Hall Effect Sensor

Your Source for Hall Effect Sensors in Bangladesh

Welcome to the ultimate collection of Hall Effect Sensors, brought to you by Bigyan Project. If you're a student in Bangladesh working on your next science fair project, or a hobbyist diving into the fascinating world of DIY electronics, you've found the perfect component. Hall effect sensors are the unseen magic behind countless modern devices, and they are an essential tool for bringing your innovative ideas to life.

What is a Hall Effect Sensor?

A Hall effect sensor is a small, affordable, and highly reliable transducer that changes its output voltage when it comes near a magnetic field. It's based on a principle discovered by Edwin Hall in 1879 called the "Hall effect." When a current-carrying conductor is placed in a magnetic field, a voltage is generated perpendicular to both the current and the field. These sensors cleverly use this effect to "see" magnets, making them incredibly useful for a wide range of applications without any physical contact.

How Does it Work?

Inside the sensor is a thin slice of semiconductor material. When current flows through it and a magnet is brought near, the magnetic field deflects the charge carriers (electrons) to one side of the slice. This creates a measurable voltage difference across the slice's sides. The sensor's internal electronics then amplify this tiny voltage into a usable signal, which can be either analog (varying with the magnetic field's strength) or digital (switching on or off at a certain threshold).

Top Applications for Your Science & DIY Projects

At বিজ্ঞান প্রজেক্ট, we see students and hobbyists use these sensors in amazing ways. Here are some popular project ideas:

• DIY Speedometer (RPM Counter): Attach a small magnet to a rotating wheel or fan. The Hall effect sensor will produce a pulse every time the magnet passes by, allowing your microcontroller (like an Arduino) to easily calculate the speed (RPM).
• Non-Contact Proximity Switches: Create a smart security system for your room or a simple detector for a project box. The sensor can detect if a door, window, or lid (with a magnet attached) is open or closed without any moving parts that can wear out.
• Brushless DC (BLDC) Motor Control: Hall sensors are fundamental to the operation of BLDC motors, which are used in everything from computer fans to drones. They detect the rotor's position to energize the motor coils in the correct sequence.
• Current Sensing: Specialized Hall effect sensor modules, like the popular ACS712, can measure both AC and DC current flowing through a wire. This is perfect for monitoring power consumption in your electronics projects.
• Magnetic Field Detection: Build a simple magnetometer to map out magnetic fields or create a device that responds to hidden magnets.

Types of Hall Effect Sensors at Bigyan Project

To ensure your project is a success, we offer the right type of sensor for your specific needs:

1. Digital Hall Effect Sensors: These act like a switch. They turn ON when a magnetic field of sufficient strength is detected and turn OFF when it's removed. Popular models like the A3144 and US1881 are perfect for counting, positioning, and proximity detection.
2. Linear (Analog) Hall Effect Sensors: These sensors provide an output voltage that is directly proportional to the strength of the magnetic field. They are excellent for measuring the strength and polarity of a magnet, making them ideal for more nuanced applications.
3. Hall Effect Sensor Modules: For convenience, we stock modules like the ACS712 Current Sensor which come on a small PCB with all the necessary supporting components, making them easy to integrate directly into your project.

Why Choose Bigyan Project for Your Project Needs?

We are more than just a component shop; we are a partner in your journey of discovery. When you buy from Bigyan Project, you get quality-tested components at student-friendly prices, right here in Bangladesh. We understand the challenges of building a "বিজ্ঞান প্রজেক্ট" and are here to provide the reliable parts you need to succeed.

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