# Voltage Out and Voltage In Calculations

Notes:

In the schematics, ground and chassis may be assumed to be common, unless specifically stated otherwise. Unless otherwise specified, assume that Op-Amps are ideal and that supply voltages are +/- 15 V.

3. Given that:

VD1 = 0.7V at ID1= 1 mA, n = 1 for diode D1

R1 = 500 ohms, R2 = 100 ohms, and Rl = 10 kilo-ohms

Vt = 25 mV

VDD = 10V

a, What is the small signal gain, Vout/Vin?

b. If the supply voltage VDD is changed to 15 V what is the small signal gain, Vout/Vin?

See attachment for diagram and better symbol representation

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#### Solution Summary

This solution contains a circuit diagram and explanations and calculations to determine the voltage out and voltage in for varying conditions. All formulas and brief explanations are included.

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