5 marksOperational Amplifiers
CAPE Physics Unit 2 · 2010 · Paper 2 · Question 5(a)
Operational amplifier circuits.
Show that the closed loop gain, A, of the non-inverting operational amplifier circuit in Figure 4 is given by A = (R_i + R_f) / R_i. Clearly state any assumptions made about the properties of the op-amp.
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