fluorescent lamp ballasts, fluorescent lamp ballasts with photocells, CPU programmed to control lighting as a function of time day, fluorescent lamp ballasts supplying current to control circuits associated with and including the CPU, dimming switches, variable output ballasts

'associ':28 'ballast':3,6,22,38 'circuit':27 'control':12,26 'cpu':9,33 'current':24 'day':19 'dim':34 'fluoresc':1,4,20 'function':16 'includ':31 'lamp':2,5,21 'light':13 'output':37 'photocel':8 'program':10 'suppli':23 'switch':35 'time':18 'variabl':36

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