Piezo Buzzer DEfinition

Alan Butcher Components has been supplying buzzers and sounders for over 30 years. The terminology for these devices can sometimes be confusing so below is a summary of how we define our audio products. Buzzers and Sounders are also known as audio alarms, audio indicators, audio transducers, piezo buzzers, beepers and/or audible alarms. They can be split into piezo and electromechanical devices. Piezo – piezo sounders contain a piezoelectric vibration plate (also known as a piezo element) within a moulded case. A sound is emitted when a voltage is applied and the piezo element inside the case vibrates. Electromechanical – electromechanical buzzers use an electromagnet and bare metal disc. When a voltage is applied a magnetic field is generated, causing the magnet to move and the diaphragm to vibrate, generating an audible sound.

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