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題 名 | Novel Applications of Operational Mirrored Amplifiers with Buffers=有緩衝器的運算電流鏡放大器的奇妙應用 |
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作 者 | 侯俊禮; 沈智傑; 黃英傑; | 書刊名 | 中原學報 |
卷 期 | 23:1 1995.01[民84.01] |
頁 次 | 頁133-139 |
分類號 | 448.5 |
關鍵詞 | 運算浮接放大器; 運算電流鏡放大器; 緩衝器; Operational floating amplifiers; OFAs; Operational mirrored amplifiers; OMAs; Buffers; |
語 文 | 英文(English) |
中文摘要 | 許多論文已討論了運算浮接放大器(OFA)的一些應用。因OFA可構成多種主動網路元件,故OFA比運算放大器及第二代電流傳輸器多變化及更有彈性。作者建議在OFA的二個輸出端點各加一個緩衝器。由另一個觀點來看,本文要用單一個OFA同時得到輸出電流及輸出電壓。不過作者用二個AD844及一個運算放大器即可做成二個緩衝器的運算電流鏡放大器(OMA)。用緩衝器避免負載效應(即令流過運算電流鏡放大器的X端及V端之間元件的電流等於流通Z端的電流)。而有緩衝器的OMA與有緩衝器的OFA表現相似,二者的差別僅在於某一個輸出端點的電流方向相反。有緩衝器的OFA與OMA的積體電路將來大有可為。 |
英文摘要 | Many papers have dealt with some applications of operational floating amplifiers (OFAs). They mentioned that OFAs are versatile and more flexible than op amps and CCIIs, for OFAs can construct many kinds of active network elements. The authors propose to add two buffers to each of the two output terminals of an OF A. From another point of view, this paper wants to obtain both the output current and the output voltage simultaneously using a single OF A. And the authors deal with operational mirrored amplifiers (OMAs) with two buffers because they can be constructed using two AD844 and an op amp. The buffers are used to avoid loading effect (i. e. to keep the current flowing through the components between the X terminal and the V terminal of an OMA equal to the current flowing the Z terminal). Such an OMA is similar in performance to an OF A with two buffers; the only difference between them is the opposite current fiowing direction in one of the output terminals. The ICs of OFAs and OMAs with buffers have great potential in the future. |
本系統中英文摘要資訊取自各篇刊載內容。