<https://engineering.electrical-equipment.org/forum/reply/harmonic-filter-for-better-power-quality-6#webpage>
<http://schema.org/datePublished>
"2010-10-17T18:13:06+00:00"^^<http://schema.org/Date>
<https://engineering.electrical-equipment.org/forum/reply/harmonic-filter-for-better-power-quality-6>