Posted on 06-08-2010 by microbuzzer
Buzzer sound principle is current through electromagnetic coil, electromagnetic coil creates a magnetic field to drive the diaphragm sound, and therefore need a certain current to drive it, MCU IO pin output current is small, microcontroller output TTL level Basically, a buzzer driver can not, therefore need to increase a current amplification circuit. S51 Enhanced [...]
Tags: Buzzer, Buzzer driving
Posted in TECHNOLOGY
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