- An equipment in electronic switching system to deliver signals from a central control to other circuits. It converts the central control output to highpower,longduration pulses to operate relays.; 在電子交換系統(tǒng)中,從中央控制器向其它電路傳送信號(hào)的設(shè)備,它將中央控制器的輸出轉(zhuǎn)換成 大功率、長間距的脈沖,以便驅(qū)使繼電器動(dòng)作。
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