If a certain op-amp has a closed-loop gain of 20 and an upper c... | Filo
If a certain op-amp has a closed-loop gain of 20 and an upper c... | Filo
6 months ago
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SOLVED:Consider the op-amp circuit shown in Fig. PIO.2, where the op amp has infinite input resistance and zero out put resistance but finite open-loop gain A (a) Convince yourself that β=R1 /(R1 R2) (b) If R1=10 k Ω, find R2 that results in Af=10 VN for the following three cases: (i) A=1000 V / V ; (ii) A=100 V / V ; (iii) A=12 V / V (c) For each of the three cases in (b), find the percentage change in Af that results when A decreases by 20 % . Comment on the results.
SOLVED:Consider the op-amp circuit shown in Fig. PIO.2, where the op amp has infinite input resistance and zero out put resistance but finite open-loop gain A (a) Convince yourself that β=R1 /(R1 R2) (b) If R1=10 k Ω, find R2 that results in Af=10 VN for the following three cases: (i) A=1000 V / V ; (ii) A=100 V / V ; (iii) A=12 V / V (c) For each of the three cases in (b), find the percentage change in Af that results when A decreases by 20 % . Comment on the results.
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