![]() ![]() The higher the amplitude of the harmonic frequency, the greater the change in the base wave’s shape. Harmonics produce variations in the shape of the base wave. There are some key points to be made here. Using the circuit in Figure 2, we can shift the amplitude, phase, and frequency of the harmonic. Circuit with harmonic enhancement switched off. The operation of the harmonic switch is demonstrated in Figure 3.įIGURE 3. Simulation circuit used in Figure 1.Ī harmonic switch was added so that the enhancement could be switched off and the base frequency waveform viewed. The base frequency is in black and the sine wave is in red.įigure 2 shows the simulated circuit used to create the wave form in Figure 1.įIGURE 2. ![]() I put a square wave source in series with a sine wave source at twice the square wave's frequency and viewed the result with a virtual dual trace oscilloscope. Enhanced square wave with second harmonic interference. To start off, I simulated a base square wave with a sine wave harmonic at twice the base frequency as in Figure 1.įIGURE 1. The term can also refer to the ratio of the frequency of such a signal or wave to the frequency of the reference signal or wave. Harmonics form a base line for testing, comparing, and explaining various circuits. This article uses simulation to explore harmonics, which are whole number multiples of a base frequency. ![]()
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