All Knowledge

A transistor is a semiconductor device that can amplify signals or act as a switch in electronic circuits. It’s one of the most important components in electronics, powering everything from smartphones to computers. — Key Features of a Transistor Terminals: 3 — Collector (C), Base (B), Emitter (E) Polarity: Depends on type (NPN or PNP) […]

A diode is a fundamental electronic component that allows current to flow in only one direction. Think of it as a one-way street for electrons—essential for controlling current and protecting circuits. Key Features of a Diode How a Diode Works Diodes act like a check valve, letting current pass only in one direction. Types of

A resistor is a fundamental electronic component that limits current or reduces voltage in a circuit. Think of it as a traffic controller for electrons, preventing damage to sensitive components by regulating how much current flows. Key Features of a Resistor Types of Resistors 1. Fixed Resistor 2. Variable Resistor Specialized Types of Resistors How

Electricity doesn’t always come in the form we need. Devices require different types of current: Converting between these two forms is essential in electronics, and that’s where rectifiers and inverters come in. AC to DC: Rectifier A rectifier converts alternating current (AC) into direct current (DC). Types of Rectifiers Applications: DC to AC: Inverter An

Transformers are essential devices in electrical and electronic systems. They make it possible to change voltage levels safely, enabling electricity to travel efficiently from power plants to our homes and devices. What is a Transformer? A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. It can

Your smartphone is more than a device; it’s a gateway to the mobile network, connecting you to the world via your SIM carrier. Mobile networks have evolved from 2G to 5G, improving speed, capacity, and connectivity every step of the way. What is a SIM Carrier? A SIM carrier (or mobile network operator) is a

Sensors are the eyes, ears, and balance system of electronics. They detect physical or environmental changes and convert them into signals your device can understand. Common Sensors 1. Face ID / Facial Recognition Sensor Uses infrared, 3D mapping, or cameras to detect your face. Provides secure unlocking and authentication. 2. Fingerprint Sensor Detects unique fingerprint

Every time you make a call, send a text, or scroll social media, your phone is communicating with a mobile network. But how does this invisible system work, and how does your data travel from your pocket to the world? Let’s break it down. What is a Mobile Network? A mobile network is a system

Your smartphone is basically a pocket-sized computer, and none of its apps, calls, or games would work without a battery. Phone batteries are specially designed to be lightweight, rechargeable, and powerful, giving you hours of usage in a tiny package. What is a Phone Battery? A phone battery is a rechargeable energy source that powers

In every modern electronic device—smartphones, laptops, tablets, or IoT gadgets—there’s a hidden infrastructure that keeps everything running smoothly. These are the main board (motherboard) and the sub board (daughterboard). Understanding them helps you see how devices handle processing, connectivity, power, and audio. What is a Main Board (Motherboard)? The main board, also called the motherboard,