FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTIONPREHEAT
RAPID-START
INSTANT-START
COLD CATHODE
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
IN A PREHEAT LAMP THE CIRCUIT UTILIZES A SEPARATE STARTER, WHICH IS A SMALL CYLINDRICAL DEVICE THAT PLUGS INTO A PREHEAT FIXTURE. WHEN THE LAMP CIRCUIT IS CLOSED, THE STARTER ENERGIZES THE CATHODES AFTER A 2-5 SECOND DELAY, IT INITIATES A HIGH VOLTAGE ARC ACROSS THE LAMP, CAUSING IT TO START.
PREHEAT LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTIONPREHEAT
RAPID-START
INSTANT-START
COLD CATHODE
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
RAPID-START LAMPS
IN A RAPID-START LAMP THE CIRCUIT ELIMINATES THE DELAY INHERENT IN PREHEAT CIRCUITS BY KEEPING THE CATHODE CONSTANTLY ENERGIZED. WHEN THE LAMP CIRCUIT IS ENERGIZED, THE ARC IS STRUCK IMMEDIATELY. NO EXTERNAL STARTER IS REQUIRED.
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTIONPREHEAT
RAPID-START
INSTANT-START
COLD CATHODE
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
INSTANT-START LAMPS
USE A HIGH-VOLTAGE TRANSFORMER TO STRIKE THE ARC WITHOUT ANY CATHODE PREHEATING.
MORE EXPENSIVE THAN RAPID-START .
LESS EFFICIENT.
AVAILABLE IN SIZES THAT RAPID-START IS NOT.
START AT LOWER TEMPERATURES.
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTIONPREHEAT
RAPID-START
INSTANT-START
COLD CATHODE
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
COLD CATHODE
COLD CATHODE TUBES USE A LARGE, THIMBLE SHAPED CATHODE & A HIGH-VOLTAGE TRANSFORMER TO STRIKE THE ARC.
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTIONPREHEAT
RAPID-START
INSTANT-START
COLD CATHODE
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
COLD CATHODE
CHARACTERISTICS OF COLD CATHODE TUBES:VERY LONG LIFE.
UNAFFECTED BY THE NUMBER OF STARTS.
LOWER OVERALL EFFICIENCY.
USED WHERE LONG CONTINUOUS RUNS ARE REQUIRED (ARCHITECTURAL LIGHTING).
READILY DIMMED.
OPERATE WELL AT VARYING AMBIENT TEMPERATURES.
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FOUR-FOOT STRAIGHT LAMP:
UTILIZES 40 WATTS OR LESS.MOST COMMON.
EIGHT-FOOT STRAIGHT LAMP:
GREATER EFFICACY BUT SHORTER LIFE.
U-SHAPED LAMPS:
USED IN SQUARE OR COMPACT FIXTURES ( 5 INCHES TO 48 INCHES LONG).
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
WARM WHITE FLUORESCENT LAMPS: 35000 K
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
COOL WHITE FLUORESCENT LAMPS: 4200K
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
COOL WHITE DELUXE LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATIONCOLOR RENDITION
EFFICACY
LAMP LIFE
LUMEN MAINTENANCE
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATIONCOLOR RENDITION
EFFICACY
LAMP LIFE
LUMEN MAINTENANCE
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATIONCOLOR RENDITION
EFFICACY
LAMP LIFE
LUMEN MAINTENANCE
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATIONCOLOR RENDITION
EFFICACY
LAMP LIFE
LUMEN MAINTENANCE
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATIONADVANTAGES
DISADVANTAGES
APPLICATION
NEON-VAPOR LAMPS
ADVANTAGES:HIGH EFFICACY.
LONG LAMP LIFE.
INSTANT START & RESTART.
FEWER HEAT AND GLARE PROBLEMS.
RELATIVELY INEXPENSIVE.
MINIMAL HEAT GAIN PROBLEMS.
INCREASING RANGE OF SHAPES.
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATIONADVANTAGES
DISADVANTAGES
APPLICATION
NEON-VAPOR LAMPS
DISADVANTAGES:LARGE SIZE CAUSES STORAGE, HANDLING & RELAMPING PROBLEMS.
ACCURATE BEAM CONTROL IS NOT POSSIBLE.
LAMP LIFE IS EFFECTED BY THE NUMBER OF STARTS.
EXPENSIVE DIMMING.
REQUIRES A BALLAST.
LAMPS CONTAIN TOXIC MATERIALS: MERCURY & PHOSPHOR
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
DESCRIPTION:
GLASS TUBES ARE FILLED WITH IONIZED NEON GAS.
COLOR:
PINK TO DARK RED DEPENDING ON THE PRESSURE.
DIFFERENT COLORS CAN BE OBTAINED BY SUBSTITUTING HELIUM FOR NEON OR MIXING THE TWO GASES.
EFFICIENCY:
LOW (ABOUT ½ THE EFFICACY OF CONVENTIONAL FLUORESCENT LAMPS) BUT THEY OPERATE SATISFACTORILY IN VERY COLD WEATHER.
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
FLUORESCENT LAMPS
INTRODUCTION
LAMP CONSTRUCTION
BALLASTS
LAMP TYPES
OPERATION
EVALUATION
APPLICATION
NEON-VAPOR LAMPS
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