LAB 1: LTSpice Primer Record waveforms from the oscilloscope to a USB stick and paste these in your report. Demonstrate your simulations to the demonstrator in the lab. IF YOU DO NOT SUBMIT THIS LAB COMPLETED, YOUR FINAL LAB SCORE WILL BE ZERO REGARDLESS OF WHAT ELSE YOU SUBMIT. 1.1 Use LTSPICE only. Paste both simulated transient output graphs here. OUTPUT PLOT 1: OUTPUT PLOT 2: Paste DC values for Q2 BASE and Q1 EMITTER here: Q2 BASE: Q1 EMITTER: 1.2 Use LTSPICE only. Paste your BODE PLOT (gain vs frequency) here. BODE PLOT: Paste measured values here. Peak Gain (dB): -3 dB LOW frequency: -3 dB HIGH frequency:/n Start a new circuit in LTspice and enter the following dual-stage amplifier schematic: V2 C1 100n R2 10e6 R1 1500 Q2 BC547C D1 Z1N4148 Q1 BC547C R3 32 LAB 1: LTSPICE PRIMER R4 330 V1 -OUT C2 |100μ ● ● ● Set Source V1 to 9 V DC. Then set Source V2 Functions to SINE and set all numbers to 0. Then simulate and probe / measure the voltage at Q2 BASE and Q1 EMITTER. Now set Source V2 like this: Functions (none) PULSE(V1 V2 Tdelay Trise Tfall Ton Period Ncycles) SINE(Voffset Vamp Freq Td Theta Phi Ncycles) EXP(V1 V2 Td1 Tau1 Td2 Tau2) SFFM(Voff Vamp Fcar MDI Fsig) PWL(t1 v1 t2 v2...) PWL FILE: 3 DC offset[V]: Amplitude [V]: Freq[Hz]: 1000 .1 Tdelay[s]: 0 Theta[1/s]: 0 Phi[deg]: Ncycles: 0 0 Browse Additional PWL Points Make this information visible on schematic: ✓ 1.1 TRANSIENT ANALYSIS DC Value DC value: Make this information visible on schematic: Small signal AC analysis(.AC) AC Amplitude: AC Phase: Make this information visible on schematic: Parasitic Properties Series Resistance[2]: 1 Cancel 1k Parallel Capacitance[F]: Make this information visible on schematic: ✔ OK ● Record waveforms from the oscilloscope to a USB stick and paste these in your report. Demonstrate your simulation to the Lecturer in the lab. Then set Transient Simulation like this: Transient AC Analysis DC sweep Noise DC Transfer DC op pnt Perform a non-linear, time-domain simulation. Stop time: Time to start saving data: Maximum Timestep: Start external DC supply voltages at OV: Stop simulating if steady state is detected: Step the load current source: Skip initial operating point solution: Syntax: .tran [ [ ]] [ [ ]... .tran 0 50m 25m Cancel Probe, simulate and measure the output plot at node "OUT". You should see a OUT(V) vs Time (mS) graph. 50m 25m OK Now change the simulation to AC Analysis and set it like this: Transient AC Analysis DC sweep Noise DC Transfer DC op pnt Compute the small signal AC behavior of the circuit linearized about its DC operating point. Type of sweep: Number of points per decade: Start frequency: Stop frequency: .ac dec 100 1 100e6 Decade 1100 1 Syntax: .ac Cancel 100e6 Probe, simulate and measure the output plot at node "OUT". OK 1.2 AC ANALYSIS You should see a Gain(dB) vs Frequency graph. What is the peak gain (dB) and the upper and lower -3 dB frequencies?

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LAB 1: LTSpice Primer Record waveforms from the oscilloscope to a USB stick and paste these in your report. Demonstrate your simulations to the demonstrator in the lab. IF YOU DO NOT SUBMIT THIS LAB COMPLETED, YOUR FINAL LAB SCORE WILL BE ZERO REGARDLESS OF WHAT ELSE YOU SUBMIT. 1.1 Use LTSPICE only. Paste both simula