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  1. #1

    resistor colour codes

    ok , i would really appreciate some help , i need 18k resistors so i bought a variety pack , now i ve got myself into somewhat of a mess because i dont quite get how the colour coding works ,i ve got about a 100 resistors in a dish and i know the two i need are in there somewhere ,,
    can anyone tell me the colours i need for an 18k resistor , ive got some documentation so i ll go back to that ,but any pointers will be greatly appreciated
    thanks

  2. #2
    Join Date
    Dec 2003
    Posts
    24220
    brown grey orange BBROYGBVGW I can recite you a ditty, but its not politically correct
    Link http://images.google.com/images?q=RE...mages&ct=title
    Al.
    I found one that can be printed:
    Here's the mnemonic "Bright Boys Rave Over Young Girls But Veto Getting Wed.
    . Black, Brown, Red, Orange, Yellow, Green, Blue, Violet, Grey, White
    <=> 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  3. #3
    thanks for the quick reply ,i just got done searching google for a resistor calculator for a joke and sure enough there are a bunch of them online ,and thats exactly what i got brown grey orange
    internet godda love it

    http://hfradio.org/resistor/
    http://www.dannyg.com/examples/res2/resistor.htm

  4. #4
    First two color bands are numbers, the third band is the number of zeros, forth band is the tolerance.

    Black = 0, or no zeros
    Brown = 1, or 1 zero
    Red = 2, or 2 zeros
    Orange = 3, or 3 zeros
    Yellow = 4, or 4 zeros
    Green = 5, or 5 zeros
    Blue = 6, or 6 zeros
    Violet = 7
    Grey = 8
    White = 9

    Silver = 10% tolerance (4th band)
    Gold = 5% tolerance (4th band)
    No 4th band is 20% tolerance.

    Example: A 47K 5% resistor is YELLOW, VIOLET, ORANGE and GOLD

    Standard 10% values are:
    1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, and 8.2
    Standard 5% values are all 10% values plus:
    1.1, 1.3, 1.6, 2.0, 2.4, 3.0, 3.6, 4.3, 5.1, 6.2, 7.5 and 9.1

    POP QUIZ:
    (1) What are the color bands for a 680K 5% resistor?
    (2) What are the color bands for a 12 Ohm 10% resistor?
    (3) What are the color bands for a standard 5,000 Ohm resistor? (trick question)
    (4) You need a 3,184 Ohm resistor. Color bands for the closest 10% part?
    (5) For (4), closest 5% part color bands?

    Mariss

  5. #5
    Join Date
    Mar 2004
    Posts
    1147
    if you can find plans for nuclear reactors and jet engines online... and 14 year old kids who have made them, you can probably find resistor charts, tap\drill charts, ansi code charts, etc...

    its amazing..

  6. #6
    This is helpfull little programm, enjoy
    Attached Files Attached Files

  7. #7
    Join Date
    Jul 2005
    Posts
    442
    Bad Boys Rape Our Young Girls But Violet Gives Willingly for Gold or Silver

    Gold in the multiplier band is -1 (0.1)
    Silver in the multiplier band is -2 (0.01)

    http://xtronics.com/kits/rcode.htm#PC_fasists

    Aaron

  8. #8
    Join Date
    Apr 2006
    Posts
    402
    Being color blind my natural choice is a multimeter, so there's actually no need to know all this. Shifted to SMD, there it's written on.

    Carel

  9. #9
    Join Date
    Jan 2005
    Posts
    302
    Al, Here's a couple of good alternatives.

    Bad Boys Race Our Young Girls Behind Victory Garden Walls
    Bad Beer Rots Our Young Guts But Vodka Goes Well

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