Question

Flee View Tesis Help View any ww R= 6 kA, R2 = 3 kN Determine the closed loop gain of this circuit b: Determine the output voltage for v, 1,3V). Verify these results for in Multism. You can use the 3T Viral Op-Amp device shown in the images below. lleure s in your simulation to observe larger output voltages MarRool Air

Answer 1

Rosa Vela to lo 3R = 662 m Solutions Giren circuit diagram- As cumeat evdering through the inverting and non-investing input terminal of op-Amp is zeso. o voltage drop across 'R's will be | Vp = Vs volt ER2=362 + zero volt Hence

to virtual grouod of operational Amplifier- Vo = Aoc (ut-01 As open loop gain is infinity for ideal op. Amp - utav ie; Up = Un = Us volt News, using woltage dimider across 'Ro recito - Ver Do otros 4, Vkg = Din = Vs .: Voz no lehet kez) * closed to op Gain of the circuit - G= Vo = (R1 + Rz) + G- f+ R, VV R - V R2 G= 1+ All G= 3 VV Now, when U = I volt - Vo= 3x1 Vo = Go Vs » Vo = 3 volt when Vs = 3 volt Vo = 3x3 Vo = groet novo Using MULTISIM We can verify our calculatsion-

. . . ' s . . . . . . . U . . . . . . . . . . .. . . . . . . . . . . . . . ' V ' P . . . . . . . . . . . . . . . ::1.0kg . . .UNE , . . . . . . . . . . . . . . N . . V1 ....... N · OPAMP. 3T VIRTUAL. 1Vpkirin )1kHz... (1 . - Z oo...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N . . . (Rs can take any value except infinity since current enter through non- : inverting 'terminal is zero) .. . . .. . . . . . . . . . . . . . . . . . . . . : Circuit for measuring Voltage gain

Analyses and Simulation Active Analysis: AC Sweep Interactive Simulation DC Operating Point Frequency parameters Output Analysis options Summary AC Sweep Transient Reset to default 10 DC Sweep Single Frequency AC Start frequency (FSTART): Stop frequency (FSTOP): Sweep type: Number of points per decade: Vertical scale: Decade 1000 3 Parameter Sweep Logarithmic Noise Frequency parameter: Output Analysis options Summary Variables in circuit: All variables Monte Carlo Selected variables for analysis: All variables Vivo MV) Fourier Temperature Sweep Distortion PR1) I(R1) I(R2) I(RS) I(V1) PR2) PRS) P(V1) V(1) V(3) V(vo) V(vs) Sensitivity > Add > Worst Case Remove Noise Figure Edit expression... Pole Zero Transfer Function Add expression... Trace Width Batched User-Defined Run Save Cancel Help Circuit simulation using Multisim

Design1 AC Sweep Cursor V(vo)/V (v3) y2 dx 1.0000 3.0000 3.2441 3.0000 2.2441 26.3340p 11.7348p 445.6131m dy dy/dx 1/dx Magnitude (3.2441. 3.0000) Voltage Gain = 3 V/ 10k 100 Frequency (Hz) elected Trace:V(vo)//(vs) | Selected Cursor: 2 Measurement of voltage gain using A.C sweep analysis

· Using Voltage Probe to find the D.C Node voltages

. . D . . . U . . . . . . . . . . . Vidc): 1.00 V . . . . . . . . . . .... '1.05.2....... . V . . . P R 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vs · · · · · · · · · :OPAMP. 3T VIRTUAL:. 36kg . 1 . . . . . . Measurement of voltages when Vs= 1 Volt ,the obtained Vo =3 Volt using Multisim

· ····R · · · · · · · · · · · · U11 · · · · · · · · · · · · · · · · · V(dc): 3.00 V · · · .. ... ' ' 1 n r . . . . . . . . 1.0K2 . '. . . . . . . V . PR1.... . . . . . . . Vs....... OPAMP-3T_VIRTUAL: 360 :: . 3V .... . . . ' ' . D . . . . . . . . Measurement of D.C voltages at output terminal when Vs=3Volt , Vo=9 Volt using MULTISIM