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Asked Oct 6, 2019
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Some of the exercises show op-amps with a positive supply voltage but no information about negative supply voltages. Whenever this is encountered, assume the negative supply voltage has the same magnitude as that of the positive supply
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Expert Answer

Step 1

Mark the current and node voltages in given circuit as shown below:

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R2 w R3 p R Rs

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Step 2

For ideal-op-amp, the current in inverting and non-inverting terminal are zero, due to the high input resistance of op-amp.

By virtual ground concept, the voltage at the inverting terminal should be equal to the non-inverting terminal.

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1 = 1 From the circuit 12R 0 ( 0) 72

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Step 3

Applying the nodal analysis a...

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1 1 1 2 0 0 1 0 0 R2 = 1 R R. R, 1+ .(1)

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Electrical Engineering

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