When TH2 and TH3 are gated, the capacitor discharges around two parallel paths, reducing the currents in TH 1 and TH4 to zero and reverse-biasing them. The capacitor then charges with the reverse polarity through thyristorsTH2andTH3anbsp;...
|Title||:||Thyristor control of A.C. motors|
|Author||:||J. M. D. Murphy|
|Publisher||:||Pergamon - 1973|