Electrical ballast

Lamp starter, required with some inductor type ballasts. Connects both ends of the lamp together to

Modern ballast for powering 4 F32T8 office lamps

Several typical magnetic ballasts for fluorescent lamps. The top is a high-power factor rapid start series ballast for two 30-40 W lamps. The middle is a low power factor preheat ballast for a single 30-40 W lamp while the bottom ballast is a simple inductor used with a 15 W preheat lamp.

Electronic ballast of a compact fluorescent lamp

An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the negative differential resistance artifact in the tube's voltage-current characteristic.

单词	Ballast factor
释义	Ballast factor 英语百科 Electrical ballast An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the negative differential resistance artifact in the tube's voltage-current characteristic.
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Ballast factor

Electrical ballast