can someone please assist to make the square wave plot at 50Hz

fs = 1000;

f = 4; %amount of square waves of graph

t = 0:1/fs:1-1/fs;

y = 3 * square(2 * pi * f * t); %generating the square wave

plot(t, y, 'LineWidth', 2)

xlabel('Time (s)')

ylabel('Amplitude')

title('Square Wave with 50 Hz Frequency and 4 Hz Period')

grid on

ylim([-5, 5]) % Set y-axis limits

the code is above . just struggling to make the square wave plot at 50Hz . I dont seem to understand where to modify the code to plot the square wave at 50Hz

Answer 1

[Manikanta Aditya]

Hi,

To plot a square wave at 50 Hz, you need to adjust the frequency value f in your code. The frequency of the square wave is proportional to the argument of the square function, which is 2*pi*f*t in your code.

fs = 1000; % Sampling frequency
f = 50; % Frequency of the square wave (50 Hz)
t = 0:1/fs:1-1/fs; % Time vector

y = 3 * square(2 * pi * f * t); % generating the square wave

plot(t, y, 'LineWidth', 2)
xlabel('Time (s)')
ylabel('Amplitude')
title('Square Wave with 50 Hz Frequency')
grid on
ylim([-5, 5]) % Set y-axis limits

Thanks!

Answer 2

[Hassaan]

fs = 1000; % Sampling frequency
f = 50;    % Frequency of the square wave

% Time vector from 0 to 1 second, with step size of 1/fs
t = 0:1/fs:1-1/fs;

% Generating the square wave
% square(2 * pi * f * t) generates a square wave with amplitude between -1 and 1
% Multiplying by 3 scales the wave to be between -3 and 3
y = 3 * square(2 * pi * f * t);

% Plotting the square wave
figure; % Opens a new figure window
plot(t, y, 'LineWidth', 2, 'Color', 'b'); % 'k' stands for black color
hold on; % Keeps the plot for further additions

% Adding a zero line for reference, making it easier to see the wave oscillation
plot(t, zeros(size(t)), '--', 'Color', [0.5 0.5 0.5]);

hold off; % No more additions to this plot

% Enhancing plot aesthetics
xlabel('Time (s)', 'FontSize', 12, 'FontWeight', 'bold');
ylabel('Amplitude', 'FontSize', 12, 'FontWeight', 'bold');
title('50 Hz Square Wave Plot', 'FontSize', 14, 'FontWeight', 'bold');
grid on; % Adding a grid for better readability

% Setting y-axis limits
ylim([-5, 5]);

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[Manikanta Aditya]

@Hassaan, Looks like you answered the same thing I mentioned in above answer.