Buzzer BD23A
常州富鸿达电子有限公司成立于2010年，生产蜂鸣器，喇叭，报警器，咪头等电声器件，是一家集研发、生产、销售一体的企业。
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buzzers are divided into two categories: piezoelectric buzzers are piezoelectric and electromagnetic: piezoelectric buzzers use the piezoelectric effect of piezoelectric ceramics to drive the vibration of metal sheets to produce sound; The electromagnetic buzzer uses the principle of electromagnetism to suck down the metal diaphragm when energized and bounces back according to the elastic force of the diaphragm when not energized. Therefore, the piezoelectric buzzer is driven by square wave, electromagnetic type is 1/2 drive,
Keywords: Buzzer BD23A
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