DESCRIPTION OF CIRCUIT FUNCTION NAME OF APPLICANT : Phoenix Industrial Co., Ltd. NAME OF PRODUCT : SELF -BALLASTED LAMP MODEL NO: PPS13/1 PPS20/1 PPS25/1 1. AC POWER SUPPLIED THOUGH BASE OF DEVICE IS RECTIFIED AND BOOSTED TO DC BY PASSING BOTH OF THE RECTIFYING CIRCUIT AND THE ELEVTROLYTIC CONDENSER AT THIS TIME ,ALL OF THE HARMFUL NOISE INCLUDING HIGH PREQUENCY NOISE OCCURRED IN SWITICHING CIRCUIT IS ELEMINATED WHEN THIS RECTIFIED DC IS PASSED THROUGH LINE FILTER 2. THE TRANSISTOR HALF BRIDGE INVERTER GENERATES THE 40KHz-50KHz HIGH FREQUENCY VOLTAGE POWER BY SWITICHING OPERATION OF THE TRANSISTORS WITH THE RECTIFIED DC POWER IN RECTIFYING CIRCUIT,AND THIS GENERATED HIGH PREQUENCY VOLATAGE POWER LIGHTS THE FLUORESCENT LAMP. 3.AT THIS TIME, LAMP IS LIGHTED AS TWO STEPS WHICH IS MAIN POWER IS PASSED TO FILAMENT AFTER PREHEATING OF PTC IN PRDER TO EXTEND LAMP LIFE BY AVOIDING THE RAPLDLY SCTTERING OF EMISSION MATERIAL ON FILAMENT 4.WHEN SWITCHING OPERATION OF ELECTRONIC BALLAST IS MADE UP,ACTION OF THE DIAC STOPS AS DISCHARGING THE CONDENSATED POWER IN CONDENSOR BY BOTH OF THE DIODE AND THE TRANSISTOR. USERS GUIDE THE TEXT OF THIS INSTRUCTIONS WILL BE PRINTED ON THE SURFACE OF THE INDIVIDUAL BOX AT THE TIME OF MASS PRODUCTION. 1.PRODUCT SPECIFICATION 1)COMMODITY : SELF BALLASTED LAMP 2)MODEL NO :PPS20/1 3)CONSUMPTION POWER 20W 4)INPUT VOLTAGE : AC 120 V 5)PREQUENCY OF INPUT LINE : 60 Hz 6)LIFE : 10,000 Hrs 2.USERS GUIDE ELECTRONIC BALLAST INSTANT ON, FLICKER-FREE AND LIGHT WEIGHT RELIABLE OPERATING TEMPERATUER RANGE : -10 TO 40 1) CAUTION PHOTOCELL DEVICE. DO NOT WITH DIMMING CIRCUITS, ELECTRONIC TIMERS OR DO NOT USE IN TOTALLY ENCLOSED FIXTURES, WHERE EXPOSED TO WEATHER, EMERGENCY EXIT FIXTURES OR LIGHTS. NEVER DISASSEMBLE OR MODIIFY THE LAMP. USE ONLY 120V 60 Hz CIRCUITS. RISK OF ELECTRIC SHOCK USE IN DRY LOCATIONS ONLY. DO NOT USE MORE THEN 25 LAMPS PER 20 Amp. BRANCH CIRCUIT INSTALL AND REMOVE LAMP FROM FIXTURE BY GRASPING THE PLASTIC BODY. 2)MOTE INTERFERENCE WITH THIS PRODUCT MAY CAUSE RADIO RADIOS,CORDLESS PHONES OR REMOTE CINTROL DEVICE IF INTERFERENCE OCCURS, RELOCATED THIS PREDUCT AWAY FROM THE DEVICE OR REMOVE THIS PRODUCT OUT OF THE OF SIGHT WITH THE REMOTE CONTROL RECEIVER DO NOT TOUCH THE LAMP AS SOON AS TURN OFF BECAUSE IT IS VERY HOT.