英文翻譯技巧ppt(參考版)
2024-10-21 19:48本頁面
【正文】 s base, it allows current to flow from collector to emitter, and that transistor in turn pulls current from the base of the pass transistor. This arrangement lets an opamp capable of driving a few tens of milliamps control an amp or so of current across the pass transistor. 。這樣的安排可以讓一個運放有幾十毫安的驅(qū)動能 力來控制一個放大器或者控制調(diào)整管的電流。s output level needlessly because that puts an unnecessary load on the output stage of the error amp. 8. 一個 opamp通過調(diào)節(jié)輸出電壓的方式來使兩個輸入端保持平衡。s minimum hFE is 40, so the minimum current would be more like 225mA. You don39。s default value has been lowered. The D44H1139。你沒有必要增加電路的電流輸出能力了，因為這會給 誤差放大器徒然添加不必要的負載而已。 D44H11的最小 HFE是 60，所以這個 電路的最小電流輸出大約是 330ma。 If you do run separate wires from the control and sense grounds to the load, you should also connect the ground of the unregulated section of the power supply to the negative side of the load to avoid a ground loop. Also, beware that there is a risk to remote sensing: it greatly increases the size of the error amp39。如果你加上了 遠距檢測，你必須測試電源是否震蕩，尤其是使用了 Jung推薦的高速運放。 impedance is too low. 6. 如果你確實使用了兩個獨立的線從控制和感應地接到了負載上， 你應該將非穩(wěn)壓的電源供應的負端也接到負載負端，以避免接地有回路環(huán)。t use a film bypass cap on the error amp39。s power connection. Notice that V+ es from the output of the power supply. The error amp runs from the regulator39。 C3也必 須去掉，因為你不能在誤差放大器的 V+添加更多的薄膜旁路電容，否則 由于輸出電容的阻抗太低，將使運放變得不穩(wěn)定。誤差放大器使用的是經(jīng)過穩(wěn)壓的干凈的電源而非簡單濾波 的非穩(wěn)壓電源。s output is why it can only sink current.) As I see it, the primary advantage of this configuration is that the CCS indirectly limits the maximum output current of the regulator to a reasonable value. A short across the output of a stock Sulzer regulator would probably destroy the pass transistor. 5. 另一個重要的改變是誤差放大器的電源的連接。而老版本 Sulzer穩(wěn)壓器在短路輸出的情況下將 會損壞調(diào)整管。 （這個連接到運放輸出的二極管就是為什么他只能吸收電流的原因）。 Jung穩(wěn)壓器使用了一個不 同的穩(wěn)壓機制。 Do unto him as he does unto others. “這斷子絕孫的阿
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