Hey friend, if you’ve ever blown up an LM317 while trying to pull more than an amp, or got frustrated because your “0–30 V” kit won’t go below 1.4 V, then this old-school but bullet-proof circuit is about to become your new best friend. This exact 1–30 V regulator built around the ancient-but-immortal LM723 precision … Read more
Hey friend, if you are looking for a reliable way to power your small electronics projects with a steady 5V at up to 2 amps, building a simple switch-mode power supply (SMPS) is a smart move. I have designed and troubleshot plenty of these as an electronics engineer, and they are efficient, compact, and way … Read more
Hey, remember how we talked about those handy little circuits that save you time troubleshooting electrical issues? Well, this blown fuse indicator is one of those gems. I looked at the diagram you shared, and it’s a clever design for monitoring a fuse in an AC mains setup. It uses a bi-color LED to indicate … Read more
Mosquitoes have always been a nuisance, not only because of the irritation they cause but also because they spread dangerous diseases such as malaria, dengue, and chikungunya. In recent years, mosquito killer bats (also called mosquito swatters or mosquito rackets) have become very popular as a handy household device. Unlike chemical repellents or coils, mosquito bats kill … Read more
Halogen lamps are widely used in motorcycles and bikes due to their high brightness and ability to provide better illumination on roads. A 12V, 35W halogen lamp is a common choice for headlamps in two-wheelers. However, one of the biggest problems with halogen lamps is their short lifespan. Frequent replacements not only cost money but … Read more
Are you fascinated by the world of radio frequencies and eager to build your own FM radio receiver? This DIY project is perfect for electronics enthusiasts, hobbyists, and learners looking to dive into the exciting realm of RF circuits. In this detailed guide, we’ll walk you through constructing a simple yet effective FM radio receiver … Read more