First, search a topic. Then, pick one guide and finish a quick task. Afterward, use the checklist to confirm the result. Additionally, each article links to tools and study maps, so you can learn fast and act with confidence.
To start, browse the latest posts. Then, pick one guide and try a single task. Afterward, use the checklist to confirm the result. In addition, each article links to tools and study maps, so you can learn and act with confidence.
All articles
LEDs Basics: How They Work and Why Better
▶️ Watch now: Why are LEDs brighter and cheaper to run? (60 seconds, zero fluff) Instead of heating a filament, […]
Protective Relay: Simple Guide for Safer Power
▶️ Watch now: How a protective relay saves your circuit Ever seen this? You start a new AC. The breaker […]
How to Weatherproof Your Home: Windows and Doors Made Easy
Ever had this happen to you?A big rainstorm rolls in, and suddenly you hear that drip-drip-drip near your window. Or […]
Current & Voltage for DIY Enthusiasts : Unlock the Basics
Watch Now: What’s the Difference Between Current and Voltage? This quick video explains the essentials of current and voltage, tailored […]
High vs Low Charging Current: What’s Best for Your Battery?
▶️ Watch now: Why Your Battery Dies Faster, It’s the Current, Not Just the Age It’s not just age, too […]
The Truth About Power Factor and Why Electric Companies Care
▶️ 立即觀看：交流變直流有多難？整流器一次看懂！ 你知道嗎？手機、筆電、各種電子設備，其實都吃「直流電」。但插座送來的卻是交流電——這中間， 整流器 扮演了關鍵角色！ 本集帶你秒懂整流器的工作原理，從半波、全波到橋式整流，看它如何讓電流穩定下來，撐起整個系統。 Ever got hit with a surprise fee on your electric bill, even though you […]
Waveform Types Explained: Sine, Square, and Sawtooth Made Simple
▶️ 立即觀看：交流變直流有多難？整流器一次看懂！ 你知道嗎？手機、筆電、各種電子設備，其實都吃「直流電」。但插座送來的卻是交流電——這中間， 整流器 扮演了關鍵角色！ 本集帶你秒懂整流器的工作原理，從半波、全波到橋式整流，看它如何讓電流穩定下來，撐起整個系統。 Ever seen those wavy lines on a heart monitor? Or the sound waves jumping […]
Save Energy, Extend Motor Life: Why VFDs Are a Game-Changer
▶️ 立即觀看：交流變直流有多難？整流器一次看懂！ 你知道嗎？手機、筆電、各種電子設備，其實都吃「直流電」。但插座送來的卻是交流電——這中間， 整流器 扮演了關鍵角色！ 本集帶你秒懂整流器的工作原理，從半波、全波到橋式整流，看它如何讓電流穩定下來，撐起整個系統。 What Are VFDs and How Does It Control a Motor? You’ve probably heard people […]
Do Home Wires Really Wear Out? The Truth About Old House Wiring In The U.S.
Ever thought about how long the wiring in your home has been there?People upgrade their sofas, swap out old AC […]
About this library
This page is your index for all electrical guides on Engineer Tsai. Moreover, you can search and filter tutorials covering basics, home wiring, components, safety and troubleshooting. Because each guide keeps theory short and focuses on steps, diagrams and checklists, you learn faster. As a result, you can move from reading to doing with less guesswork.
Topics we cover
Electrical fundamentals · Ohm’s law · AC/DC basics · Home wiring and outlets · Protective devices and relays · Meters and safe measurement · Components and LED drivers · Troubleshooting common faults and practical fixes.
How to use this page
- First, use the search box or category pills to find a topic.
- Next, open one guide and complete a single task with the checklist.
- Finally, save the tools and diagrams linked inside each article for later jobs.
FAQ
Where should beginners start?
For beginners, start with Tutorials, then the “Electrical Basics” path; after that, move to wiring and safety.
Are these tutorials safe for DIY?
Yes, but always follow safety notes; if unsure, consult a licensed professional.
What tools do I need?
Typically, a non-contact tester, a multimeter, insulated screwdrivers and proper PPE are enough.
What’s the difference between Articles and Tutorials?
In short, Tutorials are step-by-step lessons, whereas Articles are quick reads for specific topics.
Can I use these guides for my home wiring?
However, codes differ by region; therefore, always follow your local electrical code.
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