Electronics Engineering Tools
110+ engineering calculators spanning RF, power, optics, IC test, and more.
Differential Pair Impedance Calculator
/en/differential-impedance
Z₀(single) = (60/√ε_eff) × ln(8h/W + 0.25W/h)
View all formulas
Impedance Calculator
/en/impedance-calculator
Z = √((R + jωL)/(G + jωC))
View all formulas
NE555 Timer Calculator
/en/ne555-timer-calc
f = 1/(ln(2) × C × (R_A + 2R_B))
View all formulas
Resistor Color Code Decoder
/en/resistor-color-code
Value = (Digit1 × 10 + Digit2) × Multiplier
View all formulas
SMD Code Decoder
/en/smd-code-decoder
Value = Digits × 10^Multiplier
View all formulas
Skin Depth Calculator
/en/skin-depth-calc
δ = 1 / √(π×f×μ×σ)
View all formulas
differential-impedance
差分对阻抗计算
高速总线设计
Formulas
基础微带线单端阻抗
Example: W/h=2 → Z₀≈50Ω
线间距S影响差分阻抗
Example: S/h=0.5 → Z_diff≈94Ω
Calculation Steps
- 1
1. 输入线宽W、高度h与间距S
- 2
2. 先计算单端阻抗Z₀
- 3
3. 应用耦合因子获得差分阻抗
- 4
4. 调整S维持目标差分阻抗
Use the calculator above to validate numeric results.