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Connector: Definition, Function, and Types

Connector: Definition, Function, and Types


Welcome to NewKelasTeknisi, your trusted source for expert insights in the electrical and electronics fields. In this article, we’ll be exploring the term connector, its functions, and the various types commonly used in our daily lives. Whether you're a tech enthusiast or a professional in the industry, understanding connectors is crucial for anyone working with electronics and electrical systems.


What is a Connector?

The word connector comes from the English term connect, which means to join or link. A connector is essentially a device that facilitates the connection between two electronic devices, allowing them to interact and communicate. They serve as the bridge that transfers signals or power from one device to another.


In a broader sense, connectors are used in a wide range of applications, from everyday gadgets like smartphones and laptops to complex network systems involving fiber optic cables.


Functions of a Connector

The primary function of a connector is, as the name suggests, to connect one electronic device to another. This enables the flow of signals or electrical power between the devices. For example, connectors are essential when linking a computer to a projector or a smartphone to a television. They not only establish the connection but also ensure smooth communication, whether it involves audio, video, or data signals.


Without connectors, modern technology as we know it would be far less integrated and user-friendly.


Read: Inductor: Definition, Function, Types, and Applications


Common Types of Connectors

There are various types of connectors, each serving different functions and applications. As technology evolves, so do connectors, offering specialized types for specific tasks. Below, we’ll explore the most common connectors used in different industries and applications:


1. Universal Serial Bus (USB)

The USB is probably the most well-known type of connector. It allows for easy connection between devices like cameras, computers, smartphones, and other gadgets. USB connectors not only facilitate data transfer but can also be used for charging devices.


2. Coaxial Connector

The coaxial connector is used to connect coaxial cables, commonly used for high-frequency signal transmission. These connectors are typically found in television antenna systems and are designed to minimize noise interference, ensuring clear signal transmission.


3. Bayonet Neill-Concelman (BNC) Connector

BNC connectors are widely used in radio, television, and other communication devices. Developed in 1951, BNC connectors are designed to connect devices like signal generators, oscilloscopes, and audio analyzers.


4. Banana Connector

Named for its banana-like shape, this type of connector is widely used in electrical testing equipment like multimeters. Banana connectors are capable of carrying high electrical currents, up to 10A, making them ideal for various measuring devices.


5. RCA Connector

The RCA connector (Radio Corporation of America) is a standard in both audio and video signal transmission. It's easily recognizable by its distinct color coding:


  • Yellow: for video signals
  • Red and White: for stereo audio signals


6. D-Subminiature Connector (D-Sub)

D-Sub connectors are commonly found in computers, specifically for VGA and serial communications. They are named for their D-shaped metal shield and can have between 9 and 100 pins, depending on the model.


7. Phone Jack

Often seen in audio devices, phone jacks are used for transmitting radio signals. They are commonly used in headphones, microphones, and other audio devices. The three common sizes are 2.5mm, 3.5mm, and 6.3mm in diameter.


8. DC Power Connector

This cylindrical connector transmits direct current (DC) electricity and is widely used in power adapters for laptops, phones, and other portable electronic devices.


9. Modular Connector (RJ)

Commonly known as RJ connectors, these are used in telecommunications and computer networks. For instance, the RJ45 connector is standard for Ethernet cables, while RJ11 is used for telephone lines.


10. Printed Circuit Board (PCB) Connector

PCB connectors are found inside electronic devices, connecting different circuit boards together. Although hidden from view, they are vital for the internal operation of devices such as computers, smartphones, and televisions.


11. FDDI Connector

Used in Fiber Distributed Data Interface (FDDI) networks, this type of connector provides high-speed data transmission, typically over fiber optic cables. It's commonly found in backbone networks that require large bandwidths.


Understanding the definition, function, and types of connectors is essential for anyone dealing with electronics and electrical devices. From USBs to coaxial cables, each connector plays a critical role in connecting devices and ensuring smooth signal transmission.


At NewKelasTeknisi, we are committed to providing in-depth, expert knowledge on the electrical components that power the world around us. Stay tuned for more insights into other key technologies that keep our modern devices running efficiently.