03 resistors and color code
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This document discusses resistor types and the resistor color code used to determine resistor values. It explains that resistors have either 4 or 5 color bands, with each band representing a digit, multiplier, or tolerance. The color bands correspond to numbers 0-9. The first band is the first digit, second is the second digit, third is the multiplier, and fourth is the tolerance. For values under 10 ohms, the multiplier is silver or gold. Some examples are provided of decoding resistor color codes to determine values and tolerances. Online apps for looking up resistor codes are also listed.
03 resistors and color code
- 1. Resistors and the Resistor Color Code
- 3. Carbon Composition ResistorsNotice the varying sizes (Wattage Ratings) and that some have four bands and some have five bands.
- 4. Variable Resistors: Potentiometers, Photoresistors
- 5. Resistor Color Code (4 Bands)(0) Black(1) Brown(2) Red(3) Orange(4) Yellow(5) Green(6) Blue(7) Violet(8) Grey(9) White1st DigitMultiplierTolerance2nd DigitTolerance Band: Brown = ±1%, Red = ±2%, Gold = ±5%, Silver = ± 10 %
- 6. Resistor Color Code (4 Bands)(0) Black(1) Brown(2) Red(3) Orange(4) Yellow(5) Green(6) Blue(7) Violet(8) Grey(9) White±5%000741st DigitMultiplierTolerance2nd DigitTolerance Band: Brown = ±1%, Red = ±2%, Gold = ±5%, Silver = ± 10 %
- 7. Resistor Color Code (4 Bands)(0) Black(1) Brown(2) Red(3) Orange(4) Yellow(5) Green(6) Blue(7) Violet(8) Grey(9) White-51±10%1st DigitMultiplierTolerance2nd DigitTolerance Band: Brown = ±1%, Red = ±2%, Gold = ±5%, Silver = ± 10 %
- 8. Calculating the Tolerance: Previous Example(0) Black(1) Brown(2) Red(3) Orange(4) Yellow(5) Green(6) Blue(7) Violet(8) Grey(9) White15±10%-1st DigitMultiplierTolerance2nd Digit15 X 10%= 1.5 ΩThe tolerance range for this resistor is 13.5 – 16.5 ΩTolerance Band: Brown = ±1%, Red = ±2%, Gold = ±5%, Silver = ± 10 %
- 9. Resistor Color Code (4 Bands): Less than 10 Ω(0) Black(1) Brown(2) Red(3) Orange(4) Yellow(5) Green(6) Blue(7) Violet(8) Grey (9) White (.01) Silver(.1) Gold±5%65*.1R =5.6 ΩA resistor that has a value less than 10 Ω will be silver or gold in the multiplier band.1st DigitMultiplierTolerance2nd DigitTolerance Band: Brown = ±1%, Red = ±2%, Gold = ±5%, Silver = ± 10 %
- 10. Resistor Color Code (5 Bands)(0) Black(1) Brown(2) Red(3) Orange(4) Yellow(5) Green(6) Blue(7) Violet(8) Grey(9) White000±2%6821st DigitMultiplierTolerance3rd Digit2nd DigitTolerance Band: Brown = ±1%, Red = ±2%, Gold = ±5%, Silver = ± 10 %
- 11. Online Color Code Appshttp://www.dannyg.com/examples/res2/resistor.htmhttp://samengstrom.com/nxl/3660/4_band_resistor_color_code_page.en.html
- 12. Check for UnderstandingThrow out a few resistors to students and determine values as a class.Give the students the values and then have them determine the colors of the bands.Resistor Color Code Worksheet and Lab