免费 · 建筑与行业计算
分压电路计算器.
计算电阻分压器的输出电压或所需电阻，考虑负载影响并给出标准阻值。
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使用方法: 分压电路计算器
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英语技术说明
Ideal resistors and a resistive load. Not a voltage regulator. Everything is calculated in your browser; nothing you type is uploaded.
Vout = Vin × R2 ÷ (R1 + R2), with R2 replaced by R2 ∥ R_load when a load is present. Currents and power in each resistor are shown.
12 V with R1 = 10 kΩ and R2 = 4.7 kΩ gives 3.8367 V; a 10 kΩ load pulls it down to 2.9072 V.