1. RESISTORS Muruvvet DEMIRAL

2. WHAT’S THE RESISTOR? The resistor is a component in a circuit to reduce the flow of electric current. Its symbol is in a circuit diagram. Resistance values is called Ohm. It is shown Ω .

3. TYPES OF RESISTOR There are two types of resistors; Fixed Resistor Variable Resistor They are also classified according to the material from which they are made. Carbon film or metal film. Wire wound Foil resistor Grid resistor Carbon or metal film resistors are the most common.

4. FIXED RESISTORS Carbon Film This is the most general purpose, cheap resistor. Carbon film resistors have a disadvantage; they can tend to be electrically noisy.

5. FIXED RESISTORS Metal Film Metal film resistors are used when a higher tolerance is needed. The metal film resistor is used for bridge circuits, filter circuits, and low-noise analog signal circuits.

6. VARIABLE RESISTOS There are two general ways in which variable resistors are used. Value is easily changed, like the volume adjustment of radio. Semi-fixed resistor that is not meant to be adjusted by anyone but a technician.

7. RESISTOR COLOR CODE

8. READING RESISTOR VALUES Example: Red, Black, Orange, Green (Red=2),(Black=0),(Orange=3)20 x 103 = 20k ohmTolerance(Green) = ±0.5%

9. READING RESISTOR VALUES Example: Yellow, Blue, Black, Red, Brown (Yellow=4),(Blue=6),(Black=0), (Red=2)460 x 102 = 46k ohmTolerance(Brown) = ±1%