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Custom LED Assembly manufacturing?

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What's the cheapest 3D LED TV right now?

Sony BRAVIA KDL32EX720 32-Inch 1080p 3D LED HDTV, Black was excellent for the usage that we bought it for. Although we have not played or seen 3D movies on it, the picture is excellent. We do not have a 3D channel here and I do not have a 3D player yet so I cannot test it. It arrive a day before the estimated delivery date and we were glad to have it as our other HDTV, that we replaced it with, had just quit. h

NUM-Lock LED state does not correspond with internal state after boot (15.04, 15.10)

I am not sure about this, and it's not really a way to fix it but a hint where the problem might be:Around the time when I additionally installed xubuntu-desktop, the buggy misbehaviour of the NUM-Lock LED stopped. Probably something that got reconfigured or replaced during that process fixed the problem...So please, as this is still a bug that must get fixed, go on confirming the bug report -netbox wrote and linked in his answer above. Thanks!.

can i connect an 1.2v LED bulb to a 1.5v D battery(in a battery holder)

You will need to wire in a resistor, also. or else it will discharge battery too fast, or fry LED. a 1500 ohm resistor (1/4 watt) should be about right. just wire your parts in a loop, from plus side of battery, to minus. if it does not light, reverse wiring

Arduino LED flashes with one button press

This is what you need. When you pressed the button then your LED turn ON. And it still ON until you pressed the button again.I hope it will help you

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the power consumption difference is negligible but the quality in picture is absolutely noticeable. opt for LED every time.

What are the relevant parameters for a reverse-biased LED light sensor?

LEDs do have reverse capacitance and this is a real problem for some applications. I determined experimentally that the reverse capacitance on some blue diodes (notably in UPS front panels) can be as high as 300pF and very voltage dependent so they can indeed be used as varicaps if light shielded. This can be a source for interference if it causes regulator or output stage instability.

Does putting in LED bulbs save on money?

Yes. It will save about 4/5 of your electricity bill compared to incandescent lighting. If you have CFL lighting the saving is pretty small but the light is better.For a high quality £10 bulb (60W equivalent) it pays for itself in saved electricity in around 3300 hours at £0. 15 per unit. That's around 18 months in a living room. Mine are now 4 years old with no failures, so well up on the deal. For a cheap £1 bulb, that's 330 hours or about 2 months. So even if those cheap crappy LED bulbs need replacing twice a year they are still saving you twice their cost in electricity.The only place it does not save in the long run is for very occasionally used lights such as in cupboards and lofts. And then, only if you never forget to turn these lights off!.

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I do not recommend surpassing rated amperage limits on computer hardware. Any device that pulls power from some other source, (PSU or Fan Header) does not count towards that limit. Those LED headers on the MB are usually only used for the strips. You have 4 strips and that should be fine. Just use a different power source for the other components

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A single transistor configured as a common emitter is enough to allow you to drive the LED from a Pi GPIO and using the Pi 5v line. Q1 can be any jellybean NPN part such as a 2N3904, 2N4401 etc.simulate this circuit - Schematic created using CircuitLab.

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Rather than replace the whole assembly, why not just replace the bulb? I have a website link for replacing the incandescent bulbs with LEDs. Expensive little buggers but they do last and last

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LEDs will last longer and the color will probably be a little clearer! Go for it! :)

Will a 110-220v to 12v converter work with a DC 12v 3w LED bulb? [closed]

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there are tons of places online you can order them from, just search “Black Light LED's“ I dont know any common stores that would carry them regularly...although I once bought a black light led flashlight from a ***** sporting goods store....it was by the fishing/outdoors stuff

If i have a pair of infared goggles and a flashlight with infrared LED'S ,could i see in the dark?

Yes you could see in the dark with that setup. Since your infrared goggles would 'see' the infrared light and convert it for you to see. Most infrared goggles that are sold these days have an infrared LED built into them that you can turn on. I hear they do not like to use these in the military though because other people with infrared goggles can see you emitting the infrared light.

Basic question about connecting LED to a breadboard?

In the second case the LED is shorted. All pins in that row are connected

Finding the correct resistor for my LED?

Most LEDs are spec would at 20mA, 30mA absolute maximum, so you need to decide how far over 20mA you are willing to go. Also, automotive systems typically run around 13.8V while the alternator is running, possibly reaching a maximum of 14.8V. You will see 12V when the battery is at rest for awhile. So frequently the resistor value used with 12V systems is 510 ohms. This will yield: 14.8V --> 23.3mA -->301mW 13.8V --> 21.4mA --> 254mW 12.0V --> 17.8mA --> 162mW I would select a 1/2 resistor (or parallel two 1K 1/4W resistors).

Are Blue LED Bumper Lights on an Acura Integra illegal in VA?

Visible blue lights are prohibited in all states except for emergency vehicles. Most cops in VA interpret add-on LED lights under the VA neon light laws, which require that they be turned off and covered at all times when the vehicle is operated on VA roads

Why is Mercedes-Benz stopping the daytime running LED light bars on some of their new models?

first it's not really “iconic“, MB did not start it, audi did, and LED strips are so cheap that anyone can go to a parts store and buy something similar and attach it to their car and get a *very* similar look. (it's not like HID lights when they first came out and were distinctive *and* expensive) MB will still have them, they are shaping them differently: on the next s-class they will go to that “angry eyebrow“ which audi started and it will be integrated into the headlight cluster as opposed to the outer bumper openings. (porsche is also another company which uses that same location, so MB is definitely not unique in that respect)

Do you think that turning an LED into a small laser would be essential for large-scale chip applications?

You can not "make an LED into a small laser". That's not how laser diodes are created. They do both rely on photo recombination but that's where the similarity ends.Right now we do not have any cogent or systematic ways to use light in current processors. It's still a matter of research but we are far away from engineering practice which comes long before commercial viability

Whats the wattage on my fish tanks LED lights?

LEDs arent measured in watts but rather in lumens, and i unfortunately dont have the answer of the amount of lumens. But now at least you can ask a new, more accurate question

HAVE WE BEEN BAMBOOZLED, HOODWINKED AND LED ASTRAY?

hey man, floyd is everywhere. news, radio, and the web. there blogs, forums, videos, pictures, and they are all about floyd. people are insulting, cursing, and eve making fun of mayweather. i love technology, CAUSE OF THE WEB. PEOPLE FROM EVERY CORNER OF THE WORLD NOW KNOW WHAT KIND OF PERSON MAYWEATHER REALLY IS. A COWARD HE MAKES A LOT OF EXCUSES AND GOT NO BALLS TO STAND UP! AND CRAZY THING ABOUT IT, ITS JUST BEEN A WEEK

Cheapest place to buy LED bulbs for cars?

Bought the LED bulbs from vanix.net , they have the new Plasma led bulbs which are 300% more powerful than the standard halogen bulbs, use them in my fogs very happy

I want to remove 3 LED's from a small circuit board. Need a bit of help

Just a touch of nail polish, preferably red, will completely cover the LEDs and since they do not produce heat there is no risk of overheating

How to lower voltage and amp for LED lights?

sizing a resistor requires precise information on LED current draw, and the voltage swing of the 12 volt source. this can be done without the resistor. connect pin 1 of a LM7805 to the “12 volt“ battery plus (must be DC) pin 2 to battery minus, pin 3 to cathode of silicon rectifier diode. the LM7805 will regulate the 12 volt source down to 5 volts precisely. the silicon diode (1n4004 for example) drops a half volt over a wide range of current draw, giving an output that is comparable to the 3 AAA batteries.

Are LED Tv's worth the money?

I agree with you. LEDs have their purposes, like if in bright rooms, or if you really want to keep power consumption down. But otherwise plasmas for large screen TVs just make much more sense. Their picture is stunning. They do not have motion blur or jaggies or whatever the hell you want to call them. They display dark scenes better, and they are quite a bit cheaper. I bought mine plasma 1 1/2 years ago, and it's a great display, but the ones out now are just fantastic for the money. Also, a little known fact, LCD screens damage much easier. My kid knocked out a bunch of pixels on or previous LCD screen by throwing a pacifier at it backhanded. I coulda killed him. But the Plasma that replaced it is even better.

Making a phantom powered power switch (not mute switch) with LED indicator

simulate this circuit - Schematic created using CircuitLabFigure 1. (a) What you want. (b) What you are considering using.You need a switch with two normally open (NO) contacts and one normally closed (NC).The switch you've chosen has only one contact and two terminals so I suspect that the LED common connection is through the body of the switch and requires mounting in a panel connected to negative. (That's usually easy on a car dashboard. )It is not suitable for your application. simulate this circuitFigure 2. The requirements can be met with a double-pole, double-throw, 2P2T, switch