I saw at Facebook a video 12 v Short Circuit Protection and same for 220 volts (https://www.facebook.com/108281974135756/posts/166052965025323/). It was advertised as a short circuit protection relay circuit that will turn off the power when output is short circuited. This seems to be a quite popular circuit idea, because I saw several very similar circuit designs →
This is a story of a a video digitizing circuit I built early 1990′s. It kind of worked, but was not practical then and much less useful nowadays. It is an interesting how simple circuit could be used for converting analogue composite video signal to digital for computer processing. This is the story of Dirt →
I had one DIY laboratory power supply that has served me well for a long time, but there are testes where I need another laboratory power supply. Instead of building a traditional power supply with linear regulator and large heatsink, I went to another route: build one from switch mode power supply and adjustable switch →
An adjustable regulated power supply is a necessary tool for an electronics laboratory. Here is a laboratory power supply 2.7-30V up to 4A I built has worked for 30 years ago and still going strong. Its function is to supply a stable voltage set by the voltage control potentiometer up to the current set by →
You can now add a virtual taste anf smell to a tasteless snack! Meiji University in Japan has developed a taste display that can artificially recreate any flavor by triggering the five different tastes on a user’s tongue. Researchers can also create virtual smells by electrocuting your nose. Electric Chopsticks Add Salty Flavor Where None →
A cable tie (also known as a hose tie, zip tie, or by the brand name Ty-Rap) is a type of fastener, for holding items together, primarily electrical cables or wires. The most common cable tie consists of a flexible nylon tape with an integrated gear rack, and on one end a ratchet within a →
Electronics prototyping is an important part of electronics device development. Prototyping means to build and test an early version of) an electronic circuit. Prototyping your product is all about learning. Each time you create a prototype version you will, or should, learn something new. Start with the most simple, low cost way to prototype your →
Signal processing is an electrical engineering subfield that focuses on analysing, modifying and synthesizing signals such as sound, images and biological measurements. Electronic signal processing was first revolutionized by the MOSFET and then single-chip digital signal processor (DSP). Digital signal processing is the processing of digitized discrete-time sampled signals. Processing is done by general-purpose computers →
Years ago you had to either build your own signal generator or buy usually a quite expensive signal generator. Lately there has been a push for very cheap ($15-25) digital function generator kits available from China. I wrote about some interesting function generator devices few years ago, and here is a closer look to one →
Prediction articles: 2020: A consumer electronics forecast for the year(s) ahead AI Chips: What Will 2020 Bring? CEO Outlook: 2020 Vision: 5G, China and AI are prominent, but big changes are coming everywhere Top 10 Tech Failures From 2019 That Hint At 2020 Trends – Last year’s tech failures often turn into next year’s leading →