For the op-amp circuit configuration shown in Fig. 1(b), it is given that, R1 = 2kN, R4 = 2kN, R3 = 0 andv¡ = 1V. %3D i. Calculate the value of R2 so that vo = –10 V. SO ii. Determine the power dissipated by the resistor R4. iii. Using the result of (b) i, determine the gain of the amplifier considering R4 = 0.

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Multistage Amplifier

The multistage amplifier is generally a voltage or power amplifier. The multistage amplifier has a number of single stage amplifier that are cascaded together. Since a single stage amplifier output is not useful, they are being replaced with multistage amplifiers or multistage transistor amplifiers. The multistage amplifier are used where the gain required is high or the input signal is very small such that only a single stage amplifier cannot amplify it.