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If you’ve ever wanted to catch radio signals with nothing more than a handful of parts, then building a simple AM radio receiver is a great place to start. This project doesn’t even need a power supply – it works entirely by harvesting energy from the radio signal itself. That’s why it’s sometimes called a crystal radio. In … Read more
Energy harvesting has always fascinated engineers. Imagine capturing the small amounts of energy we waste every day and using it to power tiny gadgets. One of the most interesting ways to do this is by converting footsteps into electricity using a piezoelectric element. In this article, we’ll take a close look at a footstep power generation circuit built … Read more
If you’ve ever needed to check whether an AC mains wire is live without touching it directly, an AC line detector circuit is one of the easiest tools you can build. It’s a handy gadget for electricians, hobbyists, or anyone working with electronics. In this article, we’ll go through a simple but effective circuit that uses BC548 transistors to … Read more
If you’ve been tinkering with electronics for a while, you know that a good power supply is essential. Most circuits need a stable and adjustable voltage source to test, troubleshoot, and operate properly. Instead of buying a bench power supply, you can build one yourself using a handful of components. One of the most popular … Read more
Power supplies are at the heart of every electronics project. Whether you are working with microcontrollers, op-amps, or audio amplifiers, stable and reliable voltage is essential. The circuit shown here provides two regulated outputs: 12V DC and 5V DC. It uses a mix of linear regulators, filtering capacitors, and transistors to handle higher current demands. In this guide, … Read more
If you’re looking for a high-fidelity audio amplifier project, a 50-watt MOSFET amplifier is one of the best DIY circuits you can build. It’s reliable, efficient, and capable of delivering clear sound output suitable for both hobbyists and serious audio enthusiasts. In this article, we will dive deep into how the 50W MOSFET amplifier circuit works, its components, construction, and applications. Introduction … Read more
Are you searching for a simple and effective way to make your 220V AC bulb flash automatically? Whether it’s for decoration, signaling, or just an exciting electronics project, a 220V Bulb Flasher Circuit can be the perfect solution. In this article, we’ll walk through the working principle, circuit components, and applications of a reliable 555 timer-based bulb flasher. How … Read more
The 12V to 310V converter is a powerful DC-DC boost circuit that steps up a low 12V DC input to a high 310V DC output. This type of converter is often used in inverter systems, tube amplifiers, and high-voltage applications where a stable DC supply is essential. How the Circuit Works This design is based … Read more
The Cell Phone SMPS (Switched Mode Power Supply) is a compact, efficient, and reliable power conversion circuit designed to provide a stable 5V to 5.5V DC output for charging mobile devices. This circuit uses minimal components yet delivers high efficiency and low heat generation. Understanding the Circuit Design This SMPS circuit works on the principle … Read more
The Mini Tesla Coil is a fascinating high-voltage project for electronics enthusiasts. Using simple components, this circuit can generate an impressive high-frequency Mini Tesla coil. This guide is suitable for Beginners. Below, we break down its working, components, and setup for optimal performance. Understanding the Circuit This circuit works by using a 2N6292 transistor to … Read more