⚡ 电子电路工具

🔥 PCB功耗温升估算Pcb Power PCB 功耗温升估算器，基于散热面积与对流条件按经验模型估算板载温升，用于散热设计。Pcb Power - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. 🔌 PCB线宽载流PCB Trace Width & Current Calculator (IPC-2221) PCB 线宽载流计算器，按 IPC-2221 由电流、铜厚与允许温升求最小走线线宽，用于 PCB 布线设计。Find PCB trace width for a given current (IPC-2221). Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics ... 🔌 PCB阻抗叠层PCB Impedance Stackup PCB 阻抗叠层计算器，按 IPC-2141 由介电常数、线宽、介质厚度与铜厚求微带线特性阻抗，用于阻抗控制。Compute PCB impedance stackup by IPC-2141 from dielectric constant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of t... 🔌 RC充放电时间常数Calc Time 2 RC 时间常数计算器。输入电阻 R 与电容 C，计算 RC 电路时间常数 τ、各阶段充放电时间曲线及截止频率，是暂态分析、延时电路与滤波器设计的基础工具。Calc Time 2 - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics ... ⚡ RC时间常数计算RC Time Constant Calculate RC 时间常数计算器，按 τ=R×C 求充放电时间常数与电压曲线，用于暂态电路分析。RC Time Constant Calculate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Ci... 🔧 SMT钢网设计Smt Stencil SMT 钢网设计器，计算开孔尺寸、面积比、宽厚比与焊膏体积，用于表面贴装钢网设计。Smt Stencil - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. 🔌 二极管正向压降Current Pressure Drop 二极管正向压降计算器，按正向电流、温度与类型估算压降与功耗，辅助电源与整流电路设计。Current Pressure Drop - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuit... 🔀 分压电路计算Voltage Divider 分压电路计算器。支持两电阻分压、带载输出与电位器三种模式，输入阻值与输入电压即得输出电压，并可评估负载偏差，是参考电压与偏置电路设计常用工具。Voltage Divider - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. 🔌 功放功率失真Estimate Power 1 输入电源电压与负载阻抗，选择单端或 BTL 功放拓扑，计算理论最大输出功率并给出低失真工作功率建议，辅助功放设计选型。Estimate Power 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. 🔌 天线频率增益Frequency 13 天线频率增益计算器，按频率与天线长度求波长、理想长度、增益与驻波比，辅助射频天线设计与匹配。Frequency 13 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. 🔌 振荡频率计算Frequency 12 选择振荡器类型（RC 文氏桥、LC 考毕兹或晶体），输入相应元件参数，计算振荡频率，是信号源与时钟电路设计的基础工具。Frequency 12 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. 📡 晶振分频计算Crystal Divider 晶振分频计算器，求分频系数与输出频率并支持 PLL 倍频分频，用于时钟与频率合成设计。Crystal Divider - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. 🔌 晶振负载电容匹配Capacitance 晶振负载电容匹配计算器。输入晶振标称负载电容 CL 与电路杂散电容，计算所需外接匹配电容值，确保晶振稳定起振并工作在标称频率，适合时钟电路调试。Capacitance - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. ⚡ 欧姆定律计算Ohms Law 欧姆定律计算器。支持选择求解电压、电流或电阻，输入其余两量按 V = I×R 及其变形即时互求，是电路基础计算与故障排查的常用工具。Ohms Law - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. 🔌 滤波截止频率Frequency 11 滤波截止频率计算器，支持 RC 与 LC 滤波器按元件参数求 −3dB 截止频率，用于滤波器设计。Frequency 11 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools. 🔋 电容计算器Capacitance Calculate 电容综合计算器。支持串联、并联、RC 充放电与时间常数等多种模式，输入电容参数即时得出等效值或时间常数，是电路设计与电容选型的一站式辅助工具。Capacitance Calculate - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Elec... 🔌 电容（代码/耐压）换算Capacitance 解读电容三位数字代码对应的皮法值，并在 pF、nF、μF 间换算，同时给出常见耐压标注含义，适合电子选型与读件。Capacitance - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronic... 🔌 电感感抗频率Calc Frequency 根据电感量与频率计算感抗，校验单位换算（1μH=10⁻⁶H）并观察感抗随频率变化，用于滤波与振荡电路参数估算，纯前端。Calc Frequency - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics... 🔌 电源效率LDO/DCDCPower Supply Efficiency (LDO / DCDC) 选择 LDO 或 DCDC 电源类型，输入输入与输出电压及电流，分别计算转换效率与功耗，辅助电源拓扑选型与热设计评估。Compute LDO/DCDC power efficiency from in/out voltage and current. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of th... 🔌 电路分析计算Circuit Calculator 电路分析计算器。支持 RLC 谐振、有功/无功/视在功率、分贝与电抗等模式综合计算，输入电路参数即时输出结果，适合电子电路教学与调试的快速演算。Circuit Calculator - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electro... 🔌 电阻色环读数Resistance Resistor 电阻色环读数器，选择 4/5 环各环颜色自动计算阻值与公差，辅助识别色环电阻。Resistance Resistor - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits ... 🔌 电阻计算器Resistance Calculate 电阻综合计算器。支持串联、并联、色环识读与分压四种模式，输入多个电阻或色环参数即可得出等效阻值或分压比，适合电阻选型与电路配阻。Resistance Calculate - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Elect... 🎨 色环电阻识别Resistor Color Code 色环电阻识别器，支持 4/5 环色码识别与阻值双向换算，辅助电子元件识别。Resistor Color Code - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits ... 🔌 运放增益带宽设计Bandwidth 运放增益带宽设计工具。输入所需闭环增益与信号频率，计算所需的增益带宽积 GBP 并给出选型建议，帮助电子工程师快速完成运放带宽校核与电路设计。Bandwidth - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Electronics & Circuits tools.