Microbuzzer.com · Posted on 15-05-2009 by microbuzzer
1. Waterproof sticker 2. Spools 3. Coil 4. Magnet 5. Base 6. Pin 7. Shell 8. Core 9. Sealing glue 10. A small metal plates 11. Vibrating membrane
12. Circuit board
The working principle of passive electromagnetic buzzer:
Ac signal through the bypass line in the stent in the stent core package produce a column of alternating magnetic flux, the alternating magnetic flux and magnetic flux for a constant stack, so that films of molybdenum to a given
The exchange of signals with the frequency of vibration and sound resonator. Products of the frequency response and sound pressure curve and the value gap, molybdenum films inherent vibration frequency (which can be rough refraction
For small film thickness of molybdenum), Shell (Tune Helmholtz resonance) frequency of the magnetometer magnetic wire is directly related to the diameter.
Composed of electromagnetic buzzer by electromagnetic oscillator, the electromagnetic coil, magnet, vibration, such as the composition of membrane and shell.
Access to power, the audio signal generated by oscillator current through the electromagnetic coil to generate magnetic fields of electromagnetic coils.
Membrane vibration in the electromagnetic coil and magnet interaction, the buzzer sound vibration periodically.
Tags: Buzzer, Passive magnetic, working
Posted in TECHNOLOGY
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