# ChatGPT prompt: Write a pyspice AC tank ladder oscillator # for adiabatic computational circuitry that will run in google colab # and produce a plot of the oscillator output !apt-get install -y libngspice0-dev !pip install PySpice import matplotlib.pyplot as plt import numpy as np from PySpice.Spice.Netlist import Circuit from PySpice.Unit import * # Create a new circuit circuit = Circuit('LC Oscillator') # Define the ladder network parameters n = 5 # number of stages L_value = 1@u_mH C_value = 1@u_uF # Add the ladder network to the circuit for i in range(n): circuit.L(i+1, 'n{}'.format(i), 'n{}'.format(i+1), L_value) circuit.C(i+1, 'n{}'.format(i+1), circuit.gnd, C_value) # Add a sinusoidal voltage source as input circuit.SinusoidalVoltageSource(0, 'n0', circuit.gnd, amplitude=1@u_V) # Perform an AC analysis simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.ac(start_frequency=1@u_Hz, stop_frequency=1@u_GHz, number_of_points=500, variation='dec') # Plot the output plt.figure(figsize=(10, 6)) plt.title("LC Oscillator Output") plt.plot(np.log10(analysis.frequency), np.abs(analysis['n5'])) plt.xlabel('Log Frequency [Hz]') plt.ylabel('Voltage [V]') plt.grid() plt.show()