TW-FLY-I Fourier Decomposition Synthesizer Introduction: Any periodic function can be expressed by Fourier series, which is widely used in mathematics, physics, engineering technology and other fields. For example, to eliminate the noise of some electrical appliances, instruments or machinery, it is necessary to analyze the main frequency spectrum of these noises, so as to find out the methods to eliminate the noise; If you want to get some special periodic electrical signals, you can use Fourier series synthesis to synthesize a series of sinusoidal waveforms into the required electrical signals. TW-FLY-I Fourier Decomposition Synthesizer produced by our company uses a series resonant circuit to analyze the frequency spectrum of square wave electrical signals, measure the amplitude of fundamental frequency and multiple frequency signals of each order and the phase relationship between them, then reverse this process, and use an adder to synthesize square wave signals from a group of sinusoidal signals with frequency multiplication and adjustable amplitude and phase. Through this experiment, students can deeply understand the physical significance of Fourier decomposition and synthesis, and understand some basic characteristics of serial resonant circuit and its application in frequency selection circuit. Experiment content: 1. Fourier decomposition of square wave. 2. Synthesize a group of odd frequency doubled sine waves into square waves. 3. Decomposition and synthesis of triangular wave. Technical parameters: 1. Square wave signal frequency: 1KHz Amplitude: 0.4 － 3V continuously adjustable output impedance<12 2. Triangular wave signal frequency: 1KHz Amplitude: 0.4 － 2V Continuous adjustable error:<3% 3. Sine wave signal frequency: 1KHz Error:<3% Amplitude: 0-1.5V Continuous adjustable Frequency: 3KHz Error:<2% Amplitude: 0-1V continuously adjustable Frequency: 5KHz Error:<1% Amplitude: 0 － 0.6V continuously adjustable Frequency: 7KHz Error:<1% Amplitude: 0 － 0.6V continuously adjustable
Introduction: Any periodic function can be expressed by Fourier series, which is widely used in mathematics, physics, engineering technology and other fields. For example, to eliminate the noise of some electrical appliances, instruments or machinery, it is necessary to analyze the main frequency spectrum of these noises, so as to find out the methods to eliminate the noise; If you want to get some special periodic electrical signals, you can use Fourier series synthesis to synthesize a series of sinusoidal waveforms into the required electrical signals. TW-FLY-I Fourier Decomposition Synthesizer produced by our company uses a series resonant circuit to analyze the frequency spectrum of square wave electrical signals, measure the amplitude of fundamental frequency and multiple frequency signals of each order and the phase relationship between them, then reverse this process, and use an adder to synthesize square wave signals from a group of sinusoidal signals with frequency multiplication and adjustable amplitude and phase. Through this experiment, students can deeply understand the physical significance of Fourier decomposition and synthesis, and understand some basic characteristics of serial resonant circuit and its application in frequency selection circuit.
