• 發信人: es@NaiveAge (愛ズ雪 戀メ白), 信區: ME-4C
  • 標 題: Re: 有人知道電阻值怎麼看嗎？
  • 發信站: 中央機械純真年代 (Sun Feb 20 08:56:34 2000) rev 89/3/18
  • 轉信站: NaiveAge
  • ※ 引述《CPR@NaiveAge (今天一定要洗澡~~~~~)》之銘言：
  • : 有沒有人還記得電阻值怎麼用上面的顏色看它的歐姆值呀？
  • : 顏色的順序是什麼咧？
  • Color.. | 1st Band | 2nd Band | 3rd Band | * Multiplier | Tolerance
  • Black.. | ...........0 | .............0 | .............0 | .......10^0=1 |
  • Brown. | ..........1 | ..............1 | .............1 | .....10^1=10 | 1% (F)
  • Red..... | ..........2 | ..............2 | .............2 | ...10^2=100 | 2% (G)
  • Orange | ..........3 | ..............3 | .............3 | ....10^3=1K |
  • Yellow | ..........4 | ..............4 | .............4 | ...10^4=10K |
  • Green.. | ..........5 | ..............5 | .............5 | .10^5=100K | 0.5% (D)
  • Blue.... | ..........6 | ..............6 | .............6 | ....10^6=1M | 0.25% (C)
  • Violet.. | ..........7 | ..............7 | .............7 | ..10^7=10M | 0.10% (B)
  • Grey.... | ..........8 | ..............8 | .............8 | 10^8=100M |
  • White.. | ...........9 | .............9 | .............9 | .....10^9=1G |
  • Gold.... | ................................................ | .... 10^-1=0.1 | 5% (J)
  • Silver... | ................................................ | .. 10^-2=0.01 | 10% (K)

    • *Carbon Film 電阻精度不足 (公差只能做到 金 銀 不能做到 紅),不用這第三條數值

  • 例 1st band 2nd band Multipiler Tolerance
  • brown black red gold
  • 1 0 * 10^2 +-5% = 1000 ohms +-5%
    • I>
  • 1 0 * 10^2 +-5% = 1000 ohms +-5%