Collaborate Disseminate
Many people who get analog electronics still struggle a bit to design oscillators. Even common simulators often need a trick to simulate some oscillating circuits. The Barkhausen criteria state that …read more Continue reading Oscillator Negativity is a Good Thing
If you need to cool something, the gold standard is using a gas compressor arrangement. Of course, there are definite downsides to that, like weight, power consumption, and vibrations. There …read more Continue reading Better Solid State Heat Pumps Through Science
There is always the promise of using more computing power for a single task. Your computer has multiple CPUs now, surely. Your video card has even more. Your computer is …read more Continue reading Going to the (Parallel) Chapel
Your design task, should you decide to accept it: given an input voltage, square it. Ok, that’s too hard since squaring 8 volts would give you 64 volts, so let’s …read more Continue reading Challenge: Square a Voltage
Who knows what you’ll find in a second-hand shop? [Zeal] found some old keyboards made to fit early Alcatel phones from the year 2000 or so. They looked good but, …read more Continue reading Phone Keyboard Reverse Engineered
[Ralph] is excited about impedance matching, and why not? It is important to match the source and load impedance to get the most power out of a circuit. He’s got …read more Continue reading Pi Networks the Smith Chart Way
In theory, writing a Linux device driver shouldn’t be that hard, but it is harder than it looks. However, using libusb, you can easily deal with USB devices from user …read more Continue reading Rust Drives a Linux USB Device
[Claywoven] mostly prints with ceramics, although he does produce plastic inserts for functional parts in his designs. The ceramic parts have an interesting texture, and he wondered if the same …read more Continue reading Ceramic Printing Techniques for Plastic
If you ever look at projects in an old magazine and compare them to today’s electronic projects, there’s at least one thing that will stand out. Most projects in “the …read more Continue reading The Tao of Bespoke Electronics
If you do anything with electronics or electricity, it is a good bet you have a multimeter. Even the cheapest meter today would have been an incredible piece of lab …read more Continue reading Do You Need a Bench Meter?