This simulation demonstrates the working of a BJT differential amplifier under dynamic signal conditions. Two matched transistors share a common emitter resistance, forming a long-tailed pair. When a sinusoidal input is applied, the tail current remains almost constant, forcing current redistribution between the two transistors. As one transistor conducts more, the other conducts less, producing equal-magnitude but opposite-phase outputs at the collectors. The waveform plot clearly shows this ph

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This is a BJT amplifier circuit simulation with its input and output waveforms. The green trace represents the input AC signal (1 kHz sine wave), while the red trace shows the amplified output signal. The circuit uses a common-emitter configuration with biasing resistors and coupling capacitors. The output clearly has a higher amplitude (approx. 1.74 V peak-to-peak) compared to the input (approx. 500 mV), demonstrating the voltage gain typical of a BJT amplifier stage. #ElectronicsEducation #ele