韓國龍聲電機株式會社(yongsung electric co;ltd)型號齊全，價格優惠：
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led的工作電壓低，采用直流驅動方式，-功耗單管0.03~0.06w，電光功率轉換接近100%，在相同照明效果下比傳統光源節能80%以上。
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蜂鳴器主要分為壓電式蜂鳴器和電磁式蜂鳴器兩種類型。
2三繞組變壓器：一般用于電力系統區域變電站中，連接三個電壓等級。
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試驗變壓器：能產生高壓，對電氣設備進行高壓試驗。
變壓器由鐵芯或磁芯和線圈組成，線圈有兩個或兩個以上的繞組，其中接電源的繞組叫初級線圈，其余的繞組叫次級線圈。
互感器分為電壓互感器和電流互感器兩大類。
登錄后臺
