Frequently Asked Questions (FAQ) for LED Down Light
LED is designed to focus its light and can be directed to a specific location without the use of an external reflector, achieving a higher application efficiency than conventional lighting. Well designed LED illumination systems are able to deliver light more efficiently to the desired location. Also, you can have your measurements known to the seller and they will be more than glad to do the slashing for you prior to sending the items. It comes in different brightness and it is actually defined by the number and size of LED present in the strips
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Controlling a normal florescent bulb using usb duplicate
Since this involves switching mains voltage, and Mains Voltage can kill, a beginner should not try to make one from scratch. Either go with a ready made commercial Usb Controlled Outlet, use a X-10 outlet designed for inductive loads with a X-10 Usb controller, or use a wireless remote controlled system that's used for outdoor lights (like they sell at christmas), with a USB GPIO module hacked to the remote control.Alternatively, use a Led light bulb, not a CFL/Florescent light. Much easier. Some can even be controlled by iphones/android
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Above cabinet LED light placement
This is a matter of personal preference, however that being said you should avoid direct line of sight with the strip. For example, if you can see the LED strip while walking down stairs then it would be better to adjust the strip as to avoid this if possible as they are pretty intense on the eyes. An easy to make wooden lighting rail that basically looks like a triangle would direct the light up on the wall which has a nice effect and also keeps the light away from the eyes.
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Led light strip flashing duplicate
it's not a connection issue, those don't get better over time. your driver is failing because the capacitors in it are drying out. this will get worse sooner than later. As the LED strip warms, it uses more current. To supply more current, the driver increases its output voltage. When the voltage increases, a cap of a given capacity stores more energy. When the voltage catches up with demand, the flickering stops. Note that higher voltages tend to heat the capacitors and cause them to age even faster; a run-away cycle you're in the early stages of
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Arduino's Serial Monitor Showing Constant Value
In your initialisation where you declare each variable and 'connecting' them to a pin you make a mistake. Now you say that senRead is a digital pin instead of a analog pin. Change the value to A0 so you will get int senRead A0;Also in your void Setup() you forget to declare your analog pin as an input. Add a pinMode command that sets senRead as an input. If this doesn't fix your problem then it is probably hardware related. Check the connections on your breadboard will most of the times solve alot of problems.
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how can money save a polar bear?
You should be suspicious when someone asks you for money to save polar bears. You could donate money to a reputable organization, like the World Wildlife Fund. If you want to save polar bears by stopping global warming, use alternatives for fossil fuels or use energy more efficiently. Use compact fluorescent lights or LED lights instead of carbon filament lights. Walk, cycle or take public transit, where possible, instead of driving. Install solar panels on your house. Write a letter to your regulatory agency and your power supplier in support of nuclear power.
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What's the difference between a Plasma-TV, LCD-TV and a LED-TV?
Plasma TVs are emissive devices. A gas is excited to radiate either red, green or blue at each screen pixel. LCDs (Liquid crystal displays) are transmissive devices. Each pixel is a variable transmission shutter whose transmission is varied by varying the electric field on it. A cold cathode fluorescent lamp is used as the backlight. LED (light emitting diode) TVs are identical to LCD TVs but use LEDs as the backlight. They typically use less power and allow greater control of the backlight intensity in different parts of the screen. They also allow a much thinner screen.
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can I buy one LED light for my Kenmore range?
Welcome to VVME LED light.LED is a kind of new light resource in replace of the traditional filament lamp,fluorescent lamp, high pressure sodium light and so on.It is much more energy saving,light,environmental,colorful,money saving than the lights with other kind of light resources.We Visonari targets to offer the right light for you and would like to share the happiness of using VVME LED lights with you. We have led flood light, spot light, strip light, corn light for home use,business or construction. We also offer you LED dj lights for entertainments.You will find what you need here
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How do those new flat LED street lights save energy ?
LED offer excellent visibility with color accuracy, they lose nothing when it comes to energy efficiency, In fact, they significantly outperform HPS lamps in this category. When comparing the two, energy-saving lights bulbs consume 40-80% less electricity than do standard HPS lamps. A 30W LED lamp approximates the light output of a 80W HPS. This feat of efficiency stems from the directionality of LEDs, which focus light downwards and spreads illumination evenly over a given area. As a result, one LED lamp requires significantly less wattage than does an HPS to illuminate the same area
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Does this RGB LED really need 220 ohm resistors per color?
In my experience, red will dominate when using the same resistor values with the same voltage applied to each pin (common cathode). This is because the RGB LEDs I have used (and the one you are using) have a 2V drop for red, and 3.2V drop for green and blue. PWM can compensate for that (as can a higher resistance value on the red pin), depending on how you program the duty cycle for each pin. They are probably telling you to use the same resistor value to make the project simpler and cheaper
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Bedtime for 12-13 year old girl
Let her go to bed a half hour later for a week and see how she acts. If she is harder to wake up in the morning, forgetful, cranky, etc, move it back to the usual time. If, however, everything remains the same, keep it going for a month and then make bedtime 10pm. Do this again, for a week and see how it goes. A week of too little sleep won't hurt her, and if she really doesn't need the sleep, lying in bed wide awake like that can cause insomnia later on
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Is this a good laptop?
my advice would be try and avoid lithium ion batteries as mine in my laptop have already burnt out after a month because its constatly plugged in and its got power managent software which is meant to incease battery life not decrrease it i know they last longer but ateast with the old ones they will last longer and wont burn out ive got a old hp laptop aswell thats about 8 years old and the battery in that still lasts for 5 hours and thats constantly on charge whats wrong with the good old fashioned batteries ay?
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How to turn off a light sensor LED light?
The white "screws", are knockout plugs. A knockout is simply a hole where conduit, cable, wire, or a device can attach/enter the box. A knockout plug, is used to fill unused knockouts.Here is a similar box cover with the knockouts unplugged.
This allows you to attach devices, like lamp holders and motion sensors.Any extra holes would be filled with a plug.You should be able to hire an Electrician to install a switch as you mention, but it would depend on if you have the legal right to (own vs. rent, etc.
).
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Why is everyone that is looking for LED lamps, also looking for China LED light manufacturers?
Why is everyone that is looking for LED lamps, also looking for China LED light manufacturers?They aren't.As somebody who uses A LOT of lighting equipment of every configuration, I recommend people source standard configuration LED lamps from the major manufacturers, such as Philips or GE, or perhaps Cree or TCP, or even Feit. If it's specialized configurations, find a manufacturer who will stand behind the product (ie: take it back if it blows out and replace/refund as appropriate).
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Efficiency of solar panel under warm-white LED light
You may find some other LED (cool white, or blue or even red) has a higher overall efficiency. And you probably need to arrange multiple LEDs for maximum evenness of illumination to avoid energy loss in the "shaded" part of the solar cell, and possibly reflectors to minimise spill outside the cell area.But once you factor in the LED's own efficiency, even the best cheap solar cells (currently about 22%, back contact cells like Sunpower Maxeon) won't give you 5%. Jonk's 1% may be realistic, but with care and experimentation you may be able to reach 2% or so
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Magnetic connector for LED light on tent mesh
I dont know of anything off the shelf that is a magnetic connector but there is a thing called a cable pass-through or cable gland that you could use to pierce the netting and pass your cable through while sealing it from insects. Go to an electricians shop and describe what youre up to. Alternatively if you dont mind ugly, you could hand stitch or glue a patch of camp mattress foam into the netting with a slit in it that would allow you to push your wire through while keeping out the bugs.
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Where can I find a linear mount LED light?
the present passing contained in the direction of the wires will reason the wires to warmth up if no longer adequate guage. think of of the thousands and thousands of little electrons pushing and shoving lower back and forth, all this action reasons friction on a molecular point and of direction all of us know friction equals warmth. In a larger guage twine there is extra area for the same style of electons. that is incredibly that easy. Use as heavy a guage speaker twine which you will. you will have no sign loss and little warmth
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King James Bible archaic style
The answer to your first question probably lies in the fact that the Old Testament is translated from Hebrew. Arabic frequently begins sentences with and. I wouldnt be surprised if the other main Semitic language did the same.
We might need a biblical scholar to answer your second question. It is, Id hazard, to do with the respect due to the Almighty, just as some people begin pronouns referring to God with a capital letter.(If you're interested in other linguistic aspects of the King James Bible, I recommend David Crystal's 'Begat'.
).
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What is the main advantage of LED light bulb ?
The future of household lighting will soon be the wide spread adoption and use of white energy efficient LED light bulbs. Though the present market for finished white LED products is geared mainly towards enthusiasts and early-adopters, the efficiency and cost effectiveness of LED lighting systems will drive demand for more affordable LED lights. Opto-electronics is an exciting area and we predict, that in the near future, white LED lighting applications will be powerful and cheap enough to replace incandescent lighting for everyday use in our homes, in street lights, outdoor signs, and offices.
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Best led or LCD tv for watching tv and gaming?
plasma is better due to it does NOT have motion blur that you get with SOME lcd tv's LED TV is a bit of a misnomer but as manufacturers and retailers continue to use the term, it makes it's way into the public conscience and is worth deliberating on the differences. LED televisions are really just LCD televisions that use LED lights for back lighting instead of the flourescent CFL lighting traditionally used for LCDs. Both employ the liquid crystal diode (LCD) technology front panel containing the twisting crystals which define LCD technology.
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Give me a real magicshine bike light wholesaler who can provide best magicshine bike light?
If you want to own your best magicshine bike light, you can come to Shenzhen MINJUN Electronic Co., Ltd.Shenzhen Magicshine is devoting itself into researching and producing, their magicshine bike light get wonderful magicshine bike light reviews from their customers. Here are some description about their products: magicshine bike light,with compact and stylish streamline design, uses CREE XM-L ultra bright LED and high efficiency orange peel reflector to provide super bright light; 4x18650 long lasting SAMSUNG Li-ion batteries to provide 5600 mAh capacity, and waterproof rubber pack to provide perfect protection, making your night adventure more enjoyable.
