Lamp Electronic
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 NIB case of 10 Sylvania 4 Lamp Electronic Ballast QTP4x32T8 UNV ISN $119.00 Time Remaining: 9d 19h 19m Buy It Now for only: $119.00 |
 Techone 400W Street Lamp Cover and Electronic Ballast NEW $24.99 (1 Bid) Time Remaining: 15h 17m |
 Hatch HL224HO PS UV S Electronic T5 Fluorescent Ballast 1or2 Lamps 24W 120V 277V $14.99 Time Remaining: 7d 3h 24m Buy It Now for only: $14.99 |
 New Philips Advance Optanium Electronic Ballast IOPA 4P32 SC 4 lamp $15.00 Time Remaining: 21h 19m Buy It Now for only: $15.00 |
 Techone 400W Street Lamp Cover and Electronic Ballast NEW $24.99 Time Remaining: 1d 16h 18m |
 NIB case of 10 Sylvania 2 Lamp Electronic Ballast QTP2x32T8 unv isnsc $99.00 Time Remaining: 9d 19h 29m Buy It Now for only: $99.00 |
 Electronic Ballasts T8 32W for 2 Fluorescent lamps 20 $95.95 Time Remaining: 22d 18h 24m Buy It Now for only: $95.95 |
 LOT OF 10 ELECTRONIC BALLAST 4 LAMP RAPID START HI LO $9.99 Time Remaining: 1d 40m Buy It Now for only: $15.00 |
 Advance electronic ballast REB 4P32 SC for 3 or 4 F32T8 lamps $19.00 Time Remaining: 6d 14h 17m Buy It Now for only: $19.00 |
 FT40W 2G11 2 T5 Lamp Universal Electronic Ballast $7.20 Time Remaining: 16d 20h 4m Buy It Now for only: $7.20 |
 Box of 10 GE232 MVPS N Electronic Ballast 120 277V FOR 2 F32T8 fluorescent lamp $97.00 Time Remaining: 18d 15h 56m Buy It Now for only: $97.00 |
 Lot of 14 Electronic Ballast 2L T8 277V F32 F25 F17 TCP E21IS32277L 2 or 1 lamp $99.00 (1 Bid) Time Remaining: 14h 19m |
 Lot of 10 Sylvania QHE3x32T8 UNV PSX SC B 3 Lamps Electronic Ballast $90.00 Time Remaining: 21d 17h 45m Buy It Now for only: $90.00 |
 ACCUPRO T8 MODEL A3 RC 432IP 120 1 INSTANT START ELECTRONIC 4 LAMP LIGHT BALLAST $18.95 Time Remaining: 28d 13h 16m Buy It Now for only: $18.95 |
 GE B232I120RH 2 Lamp Instant Start Triad Electronic Ballast Lot of 4 NOS $40.00 Time Remaining: 16h 39m |
 TRIAD B432IUNVEL 4 LAMP T8 ELECTRONIC BALLAST LOT OF 10 $119.99 Time Remaining: 8d 21h 50m Buy It Now for only: $119.99 |
 Sylvania 2 Lamp T5 Electronic Ballast QTP2X54T5HO unv High Bay $34.95 Time Remaining: 3d 21h 20m Buy It Now for only: $34.95 |
 1 New Hatch Electronic Transformer Mod RS12 60M 120V for 12V Halogen Lamp $14.45 Time Remaining: 10d 14h 34m Buy It Now for only: $14.45 |
 LUTRON H3DT832CU210 Dimming Ballast Electronic 3D T8 2 Lamp $30.00 Time Remaining: 18h 12m |
 Lot of 10 GE B232I120EL ultra Electronic Ballast for 2 F32T8 Fluorescent Lamps $99.00 Time Remaining: 1d 6h 27m Buy It Now for only: $99.00 |
 10 FT40W2G11 Universal 3 Lamps Electronic Ballasts $71.95 Time Remaining: 24d 51m Buy It Now for only: $71.95 |
 2 NEW Philips Advance Centium ICN 3P32 N Electronic Lamp Ballast 120v 277v $26.99 Time Remaining: 17h 12m Buy It Now for only: $29.99 |
 NEW ADVANCE SMART MATE ELECTRONIC BALLAST KIT ICF 2S26 H1 LD 120 277v 26W LAMPS $16.95 Time Remaining: 3d 20h 49m Buy It Now for only: $16.95 |
 Headlight T4 Fluorescent Lamps Electronic Ballast 22W AYZ 01 220V AC New $4.59 Time Remaining: 4d 31m Buy It Now for only: $4.59 |
 5 New Sylvania 2 Lamp Electronic Ballast QTP2x32T8 unv isnsc $59.95 Time Remaining: 20d 23h 39m Buy It Now for only: $59.95 |
 Techone 400W Street Lamp Cover and Electronic Ballast NEW $24.99 (1 Bid) Time Remaining: 2d 17h 19m |
 Electronic Ballast 2 Lamps 120V $3.00 Time Remaining: 15d 23h 37m Buy It Now for only: $3.00 |
 F96T12 Electronic Ballast 1 or 2 T12 Fluorescent lamps $24.50 Time Remaining: 5d 21h 10m Buy It Now for only: $24.50 |
 NEW ADVANCE ELECTRONIC BALLAST 2 LAMP F54T5 HO 480 VOLT $49.99 Time Remaining: 20h 5m Buy It Now for only: $79.99 |
 Universal Traid B232IUNVHP B Electronic Ballast 2 lamp $11.50 Time Remaining: 17d 22h 48m Buy It Now for only: $11.50 |
 Universal Ballast 446 L SLH TC P 2 Lamp Electronic T12 Fluorescent $28.99 Time Remaining: 29d 20h 53m Buy It Now for only: $28.99 |
 10 Universal F34T12 F40T12 Electronic Ballast 2 Lamp Rapid Start 120V $135.00 Time Remaining: 8d 16h 11m Buy It Now for only: $135.00 |
 Triad Electronic Ballast 277V 3 or 4 Lamp F17 25 32 40 T8 B4321277RH A $4.99 Time Remaining: 14h 50m |
 10 GE232 MAX L ULTRA 2 lamp 4footT8 electronic ballast 120 277V 72262 $125.99 Time Remaining: 24d 22h 25m Buy It Now for only: $125.99 |
 FT40W2G11 2 Lamps 120 277V ELECTRONIC BALLAST Pk 5 $32.40 Time Remaining: 14d 12h 22m Buy It Now for only: $32.40 |
 NEW ELECTRONIC BALLAST 4 LAMP F32 FLUORESCENT 120VOLT 60 HZ FREE SHIPING $17.99 Time Remaining: 1d 19h 46m Buy It Now for only: $19.99 |
 Circular Fluorescent Electronic Ballast for FC12T9 32W Circular Lamp $9.99 Time Remaining: 3d 21h 4m Buy It Now for only: $9.99 |
 10 New GE Multi Volt T8 4 lamp Electronic Ballasts $100.00 Time Remaining: 21d 21h 7m Buy It Now for only: $100.00 |
 10 4 lamp T8 triad universal electronic ballasts $85.00 (1 Bid) Time Remaining: 3d 3m |
 HATCH MC70 1 F 120U ELECTRONIC METAL HALIDE BALLAST FOR 70W METAL LAMPS 120V $49.95 Time Remaining: 28d 9h 47m Buy It Now for only: $49.95 |
 ACCUPRO T8 MODEL AP RS 232IS 120 INSTANT START ELECTRONIC 2 LAMP LIGHT BALLAST $12.95 Time Remaining: 19d 21h 50m Buy It Now for only: $12.95 |
 Keystone KTEB 220 1 TP EMI C Electronic Ballast for 2 F20T12 or F20T8 Lamps $14.99 Time Remaining: 5d 16h 4m Buy It Now for only: $14.99 |
 10 TRIAD B332IUNVHP A 3 LAMP ELECTRONIC BALLAST $85.00 Time Remaining: 3d 3m |
 NIB case of 10 GE 2 lamp Electronic Ballast GE232MAX N Ultra 72266 $115.00 Time Remaining: 26d 1h 57m Buy It Now for only: $115.00 |
 Electronic Ballast Universal Lighting Technology B240R120HP0001 For F40T 12 Lamp $9.00 Time Remaining: 6d 17h 25m Buy It Now for only: $9.00 |
 10 TRIAD B232IUNVHP B 2 LAMP ELECTRONIC BALLAST $85.00 Time Remaining: 3d 3m |
 Sylvania 2 Lamp Electronic Ballast QTP2x32T8 unv isnsc $13.50 Time Remaining: 17d 14h 50m Buy It Now for only: $13.50 |
 Fluorescent Ballast FC22W 1 Lamp Electronic Circline RS $13.91 Time Remaining: 2d 18h 11m Buy It Now for only: $13.91 |
 MAGNETEK B432I277RH 4 Lamp Electronic Ballast $10.00 Time Remaining: 15d 18h 54m Buy It Now for only: $10.00 |
 Hatch FR 2600 electronic flurorescent ballast lamp NEW 26 watt $8.50 Time Remaining: 4d 16h 7m |
 SYLVANIA 2 LAMP 54WATT T5 ELECTRONIC BALLASTS $25.00 Time Remaining: 1h 19m Buy It Now for only: $25.00 |
 LOT OF 10 ELECTRONIC BALLAST 4 LAMP RAPID START HI LO $7.50 Time Remaining: 4d 20h 28m Buy It Now for only: $7.50 |
 Techone 400W Street Lamp Cover and Electronic Ballast NEW $24.99 Time Remaining: 5d 13h 26m |
 5 120 277V T8 Fluorescent 1 Lamp Electronic Ballast $32.40 Time Remaining: 1d 16h 42m Buy It Now for only: $32.40 |
 2 MOTOROLA TWO LAMPS ELECTRONIC BALLASTS M2 RN T8 1LL D 120 $64.99 Time Remaining: 7d 3h 59m Buy It Now for only: $64.99 |
 NEW OLD STOCK ADVANCE INSTANT START ELECTRONIC BALLAST TRANSFORMER LAMPS FIXTURE $3.99 Time Remaining: 23d 1h 32m Buy It Now for only: $3.99 |
 LOT OF 10 ELECTRONIC BALLAST 4 LAMP RAPID START HI LO $9.99 Time Remaining: 5d 1h 12m Buy It Now for only: $15.00 |
 10 Universal T8 Fluorescent 1 Lamp Electronic Ballast $71.95 Time Remaining: 1d 16h 40m Buy It Now for only: $71.95 |
 EP1 32IS 1 T8 Fluorescent Lamp Electronic Ballast PK 10 $71.95 Time Remaining: 7d 13h 7m Buy It Now for only: $71.95 |
 LOT OF 10 TRIAD 2 LAMP ELECTRONIC BALLAST F96T8 $85.00 (1 Bid) Time Remaining: 3d 3m |
 FT40W 2G11 2 Lamp T5 Multi Voltage Electronic Ballast $7.20 Time Remaining: 17d 13h 45m Buy It Now for only: $7.20 |
 Howard Ind E1 32IS 120SC Electronic Ballast for 1 F32T8 F25T12 or FB31T8 Lamp $4.49 Time Remaining: 20d 21h 46m Buy It Now for only: $4.49 |
 BALLAST Electronic for FT 40 lamps Recognizes 120 to 277 voltages $199.00 Time Remaining: 20d 17h 10m Buy It Now for only: $199.00 |
 Philips Advance Centium ICN 4S54 90C 2LS G Electronic Ballast fo T5 lamps $20.00 Time Remaining: 2d 19h 23m Buy It Now for only: $30.00 |
 NEW Electronic Fluorescent Ballast for 3 Light Lamp 32 T8 Fixtures Quantity 10 $64.99 Time Remaining: 23d 13h 36m Buy It Now for only: $64.99 |
 10 NEW Quicktronic 277v T8 3 Lamp Electronic Ballast $39.99 Time Remaining: 8d 1h 19m Buy It Now for only: $39.99 |
 4 Lamp Instant Start T8 Electronic Ballast Universal Voltage $115.00 Time Remaining: 2d 16h 6m Buy It Now for only: $190.00 |
 1 New Hatch Electronic Ballast HL432AIS UV HE W Uses 3 or 4 T8 Lamps 120 277V $18.85 Time Remaining: 29d 19h 41m Buy It Now for only: $18.85 |
 Box of 10 GE432 MVPS N 75382 4 Lamp Electronic Ballast $94.99 Time Remaining: 29d 17h 38m Buy It Now for only: $94.99 |
 Electronic Ballast 2 96 Slimline T8 Lamps $6.95 Time Remaining: 6d 12h 9m Buy It Now for only: $8.95 |
 T8 Electronic Fluorescent Ballast 2 32 120V 2 Lamp $7.10 Time Remaining: 14d 17h 13m Buy It Now for only: $7.10 |
 Fluorescent Lamps Electronic Ballast with Lamp Socket 24W for H Tube Lamp Light $5.79 Time Remaining: 7d 47m Buy It Now for only: $5.79 |
 5 Advance ICF 2S26 M1 BS Electronic Ballast 1 2 Lamp 26W CFL 4 PIN 120 277V $129.99 Time Remaining: 18d 20h 34m Buy It Now for only: $129.99 |
 Electronic Ballasts T8 32W for 2 Fluorescent lamps 20 $90.25 Time Remaining: 6d 12h 10m Buy It Now for only: $99.75 |
 SYLVANIA QTP 2X28T5 UNV DIM TCL 2 Lamp 28T5 Dimming RS Electronic Ballast NEW $35.00 Time Remaining: 14d 23h 9m Buy It Now for only: $35.00 |
 1 New Hatch Electronic Ballast HL254HO PS UV W Uses 1 or 2 Lamps 120 277V $19.45 Time Remaining: 29d 19h 41m Buy It Now for only: $19.45 |
 Electronic Ballasts 2 96 Slimline T8 Lamps Box of 10 $95.95 Time Remaining: 6d 12h 10m Buy It Now for only: $105.95 |
 Fluorescent Lamps Electronic Ballast with Lamp Socket 55W for H Tube Lamp Light $6.59 Time Remaining: 4d 31m Buy It Now for only: $6.59 |
 New Fifthlight FLT 347 2 32WT8 DALI 2 LAMP 347V DIMMABLE ELECTRONIC BALLAST $29.99 Time Remaining: 24d 19h 49m Buy It Now for only: $29.99 |
 Sunpark APF120 3 32IS Instant Start Electronic Ballast for 3 F32T8 F25T8 Lamps $16.99 Time Remaining: 5d 15h 42m Buy It Now for only: $16.99 |
 Electronic Ballasts 2 96 Slimline T8 Lamps 20 Units $181.00 Time Remaining: 6d 12h 11m Buy It Now for only: $199.95 |
 Fluorescent Ballast FC32W 1 Lamp Electronic Circline RS $17.80 Time Remaining: 2d 18h 14m Buy It Now for only: $17.80 |
 ACCUPRO T8 MODEL AP RC 232IP 120 1 INSTANT START ELECTRONIC 2 LAMP LIGHT BALLAST $13.95 Time Remaining: 14d 16h 49m Buy It Now for only: $13.95 |
 Electronic Ballasts 2 96 Slimline T8 Lamps Box of 07 $69.95 Time Remaining: 6d 12h 12m Buy It Now for only: $76.95 |
 Motorola G2 RN T12 1LL 277 Electronic 277V Ballast for 2 F40T12 F30T12 Lamps $8.99 Time Remaining: 20d 21h 34m Buy It Now for only: $8.99 |
 Advance REB 2S26 M1 LS DIM 120V 1 or 2 26W Lamp Dimmable Electronic Ballast 2 $42.49 Time Remaining: 7d 22h 16m Buy It Now for only: $42.49 |
 5 New Hatch Electronic Ballasts HL254HO PS UV W Uses 1 or 2 Lamps 120 277V $36.88 Time Remaining: 29d 19h 41m Buy It Now for only: $36.88 |
 5 Triad 3 or 2 Lamp Electronic Ballasts F40 F32 F28 F25 F17 F16 T8 120V 277V $19.00 Time Remaining: 4d 11h 31m |
 Fluorescent Lamps Electronic Ballast with Lamp Socket 24W Output Hi Q 04522 $5.79 Time Remaining: 24d 3h 9m Buy It Now for only: $5.79 |
 Lot of 10 Sylvania QHE4x32T8 UNV PSX SC B 4 Lamp Electronic Ballast $120.00 Time Remaining: 16d 17h 26m Buy It Now for only: $120.00 |
 4 X UNIVERSAL Triad Electronic Light Ballast 564 L TC P for F20T12 Lamps $0.99 Time Remaining: 5d 2h 23m |
 10 New Hatch Electronic Ballasts HL254HO PS UV W Uses 1 or 2 Lamps 120 277V $58.85 Time Remaining: 29d 19h 41m Buy It Now for only: $58.85 |
 BALLAST Electronic for A40 PBXS L lamps Recognizes 120 to 277 voltages $52.80 Time Remaining: 20d 16h 45m Buy It Now for only: $52.80 |
 NEW Quicktronic 277v T8 3 Lamp Electronic Ballast $4.49 Time Remaining: 5d 14m Buy It Now for only: $4.49 |
 17 X UNIVERSAL Triad Electronic Light Ballast C240SI277RH 000C for FT40W Lamps $0.99 Time Remaining: 5d 2h 23m |
 T8 Electronic Fluorescent Ballast 2 59 277 Volt 2 Lamp $11.37 Time Remaining: 19d 20h 46m Buy It Now for only: $11.37 |
 10 SSB2 277 3 32 IS LH ELECTRONIC BALLAST PHILLIPS 277V FOR 3 F32T8 LAMPS $50.00 Time Remaining: 26d 22h 10m Buy It Now for only: $50.00 |
 lot of 6ADVANCE 2 lamp electronic ballasts advance phillips f32t8 ICN2P32N $21.96 Time Remaining: 5d 11h 2m |
 Electronic Ballasts 2 96 Slimline T8 Lamps 20 Units $199.95 Time Remaining: 22d 18h 23m Buy It Now for only: $199.95 |
 T5 High Bay 4 Lamp Fluorescent With HO Electronic Ballast $94.95 Time Remaining: 1d 15h 26m Buy It Now for only: $94.95 |
Lamp Electronic
Electronic ballast for fluorescent lamps typically can be analyzed as comprising a "front end" and a "back end"
Electronic ballast for fluorescent lamps typically can be analyzed as comprising a "front end" and a "back end". The front end typically includes a rectifier for changing alternating current (AC) mains line voltage to a direct current (DC) busvoltage and a filter circuit for filtering the DC bus voltage. Electronic ballasts also often use a boost circuit for boosting the magnitude of the DC bus voltage. The filter circuit typically comprises a capacitive low-pass filter.
The ballast back end typically includes a switching inverter for converting the DC bus voltage to a high-frequency AC voltage, and a resonant tank circuit having a relatively high output impedance for coupling the high-frequency AC voltage to thelamp electrodes. The ballast back end also typically includes a feedback circuit that monitors the lamp current and generates control signals to control the switching of the inverter so as to maintain a desired lamp current magnitude.
In order to maintain stable lamp operation, typical prior art electronic ballasts filter the DC bus voltage to minimize the amount of bus voltage ripple. This is usually accomplished by providing a bus capacitor having a relatively largecapacitance and hence, a relatively large energy storage capacity. By providing a relatively large bus capacitor, the amount of decay from the rectified peak voltage is minimized from one half-cycle to the next half-cycle. Minimizing the amount ofripple on the DC bus also tends to minimize the current crest factor (CCF) of the lamp current. The CCF is defined as the ratio of the magnitude of the peak lamp current to the magnitude of the root-mean-square (RMS) value of the lamp current.
However, using a relatively large bus capacitor to minimize ripple on the DC bus voltage comes with its disadvantages. The bus capacitor must be fairly large, and is therefore more expensive and consumes more area on a printed circuit board, orthe like, and volume within the ballast. Also, because the bus capacitor is discharging whenever the bus voltage level is above the absolute value of the AC mains voltage, the bus capacitor is recharging during a relatively short duration of each linehalf-cycle centered about the peak of the line voltage. This results in the typical prior art ballast having a tendency to draw a relatively large amount of current during the time that the bus capacitor is charging, as shown in FIG. 1. Consequently,this results in a distorted input current waveform giving rise to unwanted harmonics and undesirable total harmonic distortion (THD) and power factor for the ballast.
One approach to lowering the THD and improving the ballast power factor has been to employ an active power factor correction (APFC) circuit. This approach has resulted in tradeoffs. Using an APFC circuit results in added ballast complexity,more components, greater cost, lower reliability, and possibly increased power consumption. Moreover, the ballast typically uses a relatively large bus capacitor with its attendant disadvantages as noted above.
Prior art patents representative of attempts to provide electronic ballast having improved power factor and THD include U.S. Pat. No. 5,387,847, "Passive Power Factor Ballast Circuit for the Gas Discharge Lamps", issued Feb. 7, 1995 to Wood;U.S. Pat. No. 5,399,944, "Ballast Circuit for Driving Gas Discharge", issued Mar. 21, 1995 to Konopka et al.; U.S. Pat. No. 5,517,086, "Modified Valley Fill High Power Factor Correction Ballast", issued May 14, 1996 to El-Hamamsy et al.; and U.S. Pat. No. 5,994,847, "Electronic Ballast with Lamp Current Valley-Fill Power Factor Correction", issued Nov. 30, 1999.
About the Author
Ningbo Zhengjia Electric Appliance Co., Ltd is a professional R & D manufacturer and exporter of electronic ballast for fluorescent lamps(FL) and Compact Fluorescent Lamps(PL).
For electricians only: I have a problem with a dicroic lamp it´s 12 V.?
The wires on socket always burn, but lamp don´t.
¿ what can it be ?...transformer is not electronic and it only works with a single lamp.
Ealier and cheaper dichroics had thin films on their reflectors that allowed infrared radiation to go through. Now the better ones are UV Block; that is they allow UV up into the ceiling but reflect Infrared down avoiding heating the wiring.
I advise you get 'UV block' and check that it is reflecting infrared.
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