Led Spot
Led Spot
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 6W Power LED Recessed Ceiling Down Bulb Spot Warm Light Lamp Cabinet USA  US $2.01
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 9W E27 Warm White Energy Saving led Spot Lamp Lights Bulbs 110V 240V 44leds US $7.70
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The Application of Dimmable LED Spots and Bulbs
Among the issues of LED lights dimmability is one of the latest challenges still yet to be fully solved. Dimming LEDs is theoretically easy, because analogue dimming, that is the adjustment of current, has long been an option. However, this method only works safely when used with one LED bulb. Systems of LEDs require a more sophisticated method of dimming. The two basic forms of dimming are the PWM or Pulse-Width-Modulation and the analogue dimming, both of which are switched-mode regulators. These two types are similar in the sense that they both control the time-averaged current through the diode.
Analogue dimming is a very simple way of dimming, it is the adjustment of cycle-by-cycle of the LED current regulated with a potentiometer. The current is adjusted to the LED increasing and decreasing its intensity.
The disadvantage of analogue dimming is that it only works safe as long as we dim a single light bulb. Systems of LED lights require a more refined technique. The difficulty of dimming a system of LED lights is that there are many types of LEDs, requiring different methods for dimming. If there is a system of lights we would like to dim, the various LEDs may react diversely to the same amount of current, and as the current is reduced some LEDs can turn off later or sooner than others. Also, analogue dimming largely changes the colour of the light, similarly to when it is used with incandescent lights.
The most frequently used technique of dimming LEDs is Pulse-Width Modulation, which is basically the cutting of the phase at a certain frequency. PWM switches the devices between fully on and fully off at a frequency that cannot be told by the human eye, therefore LED bulbs always run on the forward current recommended. The frequency of switching determines the brightness of light, so the longer the lights are "on" the brighter the light will be. This is the same technique used in incandescent light dimmers as well, except that incandescent lights react to current more slowly, and therefore require a different frequency.
Two types of Pulse-With Modulation signals are used often with dimming light: the leading-edge and the trailing edge techniques. These two are different ways of cutting the phase, and result in separate dimming technologies. The most frequently used dimmers of LEDs use solely the leading-edge technology. Dimmers marked as R or RL are suitable for most dimmable LEDs, since they work with the leading edge technology and do not include electronic transformers. TRIAC drivers, or devices governed by the DMX and digital addressable lighting interface (DALI) protocols and, in the future, may include wireless (RF) as a control option, that is dimmers that turn or slide with a knob, all work with dimmable LEDs.
Alas leading edge technologies controlled with a touch or push button, are often powered by an electric transformer, excluding many dimmable LEDs.
The other type of phase-cutting technique is trailing edge technique, usually used in MOSFET or is not suitable for the majority of dimmable LEDs. One of the latest inventions appearing on the market is the RAIS lamp technology. RAIS lamps offer a higher degree of functionality and seem to work with all types of dimmers available on the market. However RAIS technology is still new, and its long-term effect on LEDs have not been fully tested. If they prove to be trustworthy their application both domestically and commercially, can turn out to be much safer and easier than previous dimmable LED lights'.
In the ever-evolving technologies of LED lights, dimmable LEDs are still to be developed to further compatibility and better performance. Since there is no general rule for what dimmer your LED might be suitable for, always check the technical details with the distributor. Application of LED lights with non-compatible dimmers might ruin the LEDs, and they are, at the moment, not the cheapest solution of lighting.
About the Author
LEDcentre.uk.com is a UK distributor of LED lights and lighting solutions. Their aim is to satisfy customers with providing quality products at a reasonable price, and good service. Dimmable lights have just become available on their site at: LEDcentre.uk.com
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American DJ Led Tri Spot $129.99 American DJ Led Tri Spot |
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Elation Design Spot LED 886830037351 $2124.99 Elation Design Spot LED 886830037351 |
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American DJ Vizi LED Spot $749.99 American DJ Vizi LED Spot |
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American Dj Led Tri Spot $129.99 American DJ Led Tri Spot |
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American Dj Vizi Led Spot $749.99 American DJ Vizi LED Spot |
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Elation Design Spot LED $2499.99 The Design Spot LED by Elation Professional features an LED light source with equal output to a 250W discharge. Total lumens output for this fixture is 1989 LUX / 185 FC at 5m at full and produces a 15° beam angle. The Design Spot LED has three selectable operating modes: sound activated, stand alone and DMX control mode. In DMX control mode the Color Tone 50 can be operated in two DMX channel modes: 3 and 7 channel mode. Control data input is via 3 pin or 5 pin DMX data first in and out connections. The Design Spot LED is designed for indoor use only and features long life LED technology with an estimated 50,000 hour LED lamp life. |
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Dually-LED Spot - Amber $104.99 3" X 3" LED is cradle mounted for easy mounting to tab or any other surface;All aluminum construction;Wire harness included; Amber color for dust and fog;Single Lamp, Spot Pattern |
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Dually-LED Spot Single $104.99 3" X 3" LED is cradle mounted for easy mounting to tab or any other surface; Single lamp, Spot Pattern. All aluminum construction;Wire harness included.. |
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Chauvet Q-Spot 260 LED - Moving Yoke Spot 886830242427 $749.99 Chauvet Q-Spot 260 LED - Moving Yoke Spot 886830242427 |
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Chauvet Q-Spot 260 LED - Moving Yoke Spot 886830251894 $500 Chauvet Q-Spot 260 LED - Moving Yoke Spot 886830251894 |
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Chauvet Q-Spot 260 LED - Moving Yoke Spot 886830252051 $500 Chauvet Q-Spot 260 LED - Moving Yoke Spot 886830252051 |
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Chauvet Q-Spot 260 LED - Moving Yoke Spot $599.99 Chauvet Q-Spot 260 LED - Moving Yoke Spot |
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Chauvet Intimidator Spot LED 150 moving head Spot Regular 886830365218 $339.99 Chauvet Intimidator Spot LED 150 moving head Spot Regular 886830365218 |
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Chauvet Intimidator Spot LED 150 moving head Spot $399.99 Chauvet Intimidator Spot LED 150 moving head Spot |
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Chauvet Q-Spot 260 Led - Moving Yoke Spot $599.99 Chauvet Q-Spot 260 LED - Moving Yoke Spot |
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Chauvet Q-Spot 260 Led - Moving Yoke Spot 886830252051 $500 Chauvet Q-Spot 260 LED - Moving Yoke Spot 886830252051 |
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Chauvet Intimidator Spot Led 150 Moving Head Spot $399.99 Chauvet Intimidator Spot LED 150 moving head Spot |
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4w mr16 led lamp/led spot lamp/led bulb $3.99 4w mr16 led lamp/led spot lamp/led bulb watt:4*1w voltage:12V lumen:360-400lm |
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Elation E Spot LED $1599.99 The E Spot LED by Elation Professional features razor sharp optics and flat beam field along with 8 dichroic colors and 7 rotating, indexing replaceable gobos. Additional features include 8 built-in programs accessed via DMX-controller or manually, minimal heat emission, maintenance free operation,° and preprogrammed colored macros. Control data input is via 3-pin or 5-pin DMX data first in and out cables. This unit is equipped with LED CBT-90W lamp providing up to 60,000 hours estimated lamp life. The E Spot LED is rated IP 20 and is ideal for indoor use only. The unit has a 15° beam angle and motorized focus. Rigging for this unit includes 2 x 1/4 turn Omega clamps, and 3-pin DMX safety cable. |
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Chauvet Q-SPOT 150 LED Lighting Fixture $429.99 Chauvet Q-SPOT 150 LED Lighting Fixture |
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Chauvet Q-Spot 150 Led Lighting Fixture $649.99 Chauvet Q-SPOT 150 LED Lighting Fixture |
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1W/5V Plastic LED spot light $2.39 Overview:Plastic Super LED spot Light with adjustable clipNew Style and convenience to read book with this spot lightAdjustable cilpSilver color shellPower by 3xAG13 included |
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Elation Design Spot Led $2499.99 The Design Spot LED by Elation Professional features an LED light source with equal output to a 250W discharge. Total lumens output for this fixture is 1989 LUX / 185 FC at 5m at full and produces a 15 beam angle.The Design Spot LED has three selectable operating modes: sound activated, stand alone and DMX control mode. In DMX control mode the Color Tone 50 can be operated in two DMX channel modes: 3 and 7 channel mode.Control data input is via 3 pin or 5 pin DMX data first in and out connections. The Design Spot LED is designed for indoor use only and features long life LED technology with an estimated 50,000 hour LED lamp life.9 Dichroic Colors14 GobosLED Lamp Source With Equal Output to 250W Discharge15 Beam AngleVariable Frost Filter (Hybrid Effect for Wash)ColorsColor wheel: 8 replaceable dichroic colors plus white, with two direction rainbow effectGobos14 GobosTwo gobo wheelsGobo wheel 1: 7 rotating / indexing replaceable gobosGobo wheel 2: 7 replaceable static gobos. 4 metal, 3 glass gobosGobo Size 26.9mm (outside dimensions) / 23mm (inside dimensions)Special Effects3 Facet Rotating / Indexing PrismVariable Frost Filter (Hybrid Effect for Wash)Motorized IrisShutter/DimmerVariable speed Shutter / StrobeStrobe effect with 0-18 flashes per secondMechanical Dimmer 0-100%Light Source1989 Lux / 185 fc at 16 feet / 5 meters at fullLED lamp source with equal output to 250W dischargeLamp life: 50,000 hours, 6500 K, CRI=70Lamp: CBM-360-W LED 90WattOptical System15 Beam AngleMotorized focusImproved optics and flat beam fieldMovementPan / Tilt 540/630 x 265Automatic Pan / Tilt correctionPan / Tilt locking systemControl16 Channels DMXLCD displayReversible display option, 180 flipUSITT DMX-512 Complaint16 prism macrosRDMX addressing8 built-in programs16 bit mode3 operation modes: DMX controlled, stand alone or sound activatedOperation ParametersMax ambient temperature: 45CIP Rating: IP20dB Rating: 55 dB at 3'Power SupplyUser selectable power supply (internal tap)Nearly 1/2 power consumption of standard DS250 PRO240W MAX / 120v-240V 50/60hzConnectors3-pin & 5-pin DMX connectionsApprovalsCE approved |
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1W LED Spot Light $49.99 SpecificationCategory: Flush Mount Lights Style: LED Suggested Space Fit: Hallway Materials: Aluminum Height: 0-12 in Width/Diameter: 0-12 in Power: 1W Bulb Base: LED 1 Bulb Included or Not: Bulb Included Input Voltage: 110-120V,220-240V Product Dimension(Inch): Phi;1.28 H0.9 Shipping Weight(kg): 0.15 |
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3W LED Spot Light $49.99 SpecificationCategory: Flush Mount Lights Style: LED Suggested Space Fit: Hallway Materials: Aluminum Height: 0-12 in Width/Diameter: 0-12 in Power: 3W Bulb Base: LED 1 Bulb Included or Not: Bulb Included Input Voltage: 110-120V,220-240V Product Dimension(Inch): Phi;1.34 H3.6 Shipping Weight(kg): 0.15 |
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Elation E Spot Led $1599.99 The E Spot LED by Elation Professional features razor sharp optics and flat beam field along with 8 dichroic colors and 7 rotating, indexing replaceable gobos.Additional features include 8 built-in programs accessed via DMX-controller or manually, minimal heat emission, maintenance free operation, and preprogrammed colored macros. Control data input is via 3-pin or 5-pin DMX data first in and out cables.This unit is equipped with LED CBT-90W lamp providing up to 60,000 hours estimated lamp life. The E Spot LED is rated IP 20 and is ideal for indoor use only.The unit has a 15 beam angle and motorized focus. Rigging for this unit includes 2 x 1/4 turn Omega clamps, and 3-pin DMX safety cable.Feature packed compact designRazor Sharp Optics and flat beam fieldLED Lamp Source with output greater than 150 DischargeNearly 1/2 Power Consumption of standard 150w fixture60,000 hour Solid State LED lamp source lifeSpecifications:8 Dichroic Colors7 Rotating/Indexing Replaceable Gobos3 Facet/3D and 5 Facet Rotating/Indexing Prisms15 Beam AngleMotorized FocusVariable speed Shutter/StrobeElectronic Dimmer 0-100%Pan/Tilt 540/630 x 265Power 180W Max/ 100v~240V50/60Hz14 Channels DMX3-pin & 5-pin DMX connections1330 LUX/124 FC at 16'/5M at full25 lb.8"L x 11.8"W x 17.2"HLamp: CBT-90W LED 45Watt (Color Temperature=6500K, CRI=70) |
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Green LED Spot Light Bulb $9.99 Cast a ghostly hue when you uplight your favorite Halloween decorations with this energy efficient and long-lasting green LED spot |
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Red Led Spot Light Bulb $9.99 Cast a bloody hue when you uplight your favorite Halloween decorations with this energy efficient and long-lasting red LED spot |
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9W LED Spot Light $64.99 SpecificationCategory: Flush Mount Lights Style: LED Suggested Space Fit: Hallway Materials: Aluminum, Acrylic Height: 0-12 in Width/Diameter: 0-12 in Power: 9W Bulb Base: LED 1 Bulb Included or Not: Bulb Included Input Voltage: 110-120V,220-240V Product Dimension(Inch): Phi;4.64 H2.28 Shipping Weight(kg): 0.3 |
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7W LED Spot Light $64.99 SpecificationCategory: Flush Mount Lights Style: LED Suggested Space Fit: Hallway Materials: Aluminum, Acrylic Height: 0-12 in Width/Diameter: 0-12 in Power: 7W Bulb Base: LED 1 Bulb Included or Not: Bulb Included Input Voltage: 110-120V,220-240V Product Dimension(Inch): Phi;4.4 H2.8 Shipping Weight(kg): 0.3 |
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2.5W LED Spot Light $49.99 SpecificationCategory: Flush Mount Lights Style: LED Suggested Space Fit: Hallway Materials: Aluminum Height: 0-12 in Width/Diameter: 0-12 in Power: 1 2.5W Bulb Base: LED 1 Bulb Included or Not: Bulb Included Input Voltage: 110-120V,220-240V Product Dimension(Inch): Phi;2.8 H2 Shipping Weight(kg): 0.2 |