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Why Buzzers are so important

by Tyron Denson

Introduction

Buzzers are used for various purposes and are available in different types. Generally, a buzzer is a signaling device that makes use of sound waves. A buzzer could be mechanical, electromechanical, or piezoelectrical (piezo for short).  Some simple applications of buzzers are as seen in alarms, timers, and lots more. As mentioned earlier, there are numerous types of buzzers as applied to a variety of fields.

Types of Buzzers

There are several types of buzzers available such as the Electro-Acoustic buzzer, electromagnetic buzzer, and electromechanical buzzer, Magnetic and Piezo, among others. Buzzers concert electrical energy and signals to sound vibrations just like the micro SMD buzzer.

The key factors to put into consideration when deciding on a buzzer to use for a project are the size of your project. Relatively smaller projects or devices may require smaller sized buzzers and same goes for larger sized projects and buzzers such. Other factors include terminal type, current, sound output, and many others.

If you intend to involve in a project and will require the use of buzzers, this article is for you. A speaker should never be confused for a buzzer. They may look like they serve similar purposes, but they are very distinct.

While speakers produce sound when an alternating current or direct current is applied, buzzers make use of direct current voltage, audio indicators, and internal drive circuit as you will find in the micro SMD buzzer.

Although buzzers and speakers are both transducers that convert electrical energy into sound, both of them should not be confused to be the same thing. So how do you decide whether a speaker or buzzer is best for your project that requires a sound alert for user input?

Here are some advantages to using a buzzer:

The volume of a buzzer can be made quite small, that is, the length and width can be as minute as 4mm. Also, current consumption by a buzzer is really small with as little as 2mA consumed when functioning at 3V. In addition, a buzzer has a wide range of voltage use ranging from 2-20V.

Unlike a buzzer that is a self-oscillating device and can only produce one type of sound, a speaker consists of a moving coil connected to a diaphragm, and a magnet is inserted into the coil. The micro SMD buzzer is mostly used in toys.

Comfortably suited for portable devices, the micro Smd buzzer features low profile starting at 1.9mm the micro SMD buzzer is ideal for a range of portable hand devices. A sensor buzzer like a magnetic speaker requires different frequency so it can make sound according to the frequency provided.

Just like every other product, it is necessary to run a test on a buzzer be it micro SMD buzzers or any other type. This enables one to know if its features are suitable enough or not. Carry out a buzzer test is done simply by controlling the buzzer and checking its features mainly by listening to the sounds.

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