Build a Robust 12V 20A Regulated Power Supply with LM7812 and MJ2955 Transistors

12V 20A Regulated Power Supply

Hey buddy, if you’re knee-deep in electronics projects like me, you know how crucial a solid power supply is. Whether you’re powering a hefty motor driver, charging batteries, or running a home lab setup, a reliable 12V 20A regulated supply can make or break your work. It delivers clean, stable 12V at up to 20 … Read more

Build a Reliable 12V to 30-0-30V Converter with the SG3524 IC

Build a Reliable 12V to 30-0-30V Converter with the SG3524 IC

Hey there! If you’re into electronics like I am, you’ve likely faced the need for a stable dual power supply for your projects. Imagine powering an audio amplifier or testing op-amps that require symmetric voltages with respect to ground. That’s where a 12V to 30-0-30V converter shines. It transforms a simple 12V input—such as a … Read more

DIY LM317 Adjustable Constant Current Source: Build Your Own 125-400mA Supply

DIY LM317 Adjustable Constant Current Source

Hey, if you’re diving into electronics and need a reliable way to control current for projects like LED lighting, battery charging, or component testing, an adjustable constant current source is a game-changer. The schematic you shared features the LM317 regulator set up to deliver 125-400mA, adjustable with a potentiometer. As an experienced electronics engineer, I’ve … Read more

How to Build an Ultra Low Drop Linear Regulator Circuit Using LM555 and TL431

Ultra Low Drop Linear Regulator Circuit

Hey, if you’re dealing with battery-powered gadgets or any setup where every millivolt counts, this circuit could be a game-changer. The image shows an ultra-low dropout linear regulator that can keep your output stable even when the input voltage is barely higher than what you need out. It’s built around the LM555 timer IC for … Read more

How to build a 1 V to 30 V, 3 A regulator using LM317 and a power transistor

1 V to 30 V, 3 A regulator

Hey, if you’re tinkering with electronics projects and need a solid power supply that can handle a wide range of voltages at decent current, this circuit might be just what you’re looking for. The diagram shows a straightforward voltage regulator setup that promises 1V to 30V output at up to 3 amps. It’s built around … Read more

Easy MOSFET Voltage Regulator Circuit – Complete Guide

Voltage Regulator Circuit

Voltage regulation is one of the most critical aspects of electronics design. Whether you’re building a small DIY electronics project, a power amplifier, LED driver, or any other circuit, maintaining a stable voltage output is essential for protecting components and ensuring reliable operation. In this article, we’ll walk through a simple yet highly effective MOSFET-based voltage regulator circuit, as … Read more

12V Transformerless Power Supply Circuit Explained

12V Transformerless Power Supply Circuit

If you’ve ever needed a compact way to power a small electronic circuit directly from mains, without using a bulky transformer, you’ve probably come across something called a transformerless power supply. These supplies are simple, cheap, and very compact. Instead of stepping down mains voltage with a transformer, they use a series capacitor to limit current, followed by … Read more

1.5V to 12V Regulated Power Supply Using LM317

1.5V to 12V Regulated Power Supply Using LM317

A stable power supply is one of the most important tools to have in an electronics lab. Whether you’re testing microcontrollers, experimenting with sensors, or running small DC motors, you need a reliable voltage source. While you can buy lab power supplies, building one yourself is more rewarding and, honestly, teaches you a lot about … Read more

Building a Variable Power Supply with 2N3055 Transistor

Building a Variable Power Supply with 2N3055 Transistor

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

Dual Power Supply Circuit using TIP141, TIP42C, and LM340T5

Dual Power Supply Circuit

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