parallel cathode heating, <of a discharge lamp>
type of heating of the electrodes of a discharge lamp in which the electrodes are fed by separate circuits
Note 1 to entry: Each electrode is usually connected across a low-voltage winding that can be part of the ballast and provides the heating current. In certain circuits, this low voltage is automatically decreased after the arc has struck.
Note 2 to entry: This entry was numbered 845-07-72 in IEC 60050-845:1987.
Note 3 to entry: This entry was numbered 17-860 in CIE S 017:2011.