TY JOUR TI THE LIGHT-EMITTING DIODE LIGHT SOURCE INFLUENCE ON THE CURRENT SPECTRA AND THE SUPPLY NET VOLTAGES KW electric power quality KW light-emitting diode light sources KW the highest harmonics JO Bulletin of KSAU AU Boyarskaya, N.P. AU Dovgun, V.P. PY 2014 IS PB Krasnoyarsk State Agrarian University