Electrical Engineering ⇒ Topic : Antilog Amplifier
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Gaurav
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Antilog Amplifier The schematic diagram is shown in Figure (a). The voltage Vi at the non-inverting terminal of OP Amp 1 is: Figure (a) Antilog amplifier. Therefore, from Eq. (1) and Eq. (2), it can be written as: The output voltage V2 of OP Amp 2 is given by Vo = IRf Substituting the value of I from Eq. (4) to Eq. (3), we obtain
Equation (5) shows that Rf If appears as the scale factor that can be adjusted by changing either Rf or If. | |
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