電験三種の電子回路

2024年5月6日 21:46

メモ用、電気電子の院試対策と電験対策に使ってください

R2
問13 オペアンプの特徴ボルテージフォロワー

問18 エミッタ接地トランジスタ回路

VCC＝R2×IC+VCE

import matplotlib.pyplot as plt
import numpy as np

# Given data points
data_points = [(6, 6), (4, 8), (8, 4)]

# Extract x and y values from data points
x_values = [point[0] for point in data_points]
y_values = [point[1] for point in data_points]

# Function to calculate IC based on VCE
def calculate_IC(VCE):
    return -VCE + 12

# Generate VCE values for plotting the characteristic curve
VCE_values = np.linspace(0, 12, 100)
IC_values = calculate_IC(VCE_values)

# Plotting
plt.figure(figsize=(8, 6))

# Plot the characteristic curve
plt.plot(VCE_values, IC_values, label='IC = -VCE + 12', color='blue')

# Plot the data points
plt.scatter(x_values, y_values, color='red', label='Data Points')

# Annotate each data point with its coordinates
for (x, y) in data_points:
    plt.text(x, y, f'({x},{y})', fontsize=9, ha='right')

# Labeling the axes and title
plt.xlabel('VCE (V)')
plt.ylabel('IC (A)')
plt.title('Characteristic Curve and Data Points')
plt.legend()

# Set grid
plt.grid(True)

# Show plot
plt.show()