All electronic components names, functions, testing, pictures and symbols - smd components

Summary

This video is a comprehensive guide for electronic technicians and engineers, focusing on understanding and testing various electronic components using a multimeter. The content is split into two parts: theory and practical. It covers components like capacitors, inductors, relays, rectifiers, diodes, transistors, and more. The video explains the functions of each component, their characteristics, and how to test them in real-life scenarios, especially in computer motherboards and electronic circuits. Viewers are also encouraged to engage with the video by subscribing, liking, and sharing to motivate the creator to produce more helpful content.

Takeaways

• 😀 The video is aimed at electronic technicians and engineers, teaching the names, functions, and testing methods of electronic components.
• 😀 The video is divided into two parts: a theoretical part and a practical part focused on hands-on testing with a multimeter.
• 😀 Polarized capacitors, like electrolytic capacitors, have two terminals (positive and negative) and are used for filtering current and ensuring continuous voltage.
• 😀 Inductors, which can have one or more windings, increase current in circuits and can be tested for continuity using a multimeter.
• 😀 A relay contains an inductor and a switch. When the inductor receives power, the switch closes, allowing current to flow between terminals.
• 😀 Bridge rectifiers are used to convert AC voltage to DC voltage in power supplies, and they can be tested with a multimeter in future lessons.
• 😀 Batteries, like those used in laptops, provide power to circuits and have distinct positive and negative terminals.
• 😀 Components like MOSFETs, diodes, and transistors are essential for regulating voltage and current in circuits, with specific testing methods covered in future lessons.
• 😀 Fuses protect circuits from high current, and each fuse has two key characteristics: voltage and amperage ratings.
• 😀 Connectors, including USB and power jacks, play a vital role in linking components and need to be tested for proper functionality to ensure the correct power flow.
• 😀 Heatsinks are crucial for dissipating heat from key components like the CPU, MOSFETs, and graphic cards, ensuring they do not overheat and fail.

Q & A

What is the purpose of a polarized capacitor?

A polarized capacitor is used to filter the current and convert alternating current (AC) into continuous current (DC). The capacitor has two terminals, a negative and a positive terminal, and is characterized by voltage and farad ratings.

How can you test an inductor using a multimeter?

To test an inductor with a multimeter, set the multimeter to the continuity setting. A functional inductor should show a low resistance or a beeping sound indicating continuity. If there is no continuity, the inductor might be faulty.

What is the function of a relay in an electronic circuit?

A relay is an electromagnetic switch that allows current to flow between two terminals when powered. It typically has an inductor and a switch; when the inductor is energized, it closes the switch, allowing current to flow through.

What does a bridge rectifier do?

A bridge rectifier is used to convert alternating current (AC) into direct current (DC). It does this by utilizing four diodes arranged in a bridge configuration to ensure the current flows in one direction.

What are the key characteristics of a battery in an electronic circuit?

Batteries in electronic circuits have two terminals (positive and negative) and are used to generate voltage and current. They come in various types, each with specific voltage and capacity ratings.

How do you identify different types of diodes?

Diodes are typically identified by their part numbers. For instance, a Schottky diode is often used as a rectifier, and a Zener diode is used to stabilize the current. Diodes allow current to flow only in one direction, from the anode to the cathode.

What is the function of a MOSFET in electronic circuits?

A MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a component used as a voltage regulator or oscillator. It controls the flow of electrical power in circuits by switching or amplifying signals.

Why are capacitors used in electronic circuits?

Capacitors are used in circuits to filter noise, smooth voltage, and store electrical energy temporarily. They are essential for stabilizing voltages, particularly in power supplies and signal processing circuits.

What is the role of a heatsink in electronic components?

A heatsink is used to dissipate heat from electronic components such as MOSFETs and voltage regulators. By preventing overheating, it helps maintain the stability and longevity of these components.

What are the main functions of transistors in electronic circuits?

Transistors are used to amplify or switch electronic signals. They have three terminals—base, collector, and emitter—and play a crucial role in controlling current flow in circuits, such as amplifying weak signals or acting as a switch.