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中山◆電機◆電子學題庫

【非選題】

4.(20%)
62f5b27310a59.jpg


【題組】

(b) Figure 4.b shows the circuit for determine the 741 op-amp output resistance when vo is positive and 62f5b2a91a790.jpg is conducting most of the current. Using the resistance of the62f5b2f9e14c0.jpg network calculated in 4.(a) and neglecting the large output resistance of62f5b2dd9b348.jpg, find Ro when62f5b2a91a790.jpg is sourcing an output current of 5mA. (10%,10%)