A square wave is not a single signal but a combination of multiple sine waves added together at specific frequencies and amplitudes. This simulation demonstrates that concept using an op-amp based summing amplifier. Five sinusoidal inputs, each representing a harmonic component of a square wave, are applied through equal input resistors. The operational amplifier linearly sums these signals and produces a composite output waveform. The lowest-frequency harmonic defines the overall shape, while h
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A square wave is not a single signal but a combination of multiple sin…
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