How To Read Color Codes of Resistor

Colors

Here is the table with the colors and numbers. As you can see they are:

• BLACK:     0
• BROWN:   1
• RED:           2
• ORANGE:   3
• YELLOW:   4
• GREEN:       5
• BLUE:          6
• VIOLET:      7
• GREY:          8
• WHITE:        9

But this is not for all colors. From right to left the second color is multiplier. Digits from the first colors must be multiplied with the number of this color.

• BLACK:     1
• BROWN:   10
• RED:           100
• ORANGE:   1000
• YELLOW:   10000
• GREEN:       100000
• BLUE:          1000000
• GOLD:          0.1
• SILVER:       0.01

And the last color: This is tolerance. Tolerance is the precision of the resistor and it is given as a percentage. For example a 390 resistor with a tolerance of ±10% will have a value within 10% of 390, between 390 - 39 = 351 and 390 + 39 = 429 (39 is 10% of 390).

• BROWN:   1%
• RED:           2%
• GOLD:        5%
• SILVER:     10%
• NOTHING:  20%

How to use Digital Multi meter?

1. Put the black probe into the common terminal and the red probe into the terminal used to measure volts and ohms.
2. Set the multimeter to the same setting you use to test diodes.
3. Turn the power off to the circuit.
4. Place the leads on either side of the section of circuit you're testing.
5. To check diode put multimeter in diode mode.
6. To check any resistance like capacitors,transformer,preset-er, put multi-meter in ohm mode.