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The structure principle of piezoelectric buzzer
- Jul 06, 2017 -

Piezoelectric buzzer mainly by the harmonic oscillator, piezoelectric buzzer tablets, impedance matching and resonant box, shell and so on. A multi-harmonic oscillator consists of a transistor or an integrated circuit, when the power supply is connected (1.5~15v DC operating voltage), the harmonic oscillator, the output of 1.5~2.5kHZ audio signal, impedance matching device to promote the sound of piezo buzzer.