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Several people (including me) were curious about that cheap inverter from the latest mailbag, so time to dive in and see what its ...

Watch this awesome smd soldering practice project featuring both SMD and through-hole components with LDR (Light ...

I've got a nice easy kit to play with today. But it's interesting to see how it does what it does. MISTAKE WARNING: the device at the ...

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A whistle-stop tour of how computers work, from how silicon is used to make computer chips, perform arithmetic to how programs ...

In this tutorial, I'll show you the basic soldering techniques, explain the process, and help you avoid common mistakes. First, I'll ...

Learn the difference between Class A, Class B, Class AB, and Class D audio amplifiers in this short video. See how each amplifier ...

An interesting electronic key / employee tracking device. Turns out, it's not too exciting inside, but you never know these things ...

I sat down to sort out the assortment of zener diodes from a mailbag a while back, and this is the result. Sadly, the result is a bit ...

Semiconductors are in everything from your cell phone to rockets. But what exactly are they, and what makes them so special?

Back in mailbag#80, I received a gift of this T-12 style soldering iron. Now that I've got my hands on some tips for it, I thought I'd ...

New version available at: http://www.youtube.com/watch?v=f5fwdGFBrwU Table of content: 00:05 Introduction 00:32 Jacks / test ...

This tutorial deals with the very basics of transistor amplifiers. Starting with different types of transistors, the video focuses on the ...

Playlist (with all related videos): https://www.youtube.com/playlist?list=PLhy2nHJciTED7xA_u5OyUj7oDEFf3BuZY This tutorial is ...

Table Of Content: 00:05 Introduction 01:31 Resistance measurement (direct method) 05:51 DC voltage measurement 09:39 AC ...

How do you analyze a circuit with resistors in series and parallel configurations? With the Break It Down-Build It Up Method!

February 24, 2025 -- In this episode of Chalk Talk, Sarah Alqaysi from Siemens and Amelia Dalton investigate the Siemens ...

Let's have a look at optical cabling. Download PowerPoint: https://itfreetraining.com/handouts/ap11/4c50.pptx Optical Cabling ...

No-nonsense breakdown of the original ESP32, ESP32-S3, ESP32-C3 and ESP32-C6, ESP32-H2, and upcoming P-series chips!

May 21, 2024 -- In this episode of Chalk Talk, Amelia Dalton, Mark Grierson from Digi, and Rob Reynolds from SparkFun ...

In this video tutorial series, young students learn about electronics by making hands-on projects. In this video, we will learn about ...

In this video, we will look at the different Arduino boards available on the Arduino web store. Chapters: 0:00 Intro 0:31 Most ...

This Tutorial describes two basic implementations of analog to digital converters, the flash converter and the successive ...

a teardown of a Samsung SER-6500 electronic cash register comments are welcome on original post: ...

Recently, I acquired a cassette tape player from my brother. But it kinda sucked. Here's how I made it better! Doctors hate him!