The working sounding principle of the passive-induced buzzer is that the square-wave signal input resonant device is converted into a sound signal output.
The main difference between active buzzer and passive buzzer is that the requirements of the input signal are not the same, the ideal signal for active buzzer operation is direct current, generally marked as VDD, VDC, etc. Because there is a simple oscillation circuit inside the buzzer, constant direct current can be converted into a pulse signal of a certain frequency, resulting in magnetic field alternating, causing the molybdenum vibration to make a sound.
Established in 2007, Changzhou Jiezhimei Electroacoustic Material Co., Ltd. is an independent research and development high-tech enterprise that integrates design, research, development, production and sales of miniature ultra-thin high-power loudspeakers, receivers and buzzers.