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About Why This Circuit Works When It Shouldn’t
Explore Why This Circuit Works When It Shouldn’t with 919,305 views, 25,841 likes, and 869 comments. Experience the impact of this video content that has captured audience attention.
Learn how to extract useful energy from dead batteries,. Check out PCBWAY➡️ https://www.pcbway.com/ for PCB's, 3D printing and CNC at expectational value and design PCB's with Altium ➡️ http://altium.com/yt/engineeringmindset In this video, we explain how a simple Joule Thief circuit boosts low voltage using inductors, transistors, and Faraday’s law. Learn how it works, why it works, and how to build one yourself with a DIY kit or custom PCB. Learn how transistors, inductors, toroid transformers, LED and resistors work. 🛠️ Build the kit yourself 🛠️ Want to build the kit at home, click here:👉 https://tinyurl.com/Joule-Thief-Kit Want to order just the PCB, click here:👉 https://tinyurl.com/Get-PCB-only 🎁 Design, review, and manage PCBs in one connected environment with Altium Designer. Get a 30-day free trial here ➡️ http://altium.com/yt/engineeringmindset Check out our article: ➡️ https://theengineeringmindset.com/why-this-circuit-works-when-it-shouldnt/ ⚡🛠️ TOOLS YOU NEED 🛠️⚡ ******************************* Get this electronics book ➡️ https://amzn.to/41cCJPk Professional Multimeter -➡️ https://amzn.to/3xu2Vaw Good multimeter -➡️ https://amzn.to/3xrbuTd Professional clamp meter ➡️ https://amzn.to/4140FnK Good Clamp meter ➡️ https://amzn.to/3xqt2is Outlet tester ➡️- https://amzn.to/3kavg2l Energy monitoring plug ➡️ https://amzn.to/3SkfPl7 Battery tester -➡️ https://amzn.to/3S3fHWI Basic electronics ➡️ kit https://amzn.to/3xuLiqS MY FAVOURITE GEAR 🎥 My camera - https://amzn.to/3YCZ7Q9 🎤 My Microphone - https://amzn.to/3YYXsUC ⌨️ My Keyboard - https://amzn.to/3lBsl33 🖥️ My monitor - https://amzn.to/415BGjW 🎧 My headphones - https://amzn.to/3lN7R7u 👋 SOCIALISE WITH US 👋 ******************************* 👉FACEBOOK: https://facebook.com/theengineeringmindset/ 👉TWITTER: https://twitter.com/TheEngMindset 👉INSTAGRAM: https://instagram.com/engineeringmindset/ 👉WEBSITE: Http://TheEngineeringMindset.com [0:00] Dead Battery Powers an LED? How This Is Possible [0:18] The Clever Joule Thief Circuit Explained [0:28] How to Build This DIY LED Booster Circuit [0:45] Circuit Components Overview (Switch, Toroid, Resistor, Transistor) [1:10] Current Flow in the Circuit: Path A vs Path B [2:10] How the Joule Thief Starts Oscillating [3:32] How a Resistor Works in This Circuit [4:13] How a Transistor Works as an Electronic Switch [5:35] Why the Toroid Coil Is So Important [6:00] Electromagnetic Fields, Coils, and Inductors Explained [7:20] Self-Inductance: Why Current Cannot Change Instantly [8:24] Why a Ferrite Core Improves Inductor Performance [8:40] Faraday’s Law and Mutual Inductance Explained [9:32] How a Changing Magnetic Field Induces Voltage [10:20] Lenz’s Law Explained with Coil and Magnet Examples [11:15] Coil Polarity and Induced Current Direction [12:17] Why the Two Toroid Windings Must Oppose Each Other [14:23] Full Joule Thief Circuit Operation Step by Step [15:10] Core Saturation: Why the Transistor Suddenly Switches Off [16:03] Inductive Kickback and the High Voltage Spike Explained [16:41] How the LED Turns On from a Dead Battery [17:07] Why the LED Looks Continuous Even Though It Is Pulsing [17:22] How LEDs Work: Diodes, Threshold Voltage, and Light Emission [18:21] Why a White LED Proves Voltage Boosting [18:31] DIY Kit and PCB Build Options [19:33] Breadboard Prototype and PCB Soldering Guide [20:21] North Pole Coil Direction Answer
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