0
First, you need know what's relevant parameters you want test such as Lumen, CCT, CRI, distribution intensity curve, IES file, EMC/EMI test and so on
Second, you should find suitable instruments to match your LED light, that can test these parameters
Third, you should know some relevant internation standards, such as CIE, IEC, IESNA, LM-79 Clause and LM-80 Clause.
If you interested in that, you can reference: http://blog.lisungroup.com
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoIf you are asking about an individual LED component, you need a series resister (typically 270 ohm to 1K) and a DC voltage source (typically 5V). Also the polarity must match (cathode negative, anode positive). If the LED was connected to the voltage without the series resistor you burned it out.
If you are asking about something else please clarify. There are LED flashlights, LED monitors/TVs, etc.
Add your answer:
Earn +20 pts
What does it mean LED?
LED: light emitting diode. It is a diode that emits light when current passes through it
Can led works as ac sources?
No. An LED (light emitting diode) allows current to flow in one direction, thus it cannot alternate as is implied by "an AC source". ANSWER: YES they can. Any diode can work with AC They can work from AC line directly. My overhead light in my kitchen are across 120 AC now for 8 years. But then again I know what I am doing
For what does LED lights stand for?
Light Emitting Diodes
What does the electronics term LED stand for?
It actually means Light Emitting Diode. I hoped i helped :)
How does a flashlight work?
A flashlight has a power source (usually ordinary batteries), a light source of some sort (a light bulb or LED, for example), and some electrical wiring to connect them, with a switch to turn it on and off. The power source makes the light source give off light.
Why does your left LED brake light not work at all and your right LED brake light work when taillights are on?
you need to repair the lights and they will both work and your taillights will work properly
What companies make led light bulbs?
Philips and GE are just some of the companies that make LED light bulbs.
Will a regular led light bulb work as a grow light?
Yes you can use it.
How does a continuous lighting led light work and how about falconeyes dv-405v led light?
It has a very powerful battery to stay light and bybreqular maintenance it will sta light. y
What is the function of a red LED?
Make red light.
How about a sentence with many hands make light work?
many makes the work easier - many hands make light work
How many lemons does it take to make a led light up?
6
What is wavelength of light emitting from LED?
It depends on the precise material used to make the LED. Different colors of LED emit different wavelengths.
Is a CD a light source?
no,it is not source of because if we put light on it then it will make eg.. lcd or led if swich on it make light sun, lighting,rainbow and firework
What is meant by the saying many hands make light work?
Most hands dispatchapace and make light work
Whose work led to the widespread use of electric or incadescent light?
Amara Doser
How does an led light bulb work?
LED's (Light Emitting Diodes) work on DC current, not AC, so the AC needs to be stepped down to an appropriate voltage via a transformer (probably only a few volts), converted to DC via a rectifier and filter (to smooth out the ripple current). there are a constant driver in side the 120V AC led light bulb , this driver transfer the AC to DC, so the led could work with DC.
