This is a summing amplifier circuit using an op-amp. It combines multiple input signals into a single output by summing them through input resistors. By feeding sine waves of different odd harmonics (like 1st, 3rd, 5th, etc.) with decreasing amplitudes, the circuit can approximate a square wave at the output. #opamp #electronicsrd #ElectronicsEducation | Electronics Education

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The Summing Amplifier shown here demonstrates how multiple harmonic sine waves can be combined to form a square wave using the principle of Fourier synthesis. In this simulation, five harmonics — the fundamental frequency and its odd harmonics (3rd, 5th, 7th, and 9th) — are generated individually and then summed by the op-amp-based summing amplifier. Each harmonic has a specific amplitude ratio and phase relation, such that when added together, the resulting waveform closely approximates a squar

L3.3 Summing Amplifier & its applications? Unit III | KEC101/201 Electronics by Lalit sir