色环电阻计算器 — 公式
## Resistor Color Codes
### 4-Band System
- Band 1: First digit
- Band 2: Second digit
- Band 3: Multiplier (10^x)
- Band 4: Tolerance
Black=0, Brown=1, Red=2, Orange=3, Yellow=4, Green=5, Blue=6, Violet=7, Grey=8, White=9
### 4-Band System
- Band 1: First digit
- Band 2: Second digit
- Band 3: Multiplier (10^x)
- Band 4: Tolerance
Black=0, Brown=1, Red=2, Orange=3, Yellow=4, Green=5, Blue=6, Violet=7, Grey=8, White=9
计算示例
Yellow(4), Violet(7), Red(x100).
- Base = 4 x 10 + 7 = 47
- Multiplier = 10^2 = 100
- Resistance = 47 x 100 = 4700 ohms = 4.7k