abbreviation color code no*

  black BLK 0

  brown BRN 1

  red RED 2

  orange ORN 3

  yellow YEL 4

  green GRN 5

  blue BLU 6

  vioLet VLT 7

  gray GRY 8

  white WTE 9

Gold 5%

Silver 10%

Resistors symbols:

Variable Resistors

Resistor

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