Piezoelectric Buzzer Diagram. The frequency of the sound produced by both magnetic and piezo buzzers can be controlled over a wide range by the frequency of the signal driving the buzzer. Above is a cheap three terminal piezoelectric transducer used in 12v piezo buzzer that produces sound with the below circuit arrangement.
Equivalents for passive buzzer. A piezo buzzer is modeled as a capacitor while a magnetic buzzer is modeled as a coil in series with a resistor. A piezo buzzer exhibits a reasonably linear relationship between the input.
The simple piezo buzzer circuit described here actually works in a quite unique way.
This buzzer circuit is so simple that you could make it just by soldering the components to each other. How to use a buzzer. The piezo buzzer produces sound based on reverse of the piezoelectric effect. The circuit is fairly simple you can use a little piece of strip board to make it.
