導致電感器的發生嘯叫的原因多種多樣，十分復雜。下面深圳貼片電感代理商告訴你功率電感器嘯叫原因有哪些？

功(gong)率(lv)(lv)(lv)電(dian)(dian)(dian)(dian)(dian)感器(qi)嘯(xiao)叫(jiao)(jiao)原因(yin)有：1、間(jian)歇(xie)工作(zuo)(zuo)、頻(pin)(pin)(pin)(pin)率(lv)(lv)(lv)可(ke)(ke)(ke)(ke)變模(mo)式(shi)(shi)、負(fu)荷變動(dong)(dong)等可(ke)(ke)(ke)(ke)能導(dao)(dao)致(zhi)(zhi)人(ren)耳可(ke)(ke)(ke)(ke)聽頻(pin)(pin)(pin)(pin)率(lv)(lv)(lv)振動(dong)(dong)。說白就是(shi)電(dian)(dian)(dian)(dian)(dian)感器(qi)主體會(hui)(hui)發生振動(dong)(dong)，所以產生噪聲。2、PWM調(diao)光等DC-DC轉(zhuan)換器(qi)間(jian)歇(xie)工作(zuo)(zuo)導(dao)(dao)致(zhi)(zhi)的(de)(de)(de)嘯(xiao)叫(jiao)(jiao)。當基板上貼裝的(de)(de)(de)功(gong)率(lv)(lv)(lv)電(dian)(dian)(dian)(dian)(dian)感器(qi)中流(liu)過間(jian)歇(xie)工作(zuo)(zuo)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)時，電(dian)(dian)(dian)(dian)(dian)感器(qi)主體將(jiang)會(hui)(hui)因(yin)頻(pin)(pin)(pin)(pin)率(lv)(lv)(lv)影響(xiang)而發生振動(dong)(dong)，從而導(dao)(dao)致(zhi)(zhi)出現(xian)嘯(xiao)叫(jiao)(jiao)。3、頻(pin)(pin)(pin)(pin)率(lv)(lv)(lv)可(ke)(ke)(ke)(ke)變模(mo)式(shi)(shi)DC-DC轉(zhuan)換器(qi)導(dao)(dao)致(zhi)(zhi)的(de)(de)(de)嘯(xiao)叫(jiao)(jiao)。由于(yu)(yu)開關損耗(hao)(hao)與(yu)頻(pin)(pin)(pin)(pin)率(lv)(lv)(lv)成正比(bi)，因(yin)此通(tong)過降低(di)頻(pin)(pin)(pin)(pin)率(lv)(lv)(lv)可(ke)(ke)(ke)(ke)在(zai)輕負(fu)荷情(qing)況下實現(xian)高效(xiao)化。但降低(di)后的(de)(de)(de)頻(pin)(pin)(pin)(pin)率(lv)(lv)(lv)將(jiang)會(hui)(hui)進入人(ren)耳可(ke)(ke)(ke)(ke)聽的(de)(de)(de)約20~20kHz的(de)(de)(de)范圍(wei)，此時功(gong)率(lv)(lv)(lv)電(dian)(dian)(dian)(dian)(dian)感器(qi)將(jiang)會(hui)(hui)發生嘯(xiao)叫(jiao)(jiao)。4、負(fu)荷導(dao)(dao)致(zhi)(zhi)的(de)(de)(de)嘯(xiao)叫(jiao)(jiao)。例(li)如，出于(yu)(yu)兼顧低(di)耗(hao)(hao)電(dian)(dian)(dian)(dian)(dian)量以及處理能力(li)的(de)(de)(de)目的(de)(de)(de)，筆記本電(dian)(dian)(dian)(dian)(dian)腦CPU中帶有周期(qi)(qi)性變更消耗(hao)(hao)電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)模(mo)式(shi)(shi)，當該(gai)周期(qi)(qi)處于(yu)(yu)人(ren)耳可(ke)(ke)(ke)(ke)聽頻(pin)(pin)(pin)(pin)率(lv)(lv)(lv)范圍(wei)時，功(gong)率(lv)(lv)(lv)電(dian)(dian)(dian)(dian)(dian)感器(qi)可(ke)(ke)(ke)(ke)能會(hui)(hui)因(yin)該(gai)影響(xiang)而產生嘯(xiao)叫(jiao)(jiao)。