Starting Electronics

Transistors are among the most essential components in modern electronics. Whether you’re working on a simple hobby circuit or designing complex systems, understanding transistors is key. This guide covers what transistors are, how they work, and introduces common types like the 2N3904, 2N2222, and BC547, as well as powerful devices like the 2N3055. You’ll also … Read more

A light dependent resistor (LDR), also called a photoresistor or light detecting resistor, is a component that changes its resistance based on the amount of light falling on it. These components are widely used in electronic circuits where automatic light detection is needed. In this guide, we walk you through what an LDR is, how … Read more

Integrated circuits are the foundation of nearly every modern electronic device. Whether you’re learning how a timer circuit functions or exploring digital logic, understanding integrated circuits (ICs) is essential. This guide explains what an IC is, how it works, and introduces common types such as the 555 timer, LM3914, and field programmable gate arrays. What … Read more

A diode test is a simple but essential process in electronics troubleshooting. Whether you’re working with standard diodes, zener diodes, or LEDs, knowing how to test a diode ensures circuits function as intended. In this guide, you’ll learn how to check a diode using a multimeter, what the results mean, and how to handle different … Read more

A current shunt, also known as a shunt resistor or electrical shunt, is a low-resistance component used to measure electric current. It works by creating a small voltage drop that’s directly proportional to the current flowing through it, which can then be measured with a voltmeter or microcontroller. Current shunts are commonly used in DC … Read more

How do potentiometers work? Ever turned a volume knob on a radio or dimmed a light using a dial? Then you’ve already used a potentiometer—even if you didn’t know it! Potentiometers (or “pots” for short) are simple yet powerful components used to control voltage in electronic circuits. In this beginner-friendly guide, we break down exactly … Read more

If you’re just getting started with electronics, chances are you’ve come across resistors. They might look small and simple, but these humble components are essential in almost every electronic circuit. So what exactly do they do, and how does a resistor work? In this beginner-friendly guide, we’ll answer that question and explore everything you need … Read more

In this transistor test guide, we show you how to perform a transistor test using a multimeter. We cover both BJT (NPN and PNP) and MOSFET transistors, and also introduce other common types like JFETs and Darlington transistors. We explain when to use a transistor tester, and how to recognize a faulty transistor. Checking a … Read more