1746-A10   1746-A10

1746-A10   1746-A10　輸入特性
　　為了保證固態(tài)繼電器的正常工作，必須考慮輸入條件，通常輸入電壓為階躍函數(shù)，然而，如果輸入電壓是斜坡，就會(huì)出現(xiàn)半周循環(huán)現(xiàn)象，出現(xiàn)這種現(xiàn)象是由于開(kāi)關(guān)半導(dǎo)體器件在正，反觸發(fā)時(shí)不完全對(duì)稱(chēng)，因此，如果輸入電壓斜坡上升，這種開(kāi)關(guān)在負(fù)載為某一極性時(shí)就可能處罰，而當(dāng)負(fù)載電壓為反極性時(shí)就可能不處罰，而出現(xiàn)半周導(dǎo)通現(xiàn)象，這種現(xiàn)象將持續(xù)到輸入量足以使輸出完全導(dǎo)通為止。

●業(yè)從事（DCS系統(tǒng)）（機(jī)器人系統(tǒng)）（大型伺服控制系統(tǒng)）模塊 備件銷(xiāo)售廈門(mén)[泰尼電氣有

　　轉(zhuǎn)子流量計(jì)在工業(yè)生產(chǎn)過(guò)程中應(yīng)用較廣，可以測(cè)量多種介質(zhì)的流量，特別適用于中小管徑和低雷諾數(shù)的中小流量測(cè)量。轉(zhuǎn)子流量計(jì)結(jié)構(gòu)簡(jiǎn)單，靈敏度高，量程比寬（10：1），壓力損失小且恒定，對(duì)直管段的要求不高，刻度近似線性，價(jià)格便宜，使用維護(hù)簡(jiǎn)便。但儀表受被測(cè)介質(zhì)密度、粘度、溫度、壓力等因素的影響，其精度一般在1．5級(jí)左右。

　　輸入端出現(xiàn)的瞬態(tài)，可以使繼電器誤動(dòng)，尤其是當(dāng)繼電器響應(yīng)時(shí)間等于或小于噪聲脈沖持續(xù)時(shí)間時(shí)，繼電器就會(huì)導(dǎo)通，對(duì)輸入信號(hào)進(jìn)行濾波有助于減少這種現(xiàn)象。
　　當(dāng)反極性（反向輸入）電壓適用時(shí)，繼電器輸入端可以承受最大輸入電壓值或其它規(guī)定值的反極性電壓，超過(guò)該值，可能造成SSR的永久性破壞，當(dāng)反極性電壓不適用時(shí)，或繼電器規(guī)定不能反向施加輸入電壓時(shí)，使用時(shí)一定注意，不能使輸入電壓反向。

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