Build a $10 Adjustable Power Supply with LM317
Stop scavenging wall adapters. Build a rock-solid adjustable power supply for under $10 using the legendary LM317 IC.
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The Physics of Transformers: Core, Coils, and Magnetic Flux
No moving parts, no batteries — just coils and iron. Here's the physics that makes transformers almost feel like magic.
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Control Real-World Devices with Raspberry Pi GPIO
Learn how to use Raspberry Pi GPIO to read a button press and control an LED and relay for real smart-home automation.
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Thermal Runaway in Transistors: Causes & Prevention
Thermal runaway is a dangerous feedback loop in transistors that leads to failure. Learn the physics behind it and how to prevent it.
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