为扎实学习而记的笔记。
一本公开的个人笔记本。指南、讲解和工具按主题整理，每一条说法都可以查证。
主题
电气理论和计算工具：阻抗、交流功率和三相电路。
关于 3D 打印的笔记：材料、切片、校准，以及如何设计容易打印的零件。
暂无内容。
关于信息如何传递的笔记：信号、调制、无线电和网络。
暂无内容。
计算机科学笔记：算法、数据结构、系统，以及它们背后的数学。
暂无内容。
全部条目
- 电气工具
Balanced Three-Phase Power Calculator英文
Calculate apparent, real, and reactive power from line voltage, line current, and power factor in an ideal balanced three-phase system.
- 电气工具
LED resistor calculator英文
Pick the series resistor for an LED from your supply and datasheet, with the nearest E24 value, real current, resistor watts, and what to check with a meter.
- 电气指南
Ohm's law: how voltage, current and resistance relate英文
What Ohm's law says, why V = IR works for a resistor and not an LED, and how to use it on a real circuit, with a live one-circuit explainer.
- 电气工具
Series RLC Circuit Analyzer英文
Calculate complex impedance, phase angle, RMS current, and AC power for an ideal series RLC circuit while keeping the formulas visible.
- 电气指南
What is impedance? How AC circuits oppose current英文
Impedance is how a circuit opposes alternating current. See how resistance and reactance combine, why current lags or leads, and how Z = V/I extends Ohm's law.