VM160CJ
VM160CJVM160CJ開關(guān)型穩(wěn)壓電源采用功率半導(dǎo)體器件作為開關(guān),通過控制開關(guān)的占空比調(diào)整輸出電壓。以功率晶體管(GTR)為例,當(dāng)開關(guān)管飽和導(dǎo)通時(shí),集電極和發(fā)射極兩端的壓降接近零;當(dāng)開關(guān)管截止時(shí),其集電極電流為零。所以其功耗小,效率可高達(dá)70%-95%。而功耗小,散熱器也隨之減小。開關(guān)型穩(wěn)壓電源直接對(duì)電網(wǎng)電壓進(jìn)行整流、濾波、調(diào)整,然后由開關(guān)調(diào)整管進(jìn)行穩(wěn)壓,不需要電源變壓器。此外,開關(guān)工作頻率為幾十千赫,濾波電容器、電感器數(shù)值較小。因此開關(guān)電源具有重量輕、體積小等優(yōu)點(diǎn)。
廈門泰尼備件解決方案銷售中心:
轉(zhuǎn)子流量計(jì)在工業(yè)生產(chǎn)過程中應(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。RELIANCE ELECTRIC 30FR7731 USPP 30FR7731
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