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What are higher current harmonics? How does each of us contribute to the deterioration of the quality of electrical energy? What is the total harmonic content of current THD? You will find the answer to these and other questions in this film. Do you appreciate my work and want to support me? You can do it through Patronite: https://patronite.pl/burnos GwInstek GDM9061 review: • Metrology: Measurement of active, reactive pow... Active and reactive power measurement: • Metrology: What is reactive power, po... Electric energy measurements: • Metrology - Energy consumption part 2 ... AC power: • Metrology - Power measurements of ind... Energy, heat, power: • Metrology - Power measurement, direct current,... Table of contents: 00:00 - Introduction 02:36 - What are higher harmonics 04:09 - Signal decomposition into harmonics (fft - Fourier series) 04:55 - Causes of current harmonics 06:39 - Total harmonic distortion THD 08:58 - Why are higher harmonics bad? 12:11 - How to measure higher harmonics? 15:02 - Measurement results - LED bulbs 18:20 - Measurement results - LED power supplies 20:24 - Measurement results - household appliances 24:05 - Measurement results: computer, monitor, TV, ... 26:14 - THD for phone chargers 27:46 - THD for power supplies 31:18 - Summary: higher harmonics, THD #metrology #harmonics #electricalmeasurements