This article plunges you into the mesmerrizing world of early radio technology through the assembly and analysis of a DIY spark gap transmitter. This project offers a practical insight into the fascinating dynamics of damped harmonic oscillators and explains charasteristics such the logarithmic decrement, decay rate, damping factor, q factor, and beyond. Prepare to spark […]
Continue reading…
Electronics 101
Fundamental electronics knowledge and basic articles (not only) for beginners.
Total Harmonic Distortion (THD) from dBc
How to calculate THD from dBc This article supplements to my article titled THD Measurement with an Oscilloscope and FFT, which appeared in Elektormagazine [1]. Here I will explain how the formula to calculate THD-F from relative power values (in dBc) was derrived from the standard voltage-ratio formula. A more in-depth explanation of the entire […]
Continue reading…
Thermal Design Basics | Practical Example
Thermal design is one of those things engineers don’t really learn in school and hobbyists often don’t even think about. This article is going to show some basic math with a practical example. One of my portable police scanners has an external 6V jack. To use it in my car I used my standard linear […]
Continue reading…
Generating PWM Signals
In this video I’m showing how to generate a PWM signal that’s behaving proportionally to analog control signal. P.S. Watch out for the Dinosaur!
Continue reading…
What is a Gunnplexer? | Police Radar Gun
This video shows a couple of 10 GHz and 24 GHz gunnplexer, briefly explains what they do and shows how they can be used to determine an object’s speed.
Continue reading…
Lumped-Element Wilkinson Splitter / Combiner Design
This is a supplemental article to two of my videos on my YouTube channel about the theory and design of Wilkinson splitters and combiners. A Wilkinson divider is a specific class of power divider with high isolation between the output ports. This feature is particularly useful when used as a combiner. This article will show […]
Continue reading…