Assertion: electronic ballast | /r/CapableOf | supply power
Facets:
value: to the lamp
type: TRANSITIVE-OBJECT
value: usually
type: DEGREE
Source sentences:
text: Electronic ballasts usually supply power to the lamp at a frequency of 20,000 Hz or higher, rather than the mains frequency of 50 – 60 Hz; this substantially eliminates the stroboscopic effect of flicker, a product of the line frequency associated with fluorescent lighting (see photosensitive epilepsy).