Display of the waveform and harmonic content of alternating electrical current in home appliances

The study of electricity in undergraduate programs in physics can be more motivating and efficient if to add new challenges such as the use of electronic circuits. In this paper, we explore the electronic resources of Arduino, electric current sensors based on electromagnetic induction, resistors, capacitors and computer software. We present the results and the methods to display the waveform of the electric current of some home appliances and the spectrum of frequency of these waveforms.

Keywords
Alternating current; Waveform; Arduino; Python; Direct Fourier Transform