1. Resistors and Color-Code Benchmark Companies Inc PO Box 473768 Aurora CO 80047

2. Resistors Symbol ( R ) Resistance determines how much current will flow through a component.Resistance Resistance is the opposition to Current

3. Resistors Symbol ( R ) Resistance are used to control voltage and current levels. A very high resistance allows a small amount of current to flow.Resistance

4. Resistors Symbol ( R ) Resistance is synonymous with a pipe for water. The smaller the pipe the more resistance and less water flows. The larger the pipe the less resistance and more water can flow.Resistance

5. Resistors Symbol ( R ) Resistors A very low resistance allows a large amount of current to flow. Resistance is measured in ohms.Resistors

6. Symbol The unit of resistance is the ohm, which is equal to one volt per ampere, or one volt- second per coulomb.ohmvoltampere secondcoulomb

7. Resistors Symbol The inverse of resistance, 1/R, is conductance (G), and its SI unit is the siemens (also unofficially called the mho). conductanceSI siemensmho

8. Resistors Symbol The voltage measured across a resistor at a given instant is strictly proportional to the current passing through the resistor at that instant.

9. Resistors (types) Low Power Resistors

10. Resistors (types) High Power Resistors

11. Resistors (types) Variable Low Power Resistors

12. Resistors (types) Variable High Power Resistors

13. Resistors (types) Cutaway view of various types of resistors

14. Resistors Power Rating of Resistors

15. Resistors (Color Code)

16. Resistors Example 1: Determine the value and tolerance of the resistor 1st band: orange = 3 2nd band: orange = 3 3rd band: red = 2 (i.e. 10 2 ) 4th band: gold = 5% = 33 x 10 2 = 3300 Ohms = 3.3 kOhms

17. Resistors (Alphanumeric label)

18. Resistors Example 1: Determine the value and tolerance of the resistor Answer = 1.1 MOhms 1M1

19. End of Presentation