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What is PCB and how does it work?

 A Printed Circuit Board (PCB) is a fundamental component in electronic devices, providing the physical structure to mount and connect electronic components. The process of working with a PCB involves designing, fabricating, assembling, and testing. Below is a simplified guide on how to work with a PCB: 1. Designing a PCB PCB design is the first and crucial step. It involves creating a blueprint of the electrical circuit that will be etched onto the board. Choose PCB Design Software : Common tools include KiCad , Eagle , Altium Designer , or EasyEDA . Schematic Diagram : Create a schematic that shows how components are connected (e.g., resistors, capacitors, ICs). Component Placement : In the PCB design software, place components on the board. The design should consider the physical size and pin connections of the components. Routing : This is the process of connecting the components via traces (the electrical pathways). Ensure proper routing to minimize interference and avoid s...

How does a fan work step by step?| What is the operating principle of a celling fan? | TECHNOLOGY FACTS

How does a fan work mechanically.  How celling fan work Ceiling fans work by utilizing the principles of aerodynamics and mechanical engineering to circulate air in a room, creating a cooling effect through increased air movement. Here's how a typical ceiling fan operates: Motor: The fan's motor is housed within the fan's motor housing, usually mounted to the ceiling. This motor is responsible for turning the blades. Blades: Ceiling fans typically have 3 to 5 blades attached to a central hub. These blades are angled to efficiently move air. The angle of the blades is designed to push air downwards when rotating in a counterclockwise direction (as viewed from below), creating a cooling breeze in the room. In some cases, ceiling fans have reversible motors, allowing the blades to rotate in a clockwise direction to pull air upwards, which can be beneficial in cooler months to help distribute warm air trapped near the ceiling. Rotation: The motor rotates the blades when electri...