Ist
band
2nd
band
3rd
band
4th
band
Enter
band colours on the left to see the resistor value below
black
brown
red
orange
yellow
green
blue
violet
grey
white
black
brown
red
orange
yellow
green
blue
violet
grey
white
black
brown
red
orange
yellow
green
blue
violet
grey
white
gold
silver
gold
silver
red
Resistor
Accuracy =
±5%
±10%
±2%
Resistor Value
=
K
M
After
using the calculator, please select the nearest " preferred "
value
of resistor from the list below.
(eg. If calculated resistor = 135 then go up to 150):
PREFERRED
RESISTOR VALUES (these are the values you can normally obtain)
22
- 27 - 33 - 47 - 56 - 68 - 100 - 120 - 150 - 180 - 220 - 270
- 330 - 390 - 470 - 560 - 680 - 820 - 1000
Example Resistor:
(Try inserting its colours above & then checking
its value by using a real resistor & multimeter ).
1st
band blue = 6
2nd band
grey = 8
3rd band
red = 2 = number of zeros (00)
4th
band
gold = + or - 5 % accuracy
The
resistance = 6800 ohms
or 6.8K ohms. It has a + or - 5% accuracy or tolerance.
{blue "6" grey "8" red "00"and gold "+
or - 5%"},
By
using the unit "K ohms" and "M ohms" you can reduce
the number of 0's you need to write:
1K ohm = 1000 ohms and 1M ohm = 1000000 ohms.