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力士樂放大器/德國REXROTH中國上海供應(yīng)摘要：通過對力士樂比例方向閥ＶＴ３００６－Ｓ－３０型電子放大器組成及工作原理的基本知識(shí)介紹，以供擁有這種閥的液壓系統(tǒng)調(diào)試、使用和維護(hù)之操作者參考。主題詞：液壓系統(tǒng)液壓元件力士樂比例方向閥ＶＴ３００６－Ｓ－３０型電子放大器濰坊柴油機(jī)有限責(zé)任公司進(jìn)口ＨＷＳ靜壓造型生產(chǎn)線，其液壓系統(tǒng)中多處使用力士樂比例閥，致使整力士樂放大器/德國REXROTH中國上海供應(yīng)個(gè)液壓系統(tǒng)的控制具有良好的性能。比例方向閥是比例閥的一種，它是按輸入電信號(hào)來連續(xù)、按比例地對油液的方向進(jìn)行遠(yuǎn)距離控制的閥。電信號(hào)是由其所屬的ＶＴ３００６－Ｓ－３０型電子放大器產(chǎn)生的，了解該種放大器的功能和使用知識(shí)，將有利于對擁有這種閥之液壓系統(tǒng)的廠家，在系統(tǒng)的調(diào)試、保證設(shè)備正常運(yùn)行和維修時(shí)參考之用。１ＶＴ３００６┐Ｓ┐３０型放大器的功能該放大器的組成線路圖如圖１所示。主要包括帶有五個(gè)可調(diào)斜坡時(shí)間的斜坡形成器（總時(shí)間為０．０３～５ｓ）、函數(shù)形成器、模擬累加器、電流調(diào)節(jié)器、節(jié)拍發(fā)生器、功率放大器和電源五部分。圖１ＶＴ３００６－Ｓ－３０型放大器力士樂放大器不但可對光信號(hào)進(jìn)行直接放大，同時(shí)還具有實(shí)時(shí)、高增益、寬帶、在線、低噪聲、低損耗的全光放大功能，是新一代光纖通信系統(tǒng)中*的關(guān)鍵器件；由于這項(xiàng)技術(shù)不僅解決了衰減對光網(wǎng)絡(luò)傳輸速率與距離的限制，更重要的是它開創(chuàng)了1550nm頻段的波分復(fù)用，從而將使超高速、超大容量、超長距離的波分復(fù)用（WDM）、密集波分復(fù)用（DWDM）、全光傳輸、光孤子傳輸?shù)瘸蔀楝F(xiàn)實(shí)，是光纖通信發(fā)展*的一個(gè)劃時(shí)代的里程碑。在目前實(shí)用化的光纖放大器中主要有摻鉺光纖放大器（EDFA）、半導(dǎo)體光放大器（SOA）和光纖拉曼放大器（FRA）等，其中摻鉺光纖放大器以其*的性能現(xiàn)已廣泛應(yīng)用于長距離、大容量、高速率的光纖通信系統(tǒng)、接入網(wǎng)、光纖CATV網(wǎng)、軍用系統(tǒng)（雷達(dá)多路數(shù)據(jù)復(fù)接、數(shù)據(jù)傳輸、制導(dǎo)等）等領(lǐng)域，作為功率放大器、中繼放大器和前置放大器
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