🔧 電氣工程工具

⚡ 斷路器選型計算器Breaker Sizing 斷路器選型計算器Breaker Sizing - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🏠 家庭用電負荷估算器Home Load Estimate 家庭用電負荷估算器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 限流電阻計算（電氣）Led Resistor 輸入電源電壓、LED正向壓降與額定電流，按歐姆定律計算所需限流電阻阻值及其功耗，並給出常用標稱功率建議，確保LED電路穩定安全工作。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 低通濾波截止頻率計算（電氣）Rc Filter RC 低通濾波截止頻率計算器，由電阻與電容按 −3dB 求截止頻率，用於濾波與信號調理設計。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 串聯諧振頻率計算（電氣）Rlc Resonance 輸入電感 L 與電容 C，按 f=1/(2π√LC) 計算 RLC 串聯電路諧振頻率，用於濾波器與選頻電路設計參考。Rlc Resonance - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 電線線徑選擇器Wire Gauge Selector 電線線徑選擇器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... 🔌 三相功率計算Three-Phase Power Calculator 根據三相電壓、電流、功率因數計算有功功率、無功功率、視在功率及電流偏差。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... 🔄 功率因數補償Power Factor 輸入當前有功功率、原功率因數與目標功率因數，計算需投入的並聯補償電容器容量（kvar），用於改善電網功率因數、降低線損與電費支出。Power Factor - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔋 功率因數補償電容容量計算Calc Power Capacitance 輸入有功功率與目標功率因數，計算所需並聯補償電容的容量（kvar），用於電氣系統無功補償與電能質量改善。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... 🔌 變壓器容量選型Transformer Sizing 輸入計算負荷（有功、無功或視在功率）與功率因數，計算所需配電變壓器容量並對照標準kVA序列推薦合適型號，輔助供配電設計與設備選型。Transformer Sizing - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 導線電阻計算（電氣）Wire Resistance 導線電阻計算器，由材料電阻率、長度與截面積求直流電阻，用於導線選型與線路損耗評估。Wire Resistance - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 📊 用電負荷曲線Load Curve 輸入24小時各時段用電負荷(kW)，自動計算負荷率、峯谷差並繪製日負荷曲線。Load Curve - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. ⚡ 電壓降計算Voltage Drop 電壓降計算器，按低壓線路參數求電壓降並選擇導線截面，支持單相/三相系統，用於配電設計。Voltage Drop - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 電流分流器計算（電氣）Current Divider 輸入總電流與並聯支路電阻，按分流公式 I_x=I·R_total/R_x 計算各支路電流，用於電路分析與分流器設計。Current Divider - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. ⚡ 電纜載流量計算Cable Current Carrying Capacity Calculator 基於 IEC 60364 思路，根據導體材料、截面、敷設方式、環境温度及修正係數估算電纜持續載流量。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... 🔌 電阻分壓器計算（電氣）Voltage Divider 電阻分壓器計算器，由兩串聯電阻求分壓器輸出電壓，用於參考電壓與信號衰減設計。Voltage Divider - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔋 蓄電池組串聯/並聯容量與電壓Voltage Capacity Battery 輸入單體電池電壓與容量及串並聯數量，計算電池組總電壓與總容量，用於儲能系統與電瓶組的配置設計。Voltage Capacity Battery - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineeri... 🔋 蓄電池組計算Battery Bank 輸入單體電池電壓、容量及串並聯數量，計算電池組總電壓、總容量、總能量並估算給定負載下的續航時間，適用於儲能、UPS與電動車電源設計。Battery Bank - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools. 🔌 運算放大器增益計算（電氣）Opamp Gain 運算放大器增益計算器，求反相與同相放大電路的閉環電壓增益，用於模擬電路設計。Opamp Gain - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electrical Engineering tools.