韩国龙声电机株式会社(yongsung electric co;ltd)型号齐全，价格优惠：
蜂鸣器广泛应用于计算机、打印机、复印机、报警器、电子玩具、汽车电子设备、电话机、定时器等电子产品中作发声器件。
韩国sconinc变送器sconi-rtd-i63x sconi-rtd-i63y说明
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试验变压器：能产生高压，对电气设备进行高压试验。
led的工作电压低，采用直流驱动方式，-功耗单管0.03~0.06w，电光功率转换接近100%，在相同照明效果下比传统光源节能80%以上。
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变压器由铁芯或磁芯和线圈组成，线圈有两个或两个以上的绕组，其中接电源的绕组叫初级线圈，其余的绕组叫次级线圈。
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互感器分为电压互感器和电流互感器两大类。
蜂鸣器在电路中用字母“h”或“ha”旧标准用“fm”、“zzg”、“lb”、“jd”等表示。
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