韓國龍聲電機株式會社(yongsung electric co;ltd)型號齊全，價格優惠：
蜂鳴器是一種一體化結構的電子訊響器，采用直流電壓供電，
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3自耦變電器：用于連接不同電壓的電力系統。也可做為普通的升壓或降后變壓器用。
蜂鳴器廣泛應用于計算機、打印機、復印機、報警器、電子玩具、汽車電子設備、電話機、定時器等電子產品中作發聲器件。
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固態繼電器由三部分組成：輸入電路，隔離耦合和輸出電路。
簡稱可控硅調功器。又稱晶閘管調功器，晶閘管調整器，晶閘調壓器，可控硅調壓器，可控硅調整器具有-、無機械噪聲和磨損、響應速度快、體積小、重量輕等諸多優點。
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