User's Manual

GE866-DUAL Hardware User Guide
1VV0301051 Rev. 2 – 2014-04-07 7
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Mod. 0805 2011-07 Rev.2
11.7. Magnetic Buzzer Concepts
11.7.1. Short Description
A magnetic Buzzer is a sound-generating device with a coil
located in the magnetic circuit consisting of a permanent
magnet, an iron core, a high permeable metal disk and a
vibrating diaphragm.
Drawing of the Magnetic Buzzer.
The disk and diaphragm are attracted to the core by the
magnetic field. When an oscillating signal is moved through
the coil, it produces a fluctuating magnetic field which
vibrates the diaphragm at the frequency of the drive signal.
Thus the sound is produced relative to the frequency applied.
Diaphragm movement.