n.

any heavy material used to stabilize a ship or airship

coarse gravel laid to form a bed for streets and railroads

an attribute that tends to give stability in character and morals; something that steadies the mind or feelings

a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)

同義詞：ballast resistorbarretter

an electrical device for starting and regulating fluorescent and discharge lamps

同義詞：light ballast

Important design parameters for solid-state ballasts
Electronic ballasts without toroidal-magnetic-core and fluorescent lamps employ the same
Variation of temperature in ballasts under periodic fluctuation of boundary temperature
A comparative study on dimming control methods for electronic ballasts
Investigation of a New Control Strategy for Electronic Ballasts Based on Variable Inductor
White-noise modulation of high-frequency high-intensity discharge lamp ballasts
White-noise modulation of high-frequency high-intensity discharge lamp ballasts
A Driving Technology for Retrofit LED Lamp for Fluorescent Lighting Fixtures With Electronic Ballasts
An improved design procedure for LCC resonant filter of dimmable electronic ballasts for fluorescent lamps, based on lamp model
An improved design procedure for LCC resonant filter of dimmable electronic ballasts for fluorescent lamps, based on lamp model