Question

PART A) Parameters

 Vi = 40 mV 
  Ra = 15 kOhms 
  Rb = 47 kOhms 
  Rc = 68 kOhms 
  Rd = 3.3 kOhms 
  RL = 27 kOhms 

Rc Ro WW kwt Rd Ra ww +1 OV. Vi + w4 RL Do: Find P, V, i,, P., and the voltage gain of the circuit, i.e. 4, = Volts Volt where P is the power supplied by the input voltage source, V,, and P is the power supplied by the output of the opamp. Note that p. is NOT only the power absorbed by the load resistor, R. Hints: 1. To calculate P, you will need the current supplied by the input voltage source. 2. The power supplied by the output of the opamp is the power supplied by the internal dependent voltage-controlled voltage source just inside the opamp symbol. You must multiply v, by in

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PART B) Parameters

 Ix = 20 uA 
  Vy = 7 V 
  Ra = 39 kOhms 
  Rb = 220 kOhms 
  Rf = 68 kOhms 
  RL = 33 kOhms 

Answer 1

Given craut, Rc 876 O 1: dom e pe ot virov RU 2Tk Po voto, fo Are Applying Nodal analysis at mode , we get, V - Vo V, V2 Rau Rb + V - V 47k 1 1 > V, -0.04 15K 47V, - 1.88 +15V, 1512 705k 62V, 15/2 -1.88=0 But by virtual ground concept, tve terminal voltage of opamp is equal to ove terminal of Voltage of opamp. W*= 0 , Vo V=0 in we get 15V2 = -1-88 1 V2 = -0.1253931 В В.

Input power, Po - Vox li = 0.044 26667X 10-3 2.66667 mA loc Po = 0.10 66667 milliwalls current, co- ilti" Output + Vo-V2 Ve Rc RE = -08821167449-(-0.03562/052) 68k - 0.821167449 27k. = -0.0115520152x10-3- 0.030413609410 60 - -0.041965761 milliamps Power, Po= Voxio Po= 0.03 4460917 milli walls

Solving Сре get, Vor 1-36755 0632 V. Current lo=0