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Hey, if you’ve ever needed to top up a small Li-ion battery from a USB port without all the bells and whistles of a fancy charger, this circuit might be just what you’re looking for. It’s super basic, uses a BC558 PNP transistor as the main player, and keeps the component count low. Think of … Read more
If you’ve got a 12V 7Ah lead-acid battery sitting around, maybe from a UPS system or a small solar setup, and you need a reliable way to charge it without overdoing things, this circuit is worth a look. It’s built around the LM317, a versatile voltage regulator that’s been a staple in DIY electronics for … Read more
Hey there! If you’re looking to build a solid audio amplifier that can drive an 8-ohm speaker with some real power, this circuit using the 2N3055 transistor is a great option. It’s a classic design that’s been around for years, and it’s perfect for learning about transistor amplification stages. The whole thing runs on a … Read more
Hey there! If you want to put together a straightforward power amplifier that uses MOSFETs, this circuit is a solid choice. It runs on a dual power supply and works well for amplifying audio signals with good power output. The design is simple, and it teaches you a lot about push-pull stages. Let’s break it … Read more
Hey there! If you’ve ever wanted to convert 12V DC from a battery into 220V AC for powering household devices, an inverter circuit is your answer. Today, I’m excited to walk you through building one using the SG3525 IC. It’s a fun project that’s perfect if you’re into electronics and want to try something practical. … Read more
Are you fascinated by the world of radio and eager to build your device? An AM radio receiver is a classic electronics project that lets you tune into amplitude modulation broadcasts using simple components. In this guide, we’ll walk you through constructing a basic AM radio receiver using an OC13 transistor, perfect for hobbyists and … Read more
If you’re an electronics hobbyist or a professional looking to create a compact power supply, building a 20V Switch Mode Power Supply (SMPS) is a rewarding project. SMPS designs are efficient and widely used in modern devices due to their small size and energy-saving features. In this guide, we’ll walk you through constructing a simple … Read more
If you’re an electronics enthusiast or a professional looking to enhance circuit safety, an electronic fuse is a must-have project. Unlike traditional fuses that burn out and need replacement, an electronic fuse uses a semiconductor device to protect circuits from overcurrent, offering a resettable solution. In this guide, we’ll walk you through building an electronic … Read more
Protecting your batteries from over-discharge is crucial to extend their lifespan and ensure safety in your electronic projects. A battery discharge protection circuit can prevent damage by cutting off the load when the battery voltage drops too low. In this guide, we’ll explore a simple yet effective circuit using the TL431 voltage regulator and an … Read more
If you’re an automotive enthusiast or an electronics hobbyist looking to dive into high-voltage projects, building a car ignition coil driver circuit is a fantastic way to expand your skills. This circuit uses a 555 timer IC and an IRF540 MOSFET to drive an ignition coil, generating the high voltage needed for a spark gap. … Read more