User manual

www.sainsmart.com

of 8 mm. As facing up to two buzzers’ pin County it can be seen that there are a green circuit

board is passive buzzer, no circuit board using vinyl enclosed one is active buzzer. Further

determine the active and passive buzzer multimeter resistance profile Rxl file test: use a black

pen touch buzzer’s pin "+", red pen touch in the other pin back and forth, If you feel a click,

cracking sound and resistance is only 8Ω

(Or 16Ω) which is a passive buzzer; continuing sound can issue, and the resistance is more than

hundreds of Europe that is active buzzer. Active buzzer directly connected to the rated power

(indicate on the new buzzer’s label) can be continuous sound; rather passive buzzer and

electromagnetic speaker needs to be connected to the audio output circuit can vocalization.

Buzzer also can be divided into according to the constructed different,: the electromagnetic

buzzer and piezoelectric buzzer;

Connect your circuit as the below diagram.

The buzzer used in this experiment with the internal drive. Circuit the buzzer positive connect

directly into the digital port 13. GND socket connected to the negative terminal of the buzzer.

Buzzer analog ambulance siren sound experiment