🔧 电气工程工具

⚡ 断路器选型计算器Breaker Sizing 断路器选型计算器Breaker Sizing - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🏠 家庭用电负荷估算器Home Load Estimate 家庭用电负荷估算器Home Load Estimate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 LED 限流电阻计算（电气）Led Resistor 输入电源电压、LED正向压降与额定电流，按欧姆定律计算所需限流电阻阻值及其功耗，并给出常用标称功率建议，确保LED电路稳定安全工作。Led Resistor - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 RC 低通滤波截止频率计算（电气）Rc Filter RC 低通滤波截止频率计算器，由电阻与电容按 −3dB 求截止频率，用于滤波与信号调理设计。Rc Filter - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 RLC 串联谐振频率计算（电气）Rlc Resonance 输入电感 L 与电容 C，按 f=1/(2π√LC) 计算 RLC 串联电路谐振频率，用于滤波器与选频电路设计参考。Rlc Resonance - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 电线线径选择器Wire Gauge Selector 电线线径选择器Wire Gauge Selector - pick and choose online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical En... 🔌 三相功率计算Three-Phase Power Calculator 根据三相电压、电流、功率因数计算有功功率、无功功率、视在功率及电流偏差。Compute active and reactive three-phase power. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Enginee... 🔄 功率因数补偿Power Factor 输入当前有功功率、原功率因数与目标功率因数，计算需投入的并联补偿电容器容量（kvar），用于改善电网功率因数、降低线损与电费支出。Power Factor - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔋 功率因数补偿电容容量计算Calc Power Capacitance 输入有功功率与目标功率因数，计算所需并联补偿电容的容量（kvar），用于电气系统无功补偿与电能质量改善。Calc Power Capacitance - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Ele... 🔌 变压器容量选型Transformer Sizing 输入计算负荷（有功、无功或视在功率）与功率因数，计算所需配电变压器容量并对照标准kVA序列推荐合适型号，辅助供配电设计与设备选型。Transformer Sizing - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 导线电阻计算（电气）Wire Resistance 导线电阻计算器，由材料电阻率、长度与截面积求直流电阻，用于导线选型与线路损耗评估。Wire Resistance - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 📊 用电负荷曲线Load Curve 输入24小时各时段用电负荷(kW)，自动计算负荷率、峰谷差并绘制日负荷曲线。Load Curve - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. ⚡ 电压降计算Voltage Drop 电压降计算器，按低压线路参数求电压降并选择导线截面，支持单相/三相系统，用于配电设计。Voltage Drop - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 电流分流器计算（电气）Current Divider 输入总电流与并联支路电阻，按分流公式 I_x=I·R_total/R_x 计算各支路电流，用于电路分析与分流器设计。Current Divider - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. ⚡ 电缆载流量计算Cable Current Carrying Capacity Calculator 基于 IEC 60364 思路，根据导体材料、截面、敷设方式、环境温度及修正系数估算电缆持续载流量。Estimate cable ampacity by conductor and cross-section (IEC 60364). Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of t... 🔌 电阻分压器计算（电气）Voltage Divider 电阻分压器计算器，由两串联电阻求分压器输出电压，用于参考电压与信号衰减设计。Voltage Divider - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔋 蓄电池组串联/并联容量与电压Voltage Capacity Battery 输入单体电池电压与容量及串并联数量，计算电池组总电压与总容量，用于储能系统与电瓶组的配置设计。Voltage Capacity Battery - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineeri... 🔋 蓄电池组计算Battery Bank 输入单体电池电压、容量及串并联数量，计算电池组总电压、总容量、总能量并估算给定负载下的续航时间，适用于储能、UPS与电动车电源设计。Battery Bank - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 运算放大器增益计算（电气）Opamp Gain 运算放大器增益计算器，求反相与同相放大电路的闭环电压增益，用于模拟电路设计。Opamp Gain - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools.