electronics resistors and color codes

2. Color bands reveal the valueColor bands reveal the value
 11stst
band = valueband = value
 22ndnd
band = valueband = value
 33rdrd
band = multiplier (number of decimalband = multiplier (number of decimal
places to move over)places to move over)
 44thth
band = percent toleranceband = percent tolerance

3.  BlackBlack 00
 BrownBrown 11
 RedRed 22
 OrangeOrange 33
 YellowYellow 44
 GreenGreen 55
 BlueBlue 66
 VioletViolet 77
 GreyGrey 88
 WhiteWhite 99
ToleranceTolerance
 GoldGold + or -+ or - 5%5%
 SilverSilver + or - 10%+ or - 10%
 No bandNo band + or - 20%+ or - 20%

4. less than 10 Ohmsless than 10 Ohms
33rdrd
band multiplierband multiplier
 GoldGold 0.10.1 move decimal 1 place leftmove decimal 1 place left
 SilverSilver 0.010.01 move decimal 2 places leftmove decimal 2 places left

11. Precision resistors with 5 bandsPrecision resistors with 5 bands
 11stst
bandband digitdigit
 22ndnd
bandband digitdigit
 33rdrd
bandband digitdigit
 44thth
bandband multipliermultiplier
 55thth
bandband tolerancetolerance  RedRed + or - 2%+ or - 2%
 BrownBrown + or - 1%+ or - 1%
 GreenGreen + or - 0.5%+ or - 0.5%
 BlueBlue + or - 0.25%+ or - 0.25%
 VioletViolet + or - 0.1%+ or - 0.1%

15. Power RatingsPower Ratings
 Power = amount of energy dissipated = heatPower = amount of energy dissipated = heat
 The larger the surface area of a resistor, theThe larger the surface area of a resistor, the
more heat it can dissipate without burningmore heat it can dissipate without burning
upup

17. Resistor CompositionResistor Composition
 Different resistors are constructedDifferent resistors are constructed
differently, resulting in different properties.differently, resulting in different properties.
 Vary in tolerance, temperature stabilityVary in tolerance, temperature stability
and priceand price

19. Psych! These are inductors, not resistors,
but the same color code applies