Assertion: lamp | /r/HasProperty | powered by an ac voltage source
Facets:
value: in order to supply a nearly constant current
type: PURPOSE
value: in practical use
type: OTHER
Source sentences:
text: In practical use, the lamp is powered by an AC voltage source in series with an inductive "ballast" in order to supply a nearly constant current to the lamp, rather than a constant voltage, thus assuring stable operation.
text: In practical use, the lamp is powered by an AC voltage source in series with an inductive "ballast" in order to supply a nearly constant current to the lamp, rather than a constant voltage, thus assuring stable operation.