التفاصيل البيبلوغرافية
| العنوان: |
On Impedance Evaluation in Feedback Circuits. |
| المؤلفون: |
Corsi, Francesco, Marzocca, Cristoforo, Matarrese, Gianvitom |
| المصدر: |
IEEE Transactions on Education. Nov2002, Vol. 45 Issue 4, p371. 9p. 16 Diagrams. |
| مصطلحات موضوعية: |
ELECTRIC impedance, FEEDBACK control systems |
| مستخلص: |
One of the main benefits of negative feedback is the ability to control the impedances in linear active networks (LANs). Traditionally in undergraduate courses, the design of a feedback circuit is cast in terms of a two-port analysis, since the closed-loop properties of the circuit are expressed in terms of the corresponding open-loop ones. Therefore, the designer can directly identify the proper feedback topology and adjust the amount of feedback based on the specified closed-loop performances. However, there are practical situations in which a two-port analysis may lead to incorrect results if applied inappropriately or cannot be applied at all. In this paper, the authors show how it is possible to achieve a better insight of these problems in the light of Blackman's method. Moreover, after a derivation of the formula as a consequence of the superposition principle applied to a LAN, they discuss, with reference to some typical examples, the conditions that must be met for the correct application of the two-port method. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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