plot ib versus vbe as function of six values of vce for a common emitter cjt in matlab

main.m
% Define the C-JT transistor parameters
Is = 1e-15;  % Saturation current
Vt = 26e-3;  % Thermal voltage

% Common-Emitter Configuration
beta = 100;     % Current gain
VCC = 10;       % Collector supply voltage

% Define the Base-Emitter voltage range
VBE = linspace(0.2, 0.8, 6);  % Six values of V_BE

% Define the Collector-Emitter voltage range
VCE = linspace(0, 5, 100);  % You can change 100 to more values for better resolution

IB = (Is / beta) * (exp(VBE / Vt) - 1);  % Base current calculation

figure;
hold on;

for i = 1:length(VBE)
    IC = Is * (exp(VBE(i) / Vt) - 1) - (1 + beta) * IB(i);  % Calcualting the collector current
    plot(VCE, IC .* 1e3, 'DisplayName', ['V_{BE} = ' num2str(VBE(i)) 'V']);
end

hold off;
xlabel('V_{CE} (Volts)');
ylabel('I_C (mA)');
title('Common-Emitter I_C vs. V_{CE}');
legend;
grid on;
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