Views: 64 Author: Site Editor Publish Time: 2019-08-12 Origin: Site
If it is an active buzzer, that is, a buzzer with a drive circuit inside, the voltage used is the DC power supply. For example, the common type MSPS23A35P12 is directly driven by a 12VDC voltage.
If it is a passive buzzer, that is, an externally driven buzzer, the voltage used is the ac pulse signal. For example, the common type MSPT14A is driven by a pulse signal to make it sound.
For passive buzzers, the symbols representing voltages are: Vp-p and Vo-p, Vp-p is the peak-to-peak voltage, and Vo-p is the peak voltage.
Vp-p (peak-to-peak) is the maximum voltage value minus the minimum voltage value (both values are vector values)