ماژول زنگ اخبار منفعل ، ماژول بازر پسیو Passive Buzzer
There are a lot of people the concept of active and passive buzzer buzzer not very clear, here to do a brief introduction, we want to be helpful for future use.
Note that the "source" does not mean power. But to shock source.
ماژول زنگ اخبار منفعل ، ماژول بازر پسیو Passive Buzzer
There are a lot of people the concept of active and passive buzzer buzzer not very clear, here to do a brief introduction, we want to be helpful for future use.
Note that the "source" does not mean power. But to shock source.
Passive buzzer features are:
1 passive internal source without shock, so if you can not make it with the DC signal tweet. Must 2K ~ 5K square wave to drive it
2 controllable sound frequencies can be made "more than a meter made Suola Xi" effect.
3 In some special cases, you can reuse LED and a control port
Active buzzer features are:
1 active buzzer with internal shock source, so long as a power will be called
to facilitate the control program 2, a single-chip high-low sound can be allowed, and passive buzzer can not.
Each weighs about 6g
Description of the module
module using 9012 transistor drive
Operating Voltage 3.3V-5V
has a fixed bolt hole for easy installation
small PCB board size: 3.3cm * 1.3cm
Module interface specification (3-wire)
1 VCC 3.3V-5V external voltage (can be directly connected with 5v and 3.3v microcontroller MCU)
2 GND External GND
3 I / O external microcontroller IO port
