Ballast Cat

Here are Todays Amazing Ballast Cat Deals

US Auctions Australian Auctions Austrian Auctions Belgian Auctions Canadian Auctions French Auctions German Auctions Irish Auctions Italian Auctions Dutch Auctions Spanish Auctions Swiss Auctions GB Auctions

Hatch HL224HO PS UV S Electronic T5 Fluorescent Ballast 1or2 Lamps 24W 120V 277V $14.99 Time Remaining: 9d 4h 29m Buy It Now for only: $14.99 Buy It Now | Add to watch list

Lithonia 6 Metal Halide Downlight w 100 Watt Ballast Cat LP6HN 100M $19.99 Time Remaining: 3h 10m Buy It Now for only: $39.99 Buy It Now | Bid now | Add to watch list

BRAND NEW HOWARD IND RAPID START MAGNETIC BALLAST 120V 60Hz CATM1 22RSC 120 $10.99 Time Remaining: 21h 3m Buy It Now for only: $10.99 Buy It Now | Add to watch list

MagneTek Ballast High Pressure Sodium Lamp 12210 237 C TC 120 277 Volts $5.00 Time Remaining: 6d 2h 14m Buy It Now for only: $5.00 Buy It Now | Add to watch list

New Nippo Electronic Ballast CATNO UKAE 1110 $35.00 Time Remaining: 16d 14h 59m Buy It Now for only: $35.00 Buy It Now | Add to watch list

NEW PHILIPS ADVANCE LED ELECTRONIC DRIVER BALLAST 120 277V CATLEDINTA0024V41FO $80.00 Time Remaining: 9d 44m Buy It Now for only: $80.00 Buy It Now | Add to watch list

10x KTEB 275 1 TP PIC SL 2 Lamp T12 Ballast for 2 F96T12 F72T12 F48T12 bulbs $212.50 Time Remaining: 16d 13h 35m Buy It Now for only: $212.50 Buy It Now | Add to watch list

ADVANCE BALLAST L 220 F FOR 2 15 OR 20 WATT PREHEAT LAMPS 120V 60HZ 72AMPS NEW $14.99 Time Remaining: 10d 17h 6m Buy It Now for only: $14.99 Buy It Now | Add to watch list

New GE Fluorescent Lamp Instant Start Ballast 8G3594W for 2 F96T8 200MA 118V $12.00 Time Remaining: 12d 22h 45m Buy It Now for only: $12.00 Buy It Now | Add to watch list

New Universal Signa sign ballast 1048 16 12345 or 6 RSHO 48 Max 10 mi $79.00 Time Remaining: 16d 14h 31m Buy It Now for only: $79.00 Buy It Now | Add to watch list

3 Downlight Omega Lighting 6 Housing 26W Quad Compact Fluorescent S62H26QPLU $50.00 Time Remaining: 3h 38m Buy It Now for only: $65.00 Buy It Now | Bid now | Add to watch list

Universal Ballast F96 or F72 Lamps 827 TH TC P 277 Volts $5.00 Time Remaining: 6d 2h 9m Buy It Now for only: $5.00 Buy It Now | Add to watch list

GE Single Ballast ASM Luminaire Lamp Ballast 1000 Watt $25.00 Time Remaining: 3d 21h 32m Buy It Now for only: $25.00 Buy It Now | Add to watch list

General Electric Rapid Start Ballast 8G1151 for two F96T12 HO 800 MA Lamps $5.00 Time Remaining: 6d 2h 20m Buy It Now for only: $5.00 Buy It Now | Add to watch list

BRS 70 R 70 WATT NPF HIGH PRESSURE SODUIM BALLAST KIT $23.90 Time Remaining: 3d 13h 55m Buy It Now for only: $23.90 Buy It Now | Add to watch list

ADVANCE TRANSFORMER BALLAST RLQ 120 TP S31C $10.00 Time Remaining: 28d 18h 35m Buy It Now for only: $10.00 Buy It Now | Add to watch list

Robertson Ballast HP1527P 277 Volt Lot of 10 $99.95 Time Remaining: 24d 4h 12m Buy It Now for only: $99.95 Buy It Now | Add to watch list

Universal Trigger Start Ballast 120 60 546 B TC P $6.95 Time Remaining: 16d 3h 30m Buy It Now for only: $6.95 Buy It Now | Add to watch list

VALMONT RAPID START BALLAST 8G1141W CLASS P FOR LAMPS 120V 60 HZ 21A $14.90 Time Remaining: 4d 18h 3m Buy It Now for only: $14.90 Buy It Now | Add to watch list

Downlight Omega Lighting 6 Housing 26W Quad Compact Fluorescent S62H26QPLU $20.00 Time Remaining: 4h 25m Buy It Now for only: $30.00 Buy It Now | Bid now | Add to watch list

New Universal Signa sign ballast 256 448 800 432 or 1 T12 RSHO $81.00 Time Remaining: 16d 14h 31m Buy It Now for only: $81.00 Buy It Now | Add to watch list

Lots of 10 Fluorescent T 12 Ballasts ADVANCE Lighting $29.99 Time Remaining: 23d 11h 56m Buy It Now for only: $29.99 Buy It Now | Add to watch list

New France sign ballast Cat 3128DR for 3 T12 HO Lamps 26 to 36 $81.00 Time Remaining: 23d 11h 37m Buy It Now for only: $81.00 Buy It Now | Add to watch list

NEW EBW ELECTRONICS BALLAST CAT E 1MB NNM 1 07 $6.99 Time Remaining: 22d 15h 16m Buy It Now for only: $6.99 Buy It Now | Add to watch list

Powerlighting Rapid Start Dimming Ballast 8G5007W $120.00 Time Remaining: 13d 18h 6m Buy It Now for only: $120.00 Buy It Now | Add to watch list

NEW MAGNETEK 11210 506 C TC 11210506CTC 70W Metal Halide Ballast 1002971 $40.00 Time Remaining: 12d 22h 50m Buy It Now for only: $40.00 Buy It Now | Add to watch list

ADVANCE BALLAST NO REL 2P32 RH TP $9.99 Time Remaining: 25d 19h 51m Buy It Now for only: $9.99 Buy It Now | Add to watch list

METAL HALIDE BALLAST KIT $29.99 Time Remaining: 4d 20h 13m Buy It Now for only: $29.99 Buy It Now | Add to watch list

Electronic ballasts t 8 pro line GE 120 277volt $69.99 (1 Bid) Time Remaining: 1d 33m Bid now | Add to watch list

NEW ADVANCE CENTIUM ICN 4P32 N 3 OR 4 LAMP BALLAST FREE SHIPPING USA $22.48 Time Remaining: 11h 59m Buy It Now for only: $22.48 Buy It Now | Add to watch list

Advance Mark V Electronic Integrated Circuit Ballast $11.54 Time Remaining: 6d 18h 48m Buy It Now for only: $11.54 Buy It Now | Add to watch list

FLUORESCENT LAMP BALLAST CAT NO234 281 118 VOLTS 40 WATTS $11.65 Time Remaining: 13d 4h 38m Buy It Now for only: $11.65 Buy It Now | Add to watch list

Advance RQM 2S40 3 TP Ballast Class P for 2x 40W Rapid Start Lamps $9.99 Time Remaining: 26d 1h 42m Buy It Now for only: $9.99 Buy It Now | Add to watch list

LITHONIA LIGHTING HIGH BAY T8 LAMP STYLE LOW PROFILE 3 LAMP 32 WATT MULTI VOLT B $68.59 Time Remaining: 28d 18h 18m Buy It Now for only: $68.59 Buy It Now | Add to watch list

NEW E conolight E BLM17Q 175W Metal Halide Ballast Kit $29.99 Time Remaining: 17d 17m Buy It Now for only: $29.99 Buy It Now | Add to watch list

Universal Rapid Start Ballast for two F40w T12 RS Lamps Cat No 443 L TC P $5.00 Time Remaining: 6d 2h 31m Buy It Now for only: $5.00 Buy It Now | Add to watch list

GROUND BALLAST CAT 413 C TC P 65 AMPS CLASS P TYPE 1 $10.00 Time Remaining: 17d 12h 38m Buy It Now for only: $10.00 Buy It Now | Add to watch list

NEW GE 400 WATT HIGH INTENSITY DISCHARGE LAMP BALLAST 16G3009W $0.99 (1 Bid) Time Remaining: 1d 21h 53m Bid now | Add to watch list

Advance Ballast R 1BP40 TP 120 Volts $20.00 Time Remaining: 19d 18h 19m Buy It Now for only: $20.00 Buy It Now | Add to watch list

Therm o matic universal ballast 1 8 bulb F96 F72 $9.99 Time Remaining: 17d 13h 4m Buy It Now for only: $9.99 Buy It Now | Add to watch list

Advance 277 Volt 2 Lamp Ballast V 140 2 TP 277v 185a $8.50 Time Remaining: 21d 15h 48m Buy It Now for only: $8.50 Buy It Now | Add to watch list

NEW ADVANCE CENTIUM ICN 4P32 N 3 OR 4 LAMP BALLAST FREE SHIPPING USA $22.88 Time Remaining: 14d 11h 43m Buy It Now for only: $22.88 Buy It Now | Add to watch list

UNIVERSAL RAPID START BALLAST 960 VLH TC P $20.00 Time Remaining: 8d 19h 2m Buy It Now for only: $20.00 Buy It Now | Add to watch list

GE FILTRGARD H2407L LIGHT BALLAST ASM 70W HPS 277V NIB $50.00 Time Remaining: 15d 19h 53m Buy It Now for only: $50.00 Buy It Now | Add to watch list

Robertson Ballast HP2627P 306260010 1 CFQ26W G24d CFS28W GR8 Lot of 4 277V $47.95 Time Remaining: 9d 51m Buy It Now for only: $47.95 Buy It Now | Add to watch list

Rig A Lite 2 Lamp XP Explosion Proof Fluorescent Lighting Hazardous $650.00 Time Remaining: 18d 20h 41m Buy It Now for only: $650.00 Buy It Now | Add to watch list

Phillips advance ICN 2P32 N $9.99 Time Remaining: 2d 20h 23m Bid now | Add to watch list

TRIAD ELECTRIC BALLAST CATC3405 120RH 120 VOLT NIB $9.99 Time Remaining: 14d 19h 3m Buy It Now for only: $9.99 Buy It Now | Add to watch list

1 new KTEB 275 1 TP PIC SL CrossRef ICN 2P60 SC REL 2P60 S A for 1 2 F96T12 $23.75 Time Remaining: 16d 4m Buy It Now for only: $23.75 Buy It Now | Add to watch list

ADVANCE TRANSFORMER CO BALLAST RS 110 TP $35.00 Time Remaining: 20d 19h 6m Buy It Now for only: $35.00 Buy It Now | Add to watch list

ROBERTSON HP 2627 BALLAST 277V 60HZ 100 $7.00 Time Remaining: 15d 18h 30m Buy It Now for only: $7.00 Buy It Now | Add to watch list

Magnetek Triad 277 Volt 2 Lamp Ballast B259I277RH New $4.87 Time Remaining: 22d 15h 2m Buy It Now for only: $4.87 Buy It Now | Add to watch list

KEYSTONE BALLAST CAT NO M180PFP LISTED 882 B 120V 60H $9.50 Time Remaining: 24d 15h 27m Buy It Now for only: $9.50 Buy It Now | Add to watch list

ADVANCE 71A6742 METAL HALIDE BALLAST 1500 WATT 480 VOLT CLASS N $59.99 Time Remaining: 29d 14h 22m Buy It Now for only: $59.99 Buy It Now | Add to watch list

T5 BALLAST 2X28 WATT SYLVANIA $4.79 Time Remaining: 4d 1h 21m Buy It Now for only: $4.79 Buy It Now | Add to watch list

trigger start ballast CAT 6G3083 220 VOLT 50HZ 39 AMPS $4.99 Time Remaining: 2d 11h 30m Buy It Now for only: $17.00 Buy It Now | Bid now | Add to watch list

MAGNETEK UNIVERSAL BALLAST KIT CAT12310 90 500K NIB $19.99 Time Remaining: 10d 17h 59m Buy It Now for only: $19.99 Buy It Now | Add to watch list

BRAND NEW PHILIPS ADVANCE 2 LAMP FLUORESCENT 120V BALLAST CATRC 2S85 TP $22.99 Time Remaining: 13d 18h 57m Buy It Now for only: $22.99 Buy It Now | Add to watch list

Sylvania Quicktronic Electronic Ballast QTP4x32T8 120 277v $33.00 Time Remaining: 13d 18h 4m Buy It Now for only: $33.00 Buy It Now | Add to watch list

1 New 20 005 Atlas Electronic Ballast 120 277V Cat No EB454UP Uses 3 or 4 Lam $23.85 Time Remaining: 11d 20h 5m Buy It Now for only: $23.85 Buy It Now | Add to watch list

Qty 39 Ballasts Day brite hb25hsmt S16UP Lamp Fixtures $2,499.99 Time Remaining: 16d 7m Buy It Now for only: $2,499.99 Buy It Now | Add to watch list

RAPID LITE FLUORESCENT VANDAL PROOF LIGHTING FIXTURE $50.00 Time Remaining: 16d 16h 58m Buy It Now for only: $50.00 Buy It Now | Add to watch list

GROUND BALLAST CAT RL 140 TP 65 AMPS CLASS P TYPE 1 $10.00 Time Remaining: 17d 12h 37m Buy It Now for only: $10.00 Buy It Now | Add to watch list

Advance F20T12 Trigger Start Ballast 120 60 RL 2SP20 TP $19.95 Time Remaining: 16d 3h 26m Buy It Now for only: $19.95 Buy It Now | Add to watch list

LOT OF LIGHTOLIER RECESSED COMPACT FLORESCENT DOWNLIGHTS WITH TRIMS $99.00 (1 Bid) Time Remaining: 3d 18h 12m Bid now | Add to watch list

ADVANCE BALLAST CAT NO H1Q26 TP 120V 60HZ $9.50 Time Remaining: 24d 15h 29m Buy It Now for only: $9.50 Buy It Now | Add to watch list

New KTEB 332 UV IS N P 3 Lamp T8 Ballast for 3 F32T8 Bulbs CrossRef B332 GE 332 $18.95 Time Remaining: 13d 19h 17m Buy It Now for only: $18.95 Buy It Now | Add to watch list

MAGNETEK 446 L SLH TC P FLUORESCENT LAMP BALLAST $6.99 Time Remaining: 15d 21h 26m Buy It Now for only: $6.99 Buy It Now | Add to watch list

POWER LIGHTING INSTANT START BALLAST 8G1764W BONUS LINE $15.00 Time Remaining: 8d 18h 57m Buy It Now for only: $15.00 Buy It Now | Add to watch list

Advance F20T12 Preheat Ballast 120 60 RLQ120TP $13.95 Time Remaining: 16d 3h 26m Buy It Now for only: $13.95 Buy It Now | Add to watch list

Advance Ballast 277v for two 150W 96 or 85W 72 Rapid Start VS 2S110 2 TP $5.00 Time Remaining: 6d 1h 33m Buy It Now for only: $5.00 Buy It Now | Add to watch list

Advance Ballast 277v for two 150W 96 or 85W 72 Rapid Start VS 2S110 2 TP $5.00 Time Remaining: 6d 1h 39m Buy It Now for only: $5.00 Buy It Now | Add to watch list

Universal Rapid Start Ballast 443 L TC P 277 Volts $9.00 Time Remaining: 10d 4h 4m Buy It Now for only: $9.00 Buy It Now | Add to watch list

10 4 lamp T8 triad universal electronic ballasts $85.00 (1 Bid) Time Remaining: 5d 1h 8m Bid now | Add to watch list

Valmont Electric Trigger Start Ballast Cat 8G3560 $9.00 Time Remaining: 21d 20h 8m Buy It Now for only: $9.00 Buy It Now | Add to watch list

GE General Electric Ballast Rapid Start 8G1063W to use w F40WT121 Lamp $20.00 Time Remaining: 20d 17h 9m Buy It Now for only: $20.00 Buy It Now | Add to watch list

Phoenix LFVR7340R 277ES Fluorescent Hazardous Location Light paint booth lite $340.00 Time Remaining: 28d 21h 20m Buy It Now for only: $340.00 Buy It Now | Add to watch list

2 ADVANCE 277VAC FLOURESCENT BALLASTS VEL 2P59 S RH TP $12.99 Time Remaining: 1h 29m Buy It Now for only: $12.99 Buy It Now | Add to watch list

KTEB 432 UV IS N P 4 Lamp T8 Ballast for 4 F32T8 F25T8 F17T8 3 F40T8 Bulbs $16.95 Time Remaining: 27d 2h 36m Buy It Now for only: $16.95 Buy It Now | Add to watch list

Day Brite Lighting 1TG232 21 277 $14.95 Time Remaining: 8d 22h 15m Buy It Now for only: $14.95 Buy It Now | Add to watch list

BRAND NEW QUICKTRONIC METAL HALIDE BALLAST 120 277V 60Hz CATQTP1X70MH UNV SQ $99.99 Time Remaining: 20h 44m Buy It Now for only: $99.99 Buy It Now | Add to watch list

MAGNETEK RAPID START BALLAST CAT412 L SLH TC P NEW $15.00 Time Remaining: 24d 20h 16m Buy It Now for only: $15.00 Buy It Now | Add to watch list

Robertson Transformer Company BallastCatNo HPS1RC $1.39 Time Remaining: 6d 17h 6m Buy It Now for only: $3.99 Buy It Now | Bid now | Add to watch list

Advance Transformer R1P32 TP Rapid Start Ballast LOT 10 $75.00 Time Remaining: 18d 5h 18m Buy It Now for only: $75.00 Buy It Now | Add to watch list

MAGNETEK HPF 2 BULB 8 BALLAST CAT 806 A TC P $35.00 Time Remaining: 10d 19h 38m Buy It Now for only: $35.00 Buy It Now | Add to watch list

7 Valmont Ultra Miser E132PI120G01 Ballasts F32T8 F28T8 F25T8 F17T8 F40T8 F25T12 $65.00 Time Remaining: 14d 17h 35m Buy It Now for only: $65.00 Buy It Now | Add to watch list

10x KTEB 232 UV IS N P Keystone 2 Lamp T8 Ballast for 2 F32T8 F25T8 F17T8 Bulbs $124.95 Time Remaining: 28d 16h 18m Buy It Now for only: $124.95 Buy It Now | Add to watch list

Advance High Pressu Ballast 250W 480V 60Hz Cat 71A8241 $48.00 Time Remaining: 27d 20h 4m Buy It Now for only: $48.00 Buy It Now | Add to watch list

BRAND NEW ADVANCE INSTANT START BALLAST 120V 60Hz CATSM 2E57 S TP PC $64.99 Time Remaining: 5d 22h Buy It Now for only: $64.99 Buy It Now | Add to watch list

BRAND NEW HOWARD INDUSTRIES BALLAST KIT 480V 60Hz CATM0400 11C 211 K $49.99 Time Remaining: 14d 23h 56m Buy It Now for only: $49.99 Buy It Now | Add to watch list

BRAND NEW ADVANCE METAL HALIDE LAMP BALLAST 120 277V 250W CAT72C5782 NP $79.99 Time Remaining: 14d 22h 21m Buy It Now for only: $79.99 Buy It Now | Add to watch list

Robertson Transformer Company BallastCatNo HPNS1P $1.39 Time Remaining: 6d 17h 7m Buy It Now for only: $3.99 Buy It Now | Bid now | Add to watch list

Advance Rapid Start 1 F40 T12 Ballast R140TP Mark III Energy Saver 120V $10.00 Time Remaining: 2d 19h 47m Buy It Now for only: $10.00 Buy It Now | Add to watch list

NEW Lithonia 1000 watt metal halide sports light TF1000MRA3TB $325.00 Time Remaining: 16d 23h 7m Buy It Now for only: $325.00 Buy It Now | Add to watch list

Advance Instant Start Electronic Ballast REL 2P32 SC NNB $14.00 Time Remaining: 13d 18h 22m Buy It Now for only: $14.00 Buy It Now | Add to watch list

NEW T5 DIMMING BALLAST LUTRON H3DT528CUNV110 HI LUME 3D $99.00 Time Remaining: 22d 16h 28m Buy It Now for only: $99.00 Buy It Now | Add to watch list

BRAND NEW SYLVANIA BALLAST KIT CATLU400 SUPER5 KIT $79.99 Time Remaining: 6d 21h 36m Buy It Now for only: $79.99 Buy It Now | Add to watch list

Magnetek 1130 57 500K 1000W 480VAC 60Hz Magnetic Halide $60.00 Time Remaining: 3d 21h 30m Buy It Now for only: $60.00 Buy It Now | Add to watch list

Advance Rapid Start Electronic Ballast REL 2S110 120v 60hz $45.00 Time Remaining: 13d 17h 59m Buy It Now for only: $45.00 Buy It Now | Add to watch list

BRAND NEW ADVANCE RAPID START ELECT BALLAST 120V 60Hz CATRCF 2S26 M1 BS QS $49.99 Time Remaining: 20h 28m Buy It Now for only: $49.99 Buy It Now | Add to watch list

More Great Information on Ballast Cat:

Electronic Ballast Having A Flyback Cat-Ear Power Supply by ballast123

This application is a continuation of co-pending, commonly-assigned U.S. patent application Ser. No. 11/483,374, filed Jul. 7, 2006, entitled ELECTRONIC BALLAST HAVING A FLYBACK CAT-EAR POWER SUPPLY, the entire disclosure of which is hereby incorporated by reference.

Electronic Ballasts for fluorescent lamps typically include 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) bus voltage and a filter circuit for filtering the DC bus voltage. 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 the lamp electrodes.

The front end of electronic ballasts also often include a boost converter, which is an active circuit for boosting the magnitude of the DC bus voltage above peak of line voltage, and for improving the total harmonic distortion (THD) and power factor of the input current to the ballast. However, boost converters typically include integrated circuits (IC) and semiconductor switches, such as field effect transistors (FETs). In order to handle the amount of current required to drive the lamp at high end (i.e. at or near 100% light intensity), the components of such a boost converter are typically large and costly.

The ballast 100 includes an electromagnetic interference (EMI) filter 115 and a rectifier 120 both capable of being connected to an AC power supply such as a typical 120V, 60 Hz AC main. The EMI filter 115 isolates high-frequency noise generated by the ballast circuitry from the AC power supply. The rectifier 120 converts the AC input voltage to a rectified pulsating DC voltage 210, which has a maximum value of VPEAK (shown as 230 in FIG. 2a). For example, if the AC input voltage has an RMS (root mean square) value of 277V, the value of VPEAK will be approximately 392V. The rectifier 120 is connected to a valley-fill circuit 130 through a diode 140. A high-frequency filter capacitor 150 is connected across the inputs to the valley-fill circuit 130. The valley-fill circuit 130 selectively charges and discharges an energy-storage device, such as one or more capacitors, so as to fill the "valleys" between successive rectified voltage peaks to produce a substantially DC bus voltage 220. The DC bus voltage is the greater of either the rectified voltage, or the voltage across the energy storage device in the valley-fill circuit 130.

According to an embodiment of the present invention, an electronic ballast, which draws an input current from an AC power supply and drives a gas discharge lamp, comprises: (1) a rectifier for rectifying an AC input voltage from said AC power supply to produce a rectified voltage; (2) a filter circuit for converting said rectified voltage to a filtered bus voltage; (3) an inverter for converting said bus voltage to a high-frequency AC drive voltage to drive said lamp; (4) a control circuit coupled to the inverter for controlling the operation of said inverter; and (5) a ballast power supply that receives said rectified voltage and generates a substantially DC voltage for powering said control circuit. The ballast power supply selectively draws current from said AC power supply when said rectified voltage is lower than a predetermined value such that said input current to said ballast is essentially sinusoidal. The ballast power supply is coupled to said inverter and is operable to provide current to said inverter when the magnitude of said rectified voltage is less than said predetermined level.

According to another embodiment of the present invention, an electronic ballast for driving a gas discharge lamp comprises a rectifier, an inverter, a first circuit coupled from the rectifier to the inverter, and a second coupled from the rectifier to the inverter in parallel electrical connection with the first circuit. The rectifier rectifies the AC input voltage from said AC power supply to produce a rectified voltage, while the inverter generates a high-frequency AC drive voltage to drive said lamp. The first circuit supplies current from said AC power supply to said inverter and provides said rectified voltage to said inverter when the magnitude of said rectified voltage is greater than a predetermined value. The second circuit supplies current to said inverter and provides a boosted voltage to said inverter when the magnitude of said rectified voltage is less than said predetermined value. The magnitude of said boosted voltage is greater than the magnitude of said rectified voltage when the magnitude of said rectified voltage is less than said predetermined value.

According to another aspect of the present invention, an electronic ballast for driving a gas discharge lamp comprises a rectifier for rectifying an AC line voltage to produce a rectified voltage, and a boost converter for receiving said rectified voltage and producing a substantially DC output voltage having an average magnitude less than a peak value of said rectified voltage.

A cat-ear circuit for an electronic ballast having a front end for receiving an AC input voltage and a back end for driving a gas discharge lamp is also described herein. The cat-ear circuit comprises an input for receipt of a rectified voltage, a semiconductor switch, a transformer, a control circuit, and first and second outputs. The semiconductor switch is coupled in series electrical connection between said input and a circuit common and has a conductive state and a non-conductive state. The transformer has a primary winding and a secondary winding, where said primary winding coupled in series electrical connection with said semiconductor switch. The control circuit is operable to receive said rectified voltage and to repeatedly switch said semiconductor switch at a high frequency between said conductive state and said non-conductive state only when said rectified voltage is below a predetermined level, such that a boosted voltage is produced across said secondary winding of said transformer. The first output for provides said boosted voltage to said ballast back end only when said rectified voltage is below said predetermined level, and the second output provides a substantially low-magnitude DC voltage.

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).

Article Source: http://www.earticlesonline.com/Article/Electronic-Ballast-Having-A-Flyback-Cat-Ear-Power-Supply/1036945