Todays deals on High Efficiency?

75 HP Toshiba High Efficiency Induction Motors $1,750.00

40 HP. U.S. Vert. Motor Prem. Efficiency High Thrust Frame 324 TP WPI Item #8405 $1,750.00

40 HP MOTOR 324T 1800 RPM HIGH EFFICIENCY MARINE DUTY $1,299.00

2500PCS LINEAR LT1372 High Efficiency Boost, Buck, Fly Back 1.5A Regulator $990.00

Toshiba EPACT High Efficiency 3 Phase Induction Motor $900.00

15 HP Severe duty 460 volt high efficiency motor $900.00

BALDOR HIGH EFFICIENCY 3 PHASE MOTOR AEM3689-4 NEW $750.00

Kingmotor LR36807 High Efficiency Severe Duty Motor 7.5 HP 1760 RPM $764.24

Marathon Electrical 7.5 HP High Efficiency Motor $750.00

***WNM High Efficiency Three Phase Motor 7.5HP *** $700.00

7.5 HP Baldor wash down high efficiency motor $650.00

UNIMOUNT 125 ENCLOSED HIGH EFFICIENCY MOTOR HP5 1745RPM $600.00

LOT OF 1000 LB6930 ROHM Seven-Segment Numeric LED Display High-Efficiency +1.8. $595.00

Lafert HE90LE4 High Efficiency Motor 84% 2HP 1800RPM (4 POLE) $425.00

US MOTORS UNIMOUNT 125 HIGH EFFICIENCY MOTOR F008A .5HP 1740RPM NEW F008A $425.00

US MOTORS UNIMOUNT 125 HIGH EFFICIENCY MOTOR F008B .5HP 1745RPM NEW F008B $425.00

5 HP 3 Phase Electric Motor, 1750 RPM, ODP, High Efficiency 89.5%, 4GZA4 {CH3} $399.00

10 hp 3 phase motor 215T Marathon Severe Duty High Efficiency $395.00

BROOK HANSEN Electric Motor High Efficiency 7.5 Hp 230/460v 1750 RPM W-DA132SJ-D $250.00

DELCO HIGH EFFICIENCY 3 PHASE AC MOTOR 1G1154C2 NIB $285.00

5000 PC’S P/N TLHO4200 High Efficiency LED SOFT ORANGE $299.99

NEW Lincoln 3hp High Efficiency 1170rpm Motor 460v DI $299.88

B3/48FLF2AMO3 3-PHASE HIGH EFFICIENCY INDUCTION TOSHIBA MOTOR W/ SIDE SHAFT $250.00

WEG 00518OP3H184T 5HP 575V 3PH MOTOR HIGH EFFICIENCY 1750RPM $250.00

Toshiba High Efficiency 1-1/2HP M/N BY154FLC2AOZ $225.00

BALDOR HIGH EFFICIENCY 3 PHASE MOTOR AEM3683-4 NIB $199.95

LOT 4500 NEW HIGH-EFFICIENCY LEDS LED $202.49

Baldor, High Efficiency Electric Motor $150.00

Toshiba High Efficiency 1-1/2HP M/N BY154FLF2AOZ $200.00

2000 PCS HER108 DO-41 1.0A HIGH EFFICIENCY RECTIFIER /FREE Registered Mail $198.99

US Motors 2 HP Hostile Duty High Efficiency Motor NEW $158.09

Marathon 1.5 HP Series-E High Efficiency 3 phase Motor 9QC145TTDR4128AB P $169.99

Marathon 2.0 HP Series-E High Efficiency 3 phase Motor 8VJ145TTDR5631BD P $169.99

Siemens 2HP 3-Phase High Efficiency TEFC Motor 1LA01452FP21 RGZP NIB $152.99

Hub City Poweratio High Efficiency Helical In-Line Drive 15.39:1 Ratio H12032E $148.74

WEG 1HP 3-Phase High Efficiency AC Motor BL-1-143T $127.49

JAN-FAN JF-110V-HEM HIGH EFFICIENCY MOTOR 1/4 HP**NIB** $109.00

Toshiba High Efficiency Motor 1hp 3 Phase 1730rpm $64.00

50pc New OZ9936GN High Efficiency Inverter Controller $99.00

CABUR XCSF5 High Efficiency Power Supply $80.00

Cabur XCSF3 High Efficiency Power Supply **XLNT** $95.00

US MOTORS UNIMOUNT 125 HIGH EFFICIENCY MOTOR F008B .5HP 1745RPM F008B $94.95

US Electrical Motor High Efficiency F012B, .75 HP, 1750 RPM $94.95

Enhance SA-2502 250W High Efficiency Switching Power Supply $94.65

1000 PC’S P/N TLHO4200 High Efficiency LED SOFT ORANGE $69.99

50x OZ9938GN High Efficiency Inverter Controller NEW m $67.30

50P OZ9938GN OZ9938 High Efficiency Inverter Controller $67.25

50P OZ9938GN OZ9938 High Efficiency Inverter Controller $67.25

50P OZ9938GN OZ9938 High Efficiency Inverter Controller $67.25

50P OZ9938GN OZ9938 High Efficiency Inverter Controller $67.25

SY-2KVAU Shin Young Step Up Transformer Power Saver 220 – 110 High Efficiency $49.99

50pcs,OZ9938GN High Efficiency Inverter Controller NEW $66.99

100PCS Linear LT1372 High Efficiency Boost, Buck, Fly Back 1.5A Regulator $59.00

Intersil ISL8011EVAL1Z ISL8011 High Efficiency Buck Reg $50.00

M/A COM 10-600MHz High Efficiency Amp, SMA67-1, New $54.99

DC DC Converter Regulator 12V Step Up to 24V 200W small size high efficiency $42.99

250x HER308 High Efficiency Rectifier Diode Ultra Fast Recovery 3A 50-1kV DO-201 $38.50

SHOPVAC – 9067200 – High Efficiency Collection Filter Bags – 2 Item Bundle – Fil $32.92

DRV591VFP {DRV591} HIGH-EFFICIENCY PWM POWER DRIVER IC $26.88

5PC LT1370 High Efficiency Switching Regulator,K7 $29.99

LOT OF 340 PC’S LED Module P/N TASG4900 high efficiency $19.99

20P OZ9938GN OZ9938 High Efficiency Inverter Controller $26.99

20P OZ9938GN OZ9938 High Efficiency Inverter Controller $26.99

20P OZ9938GN OZ9938 High Efficiency Inverter Controller $26.99

20pcs,OZ9938GN High Efficiency Inverter Controller NEW $26.90

20P OZ9938GN OZ9938 High Efficiency Inverter Controller $25.99

SHOPVAC – 9067100 – High Efficiency Collection Filter Bags – 2 Item Bundle – Fil $25.80

DIALIGHT GREEN LED BI-LEVEL HIGH EFFICIENCY $10.00

K3478 Manu:MITSUBIS Encapsulation:RF TRANSISTOR,High Efficiency Low-Side $21.00

20 AIC1578CS High-Efficiency Step-Down DC/DC Converter $23.00

uQTY 250: EPA018A-70 HIGH EFFICIENCY HETEROJUNCTION POWER FET U39A $3.99

STA326 2.1 STMICROELECTRONICS HIGH EFFICIENCY DIGITAL AUDIO SYSTEM 2-CH $18.50

10pc New OZ9936GN High Efficiency Inverter Controller $20.99

National LH1605K 5A High Efficiency Switching Regulator $19.99

3 Amp 200V High Efficiency Rectifier Diode, HER303, x50 $19.99

16-40V to 1.0-12V 6A DC-DC Buck Step-Down Converter Module High Efficiency $19.60

DC-DC Buck Step-Down Converter Module 16-40V to 1.0-12V 6A High Efficiency $19.60

uQTY 20: EPA040A-70 HIGH EFFICIENCY HETEROJUNCTION POWER FET U39C $0.99

MAX5033 MAX5033BASA 500mA, 76V, High-Efficiency, MAXPow $14.95

MAX1675 MAX1675EUA High-Efficiency, Low-Supply-Current, $14.95

10x OZ9938GN High Efficiency Inverter Controller NEW m $18.85

70W High Efficiency Power Amplifier IC TDA1562 TDA1562SD ( NEW ) $13.50

10P OZ9938GN OZ9938 High Efficiency Inverter Controller $17.99

10P OZ9938GN OZ9938 High Efficiency Inverter Controller $17.99

10P OZ9938GN OZ9938 High Efficiency Inverter Controller $17.99

10pcs,OZ9938GN High Efficiency Inverter Controller NEW $17.98

MAX5035 MAX5035DUSA 1A, 76V, High-Efficiency MAXPower S $13.95

MAX5033 MAX5033DASA 500mA, 76V, High-Efficiency, MAXPow $13.95

10P OZ9938GN OZ9938 High Efficiency Inverter Controller $17.33

MAX5035 MAX5035DASA 1A, 76V, High-Efficiency MAXPower S $12.95

High Efficiency Step-Down Switching Regulators IC LTC1436 / LTC1436ACGN ( NEW ) $11.50

High Efficiency DC-DC Converter 3V boost 5V 1A USB Charger to MP3/MP4 Phone.5pcs $15.99

High Efficiency Switching Regulators IC LT1070CK ( NEW ) $10.80

UC3836N UC3836 High Efficiency Regulator Controller IC $10.22

2PC LT1370 High Efficiency Switching Regulator,K7 $14.99

70W High Efficiency Power Amplifier IC TDA1562 TDA1562Q $9.90

HIGH EFFICIENCY ELECTRONIC VOLUME IC TC9177 / TC9177P ( NEW ) $9.80

STA32613TR – STA32613 2.1 HIGH EFFICIENCY DIGITAL AUDIO SYSTEM IC $9.12

MAX756 MAX756CSA 3.3V/5V, High-Efficiency, Step-Up DC-D $9.95

MAX8588 MAX8588ETM High-Efficiency, Low-IQ PMIC with D $9.95

High Efficiency Questions

A Better Mousetrap: High-Efficiency Halogen Lamps Are A Superior Energy-Efficient Lighting Solution For Existing Recessed Downlights

For many homeowners, especially those with children, the kitchen is the most lived-in room in the house. It’s a gathering place, a workspace, a study area, an entertainment venue and of course, a room in which to enjoy meals together. Thus, it’s not uncommon for kitchen lights to be switched on for four or more hours per day. This presents a legitimate opportunity to save money and reduce air pollution and landfill waste by switching to energy-efficient lighting solutions.

As a source of both ambient and task light, recessed downlights (“cans”) are widely used in American kitchens. These fixtures push light down and away to light an area and a work surface at the same time. To enable the homeowner to add ambience, they’re often controlled by a dimmer switch.

For homeowners motivated to make a small investment to reduce their electricity use and/or carbon footprint, a simple light bulb retrofit in their existing kitchen fixtures is a smart and easy strategy. Simply remove the existing high wattage (commonly 65-90 watts) bulbs, and insert lower wattage eco-friendly lamps which yield equivalent light output (lumens). But since there are two types of lower cost energy-efficient lighting options from which to choose, which is preferable in this application?

High-Efficiency Halogen Lamps Beat Compact Fluorescent Lamps

We’ve looked at this question from many angles and have concluded that screw-in (self-ballasted) CFL reflector lamps, for many the obvious choice, are an inferior, energy-efficient lighting solution. Very few consumers are familiar with the new high-efficiency halogen lamps (“HEH”) which have hit the market in the last few years. The best of these models already exceed the energy efficiency requirements for incandescent reflector lamps scheduled to take effect in July 2012.

Here, we cite nine reasons why we believe high-efficiency halogen lamps, controlled by a pre-set dimmer switch, offer overall superior, energy-efficient lighting value to CFLs starting with the most important factor for electric light sources, whether energy efficient or not: light characteristics.

Reason 1 – Great Light:

• Halogen light is legendary for being white, bright, crisp, and punchy and making colors appear vivid.
• The light cast by CFL reflectors, while typically warm white, is average at best.

Reason 2 – Superior Illuminance:

• “Illuminance” describes the amount of light on a horizontal surface, measured in “foot candles.”
• High-efficiency halogen lamps, especially those with a PAR (Parabolic Aluminized Reflector) configuration, throw concentrated light downwards measurably better than CFL reflectors.
• The result? Much more artificial light where it’s needed.

Reason 3 – Effortless Dimming:

• No artificial light source dims better than an incandescent lamp. High-efficiency halogen lamps use improved incandescent technology and don’t require special dimmer switches.
• Dimmable CFLs cost more than non-dimmable versions. But dimmable doesn’t translate into impressive dimming performance.

Reason 4 – Dimming = Longer Lamp Life:

• Dimming any lamp is an energy-efficient lighting strategy because it reduces electricity consumption and harmful gas emissions. There’s an added green benefit when dimming high-efficiency halogen lamps: it extends the lifetime of the lamp.
• For example, constant dimming by just 15% (a pre-set dimmer enables this) will triple the life of the bulb, thereby reducing landfill waste and replacement costs.
• For premium high-efficiency halogen lamps, this translates into 9,000 to 12,000 hours, roughly the same as the average rated life of an Energy Star rated CFL reflector (whose projected life is static even if dimmed).

Reason 5 – Instant On:

• Just like non-halogen incandescent bulbs, halogen lamps reach full brightness with the flick of a switch.
• State-of-the-art CFL reflectors will start instantly but take 30 seconds to a minute’s time to reach full brightness (depending on the ambient room temperature).

Reason 6 – Mercury-Free:

• High-efficiency halogen lamps operate without the use of mercury.
• All CFLs contain mercury which must be vaporized to create ultraviolet energy and subsequently, visible light.
• Since mercury is a toxic substance, this necessitates proper recycling at the end of a CFL’s life.
• Further, while breakage in a recessed can is a low probability risk, an accident would cause mercury to contaminate the area below.

Reason 7 – Reliability:

• High-efficiency halogen lamps don’t contain any electronic components.
• Unlike a screw-in CFL, which contains a precise electronic component called a ballast, neither frequent on/off switching, nor trapped heat will affect the performance or lifespan of these energy-efficient lighting solutions.

Reason 8 – Lumen Maintenance:

• Lumens are the measure of the amount of light emitted by a light source. High-efficiency halogen lamps maintain their initial lumens for as long as they operate.
• CFLs, using different technology, will gradually dim by about 25% over their lifetime.
• Why does this matter? Studies have shown that at age 65, the eyes need three times more light to see as well as at age 20.
• With CFLs in a kitchen, vision needs and light output are moving in opposite directions as time passes.

The Rest of the Story – High-Efficiency Halogen Lamps Are Greener

Reason 9 – Better, REAL Energy-Efficient Lighting:

• The commonly used metric for comparing energy-efficient lighting is lumens of output per watt of electrical input. This method is appropriate for omni-directional bulbs such as traditional A-shape lamps and spiral CFLs.
• Directional lamps (floodlights, spotlights) are different. Their job is not to glow, but to throw light into a defined area or onto a specific surface.
• Compare the measured light (illuminance) on a horizontal surface from two floodlights, a 16 watt CFL BR30 (630 lumens) and a 34 watt HEH PAR30 (1) (612 lumens).
• The CFL has 39 lumens per watt vs. 18 for the HEH. Thus, by conventional measures the CFL is more than twice as energy efficient.
• Measured illuminance tells a very different story: the CFL floodlight casts just 15 foot candles of light onto the work surface in this demonstration. The HEH? 51 foot candles.(2)
• Therefore, at 1.5 foot candles per watt, the HEH bulb is 60% more efficient in real terms than the CFL (0.9 foot candles per watt).
• Or viewed another way, using typical recessed downlight fixtures, to produce an equivalent amount of light on a kitchen countertop or table, where important tasks such as food preparation and schoolwork are performed, a 54 watt CFL floodlight would be needed.
• Not only would such a lamp be more expensive to purchase, it would cost 36% more to operate and generate 36% more air pollution than the high-efficiency halogen lamp.

Notes for Previous Example

1. A 40 watt model was dimmed by 15% to reduce lumen output from 720 to 612.

2. Measured distance of each light source to the surface of the light meter instrument was 50 inches.

Illuminating the Perks of Energy-Efficient Lighting

Impressive consumer value is sometimes found where it’s least expected. We’re all for selectively installing energy-efficient lighting around the home and place of business because it leverages the fact that the cheapest and cleanest kilowatt of electricity is the one that’s never produced in the first place. But if light bulb buyers only paid attention to the popular media or followed Energy Star prescriptions, they would only know to consider CFL reflectors as an affordable, energy-efficient lighting solution for their oft-used recessed downlights.

As we’ve argued here, the exciting new high-efficiency halogen lamps (spot and floodlights), which are generally priced on par with premium quality dimmable CFL reflectors, are superior energy-efficient lighting solutions for consumers who value great light characteristics, thrift, dimming performance and environmental sustainability for their lighting dollar.

About the Author

Peter Ellinwood is the founder and owner of GreenPoma, an online retailer of hard-to-find, best-in-breed, environmentally-friendly lighting options. During the 25 years he spent in the insurance industry in Boston, Baltimore, and Annapolis, he acquired an extensive background in product management and marketing, but decided to use this knowledge for a greater purpose – selling energy-efficient light bulb, LED, halogen, and CFL products along with great advice. To make a purchase or learn more about going green, please visit www.greenpoma.com.

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